Security Updates for Microsoft Exchange Server (March 2021) - Nessus

Critical   Plugin ID: 147003

This page contains detailed information about the Security Updates for Microsoft Exchange Server (March 2021) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents
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Plugin Overview

ID: 147003
Name: Security Updates for Microsoft Exchange Server (March 2021)
Filename: smb_nt_ms21_mar_exchange_oob.nasl
Vulnerability Published: 2021-03-02
This Plugin Published: 2021-03-03
Last Modification Time: 2022-04-04
Plugin Version: 1.13
Plugin Type: local
Plugin Family: Windows : Microsoft Bulletins
Dependencies: microsoft_exchange_installed.nbin, ms_bulletin_checks_possible.nasl
Required KB Items [?]: SMB/MS_Bulletin_Checks/Possible

Vulnerability Information

Severity: Critical
Vulnerability Published: 2021-03-02
Patch Published: 2021-03-02
CVE [?]: CVE-2021-26412, CVE-2021-26854, CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065, CVE-2021-27078
CPE [?]: cpe:/a:microsoft:exchange_server
Exploited by Malware: True
In the News: True

Synopsis

The Microsoft Exchange Server installed on the remote host is affected by multiple vulnerabilities.

Description

The Microsoft Exchange Server installed on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities:

- A remote code execution vulnerability. An attacker could exploit this to execute unauthorized arbitrary code. (CVE-2021-26412, CVE-2021-26854, CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065, CVE-2021-27078)

Solution

Microsoft has released the following security updates to address this issue: -KB5000871

Public Exploits

Target Network Port(s): 139, 445
Target Asset(s): Host/patch_management_checks
Exploit Available: True (Metasploit Framework, Exploit-DB, GitHub)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the Security Updates for Microsoft Exchange Server (March 2021) vulnerability:

  1. Metasploit: exploit/windows/http/exchange_proxylogon_rce
    [Microsoft Exchange ProxyLogon RCE]
  2. Metasploit: auxiliary/gather/exchange_proxylogon_collector
    [Microsoft Exchange ProxyLogon Collector]
  3. Metasploit: auxiliary/scanner/http/exchange_proxylogon
    [Microsoft Exchange ProxyLogon Scanner]
  4. Exploit-DB: exploits/windows/webapps/49879.py
    [EDB-49879: Microsoft Exchange 2019 - Unauthenticated Email Download]
  5. Exploit-DB: exploits/windows/webapps/49895.rb
    [EDB-49895: Microsoft Exchange 2019 - Unauthenticated Email Download (Metasploit)]
  6. GitHub: https://github.com/vehemont/nvdlib
    [CVE-2021-26412]
  7. GitHub: https://github.com/vehemont/nvdlib
    [CVE-2021-26854]
  8. GitHub: https://github.com/0ps/pocassistdb
    [CVE-2021-26855]
  9. GitHub: https://github.com/0xmahmoudJo0/Check_Emails_For_CVE_2021_26855
    [CVE-2021-26855]
  10. GitHub: https://github.com/00011100/HAFHunt
    [CVE-2021-26855]
  11. GitHub: https://github.com/Ahsanzia/Exchange-Exploit
    [CVE-2021-26855]
  12. GitHub: https://github.com/Astrogeorgeonethree/Starred
    [CVE-2021-26855]
  13. GitHub: https://github.com/Dutch-Technology-eXperts/CSIRT
    [CVE-2021-26855]
  14. GitHub: https://github.com/EdgeSecurityTeam/Vulnerability
    [CVE-2021-26855]
  15. GitHub: https://github.com/FDlucifer/Proxy-Attackchain
    [CVE-2021-26855]
  16. GitHub: https://github.com/FDlucifer/firece-fish
    [CVE-2021-26855]
  17. GitHub: https://github.com/H0j3n/EzpzCheatSheet
    [CVE-2021-26855]
  18. GitHub: https://github.com/JERRY5410/HOMEWORK-FOR-ProxyLogon
    [CVE-2021-26855]
  19. GitHub: https://github.com/LearnGolang/LearnGolang
    [CVE-2021-26855]
  20. GitHub: https://github.com/Mr-xn/CVE-2021-26855-d
    [CVE-2021-26855]
  21. GitHub: https://github.com/Mr-xn/Penetration_Testing_POC
    [CVE-2021-26855]
  22. GitHub: https://github.com/NTUTtopicBryan/NTUT_HomeWork
    [CVE-2021-26855]
  23. GitHub: https://github.com/NarbehJackson/python-flask-ssrfpdf-to-lfi
    [CVE-2021-26855]
  24. GitHub: https://github.com/PwCNO-CTO/CVE-2021-26855
    [CVE-2021-26855: Microsoft Exchange Server Remote Code Execution Vulnerability (ProxyLogon)]
  25. GitHub: https://github.com/Seeps/shellcollector
    [CVE-2021-26855]
  26. GitHub: https://github.com/SexyBeast233/SecBooks
    [CVE-2021-26855]
  27. GitHub: https://github.com/SotirisKar/CVE-2021-26855
    [CVE-2021-26855]
  28. GitHub: https://github.com/SpearTip-Cyber-Counterintelligence/Zirconium
    [CVE-2021-26855]
  29. GitHub: https://github.com/Udyz/Proxylogon
    [CVE-2021-26855]
  30. GitHub: https://github.com/WiredPulse/Invoke-HAFNIUMCheck.ps1
    [CVE-2021-26855]
  31. GitHub: https://github.com/achabahe/CVE-2021-26855
    [CVE-2021-26855]
  32. GitHub: https://github.com/alt3kx/CVE-2021-26855_PoC
    [CVE-2021-26855]
  33. GitHub: https://github.com/andyinmatrix/PowerShell
    [CVE-2021-26855]
  34. GitHub: https://github.com/avi8892/CVE-2021-26856
    [CVE-2021-26855]
  35. GitHub: https://github.com/bhassani/Recent-CVE
    [CVE-2021-26855]
  36. GitHub: https://github.com/binganao/vulns-2022
    [CVE-2021-26855]
  37. GitHub: https://github.com/boson87225/111
    [CVE-2021-26855]
  38. GitHub: https://github.com/certat/exchange-scans
    [CVE-2021-26855]
  39. GitHub: https://github.com/cyware-labs/Operation-Exchange-Marauder
    [CVE-2021-26855]
  40. GitHub: https://github.com/doris0213/Proxy-Logon
    [CVE-2021-26855]
  41. GitHub: https://github.com/h4x0r-dz/CVE-2021-26855
    [CVE-2021-26855]
  42. GitHub: https://github.com/helsecert/2021-march-exchange
    [CVE-2021-26855]
  43. GitHub: https://github.com/herwonowr/exprolog
    [CVE-2021-26855]
  44. GitHub: https://github.com/hosch3n/ProxyLogon
    [CVE-2021-26855: CVE-2021-26855 & CVE-2021-27065]
  45. GitHub: https://github.com/inpalmer/MSE-Exchange-Alert-Check
    [CVE-2021-26855: Verify Vulnerability CVE-2021-26855]
  46. GitHub: https://github.com/itscio/LadonGo
    [CVE-2021-26855]
  47. GitHub: https://github.com/jweny/pocassistdb
    [CVE-2021-26855]
  48. GitHub: https://github.com/k8gege/LadonGo
    [CVE-2021-26855]
  49. GitHub: https://github.com/lovechinacoco/https-github.com-mai-lang-chai-Middleware-Vulnerability-detection
    [CVE-2021-26855]
  50. GitHub: https://github.com/mysticwayfarer1/Exchange-HAFNIUM
    [CVE-2021-26855]
  51. GitHub: https://github.com/netlas-io/MsExchangeServerVersionCheck
    [CVE-2021-26855]
  52. GitHub: https://github.com/password520/LadonGo
    [CVE-2021-26855]
  53. GitHub: https://github.com/r0eXpeR/redteam_vul
    [CVE-2021-26855]
  54. GitHub: https://github.com/r0eXpeR/supplier
    [CVE-2021-26855]
  55. GitHub: https://github.com/raheel0x01/eeb927d1189ad44742095f58636483984bfbfa355f69f94439e276df306d9568
    [CVE-2021-26855: CVE-2021-26855, also known as Proxylogon, is a server-side request forgery (SSRF) ...]
  56. GitHub: https://github.com/saucer-man/exploit
    [CVE-2021-26855]
  57. GitHub: https://github.com/seanjosee/NTUT_HOMEWORK
    [CVE-2021-26855]
  58. GitHub: https://github.com/shacojx/CVE-2021-26855-exploit-Exchange
    [CVE-2021-26855]
  59. GitHub: https://github.com/shacojx/CVE_2021_26855_SSRF
    [CVE-2021-26855]
  60. GitHub: https://github.com/shacojx/Scan-Vuln-CVE-2021-26855
    [CVE-2021-26855]
  61. GitHub: https://github.com/vehemont/nvdlib
    [CVE-2021-26855]
  62. GitHub: https://github.com/zhzyker/vulmap
    [CVE-2021-26855]
  63. GitHub: https://github.com/00011100/HAFHunt
    [CVE-2021-26857]
  64. GitHub: https://github.com/Ahsanzia/Exchange-Exploit
    [CVE-2021-26857]
  65. GitHub: https://github.com/Astrogeorgeonethree/Starred
    [CVE-2021-26857]
  66. GitHub: https://github.com/Mr-xn/Penetration_Testing_POC
    [CVE-2021-26857]
  67. GitHub: https://github.com/NTUTtopicBryan/NTUT_HomeWork
    [CVE-2021-26857]
  68. GitHub: https://github.com/Seeps/shellcollector
    [CVE-2021-26857]
  69. GitHub: https://github.com/SpearTip-Cyber-Counterintelligence/Zirconium
    [CVE-2021-26857]
  70. GitHub: https://github.com/WiredPulse/Invoke-HAFNIUMCheck.ps1
    [CVE-2021-26857]
  71. GitHub: https://github.com/bhassani/Recent-CVE
    [CVE-2021-26857]
  72. GitHub: https://github.com/cyware-labs/Operation-Exchange-Marauder
    [CVE-2021-26857]
  73. GitHub: https://github.com/doris0213/Proxy-Logon
    [CVE-2021-26857]
  74. GitHub: https://github.com/herwonowr/exprolog
    [CVE-2021-26857]
  75. GitHub: https://github.com/mysticwayfarer1/Exchange-HAFNIUM
    [CVE-2021-26857]
  76. GitHub: https://github.com/netlas-io/MsExchangeServerVersionCheck
    [CVE-2021-26857]
  77. GitHub: https://github.com/vehemont/nvdlib
    [CVE-2021-26857]
  78. GitHub: https://github.com/00011100/HAFHunt
    [CVE-2021-26858]
  79. GitHub: https://github.com/Ahsanzia/Exchange-Exploit
    [CVE-2021-26858]
  80. GitHub: https://github.com/Astrogeorgeonethree/Starred
    [CVE-2021-26858]
  81. GitHub: https://github.com/Mr-xn/Penetration_Testing_POC
    [CVE-2021-26858]
  82. GitHub: https://github.com/NTUTtopicBryan/NTUT_HomeWork
    [CVE-2021-26858]
  83. GitHub: https://github.com/Securonix/sigma2snypr
    [CVE-2021-26858]
  84. GitHub: https://github.com/Seeps/shellcollector
    [CVE-2021-26858]
  85. GitHub: https://github.com/bhassani/Recent-CVE
    [CVE-2021-26858]
  86. GitHub: https://github.com/cyware-labs/Operation-Exchange-Marauder
    [CVE-2021-26858]
  87. GitHub: https://github.com/doris0213/Proxy-Logon
    [CVE-2021-26858]
  88. GitHub: https://github.com/herwonowr/exprolog
    [CVE-2021-26858]
  89. GitHub: https://github.com/mysticwayfarer1/Exchange-HAFNIUM
    [CVE-2021-26858]
  90. GitHub: https://github.com/netlas-io/MsExchangeServerVersionCheck
    [CVE-2021-26858]
  91. GitHub: https://github.com/vehemont/nvdlib
    [CVE-2021-26858]
  92. GitHub: https://github.com/00011100/HAFHunt
    [CVE-2021-27065]
  93. GitHub: https://github.com/Ahsanzia/Exchange-Exploit
    [CVE-2021-27065]
  94. GitHub: https://github.com/Astrogeorgeonethree/Starred
    [CVE-2021-27065]
  95. GitHub: https://github.com/FDlucifer/Proxy-Attackchain
    [CVE-2021-27065]
  96. GitHub: https://github.com/Mr-xn/Penetration_Testing_POC
    [CVE-2021-27065]
  97. GitHub: https://github.com/NTUTtopicBryan/NTUT_HomeWork
    [CVE-2021-27065]
  98. GitHub: https://github.com/Seeps/shellcollector
    [CVE-2021-27065]
  99. GitHub: https://github.com/SexyBeast233/SecBooks
    [CVE-2021-27065]
  100. GitHub: https://github.com/Udyz/Proxylogon
    [CVE-2021-27065]
  101. GitHub: https://github.com/ZephrFish/Exch-CVE-2021-26855
    [CVE-2021-27065]
  102. GitHub: https://github.com/bhassani/Recent-CVE
    [CVE-2021-27065]
  103. GitHub: https://github.com/boson87225/111
    [CVE-2021-27065]
  104. GitHub: https://github.com/charlottelatest/CVE-2021-26855
    [CVE-2021-27065]
  105. GitHub: https://github.com/cyware-labs/Operation-Exchange-Marauder
    [CVE-2021-27065]
  106. GitHub: https://github.com/doris0213/Proxy-Logon
    [CVE-2021-27065]
  107. GitHub: https://github.com/dwisiswant0/proxylogscan
    [CVE-2021-27065]
  108. GitHub: https://github.com/evilashz/ExchangeSSRFtoRCEExploit
    [CVE-2021-27065]
  109. GitHub: https://github.com/gobysec/Goby
    [CVE-2021-27065]
  110. GitHub: https://github.com/h4x0r-dz/CVE-2021-26855
    [CVE-2021-27065]
  111. GitHub: https://github.com/helsecert/2021-march-exchange
    [CVE-2021-27065]
  112. GitHub: https://github.com/herwonowr/exprolog
    [CVE-2021-27065]
  113. GitHub: https://github.com/hosch3n/ProxyLogon
    [CVE-2021-27065: CVE-2021-26855 & CVE-2021-27065]
  114. GitHub: https://github.com/hosch3n/ProxyVulns
    [CVE-2021-27065]
  115. GitHub: https://github.com/l3shyyy/ProxyLogon-Useful-PowershellScripts
    [CVE-2021-27065]
  116. GitHub: https://github.com/mysticwayfarer1/Exchange-HAFNIUM
    [CVE-2021-27065]
  117. GitHub: https://github.com/netlas-io/MsExchangeServerVersionCheck
    [CVE-2021-27065]
  118. GitHub: https://github.com/r0ckysec/CVE-2021-26855_Exchange
    [CVE-2021-27065]
  119. GitHub: https://github.com/raheel0x01/CVE-2021-26855
    [CVE-2021-27065]
  120. GitHub: https://github.com/raheel0x01/eeb927d1189ad44742095f58636483984bfbfa355f69f94439e276df306d9568
    [CVE-2021-27065: CVE-2021-26855, also known as Proxylogon, is a server-side request forgery (SSRF) ...]
  121. GitHub: https://github.com/seanjosee/NTUT_HOMEWORK
    [CVE-2021-27065]
  122. GitHub: https://github.com/srvaccount/CVE-2021-26855-PoC
    [CVE-2021-27065]
  123. GitHub: https://github.com/vehemont/nvdlib
    [CVE-2021-27065]
  124. GitHub: https://github.com/zhzyker/vulmap
    [CVE-2021-27065]
  125. GitHub: https://github.com/vehemont/nvdlib
    [CVE-2021-27078]
  126. GitHub: https://github.com/0xAbdullah/CVE-2021-26855
    [CVE-2021-26855: PoC for CVE-2021-26855 -Just a checker-]
  127. GitHub: https://github.com/cert-lv/exchange_webshell_detection
    [CVE-2021-26855: Detect webshells dropped on Microsoft Exchange servers exploited through ...]
  128. GitHub: https://github.com/charlottelatest/CVE-2021-26855
    [CVE-2021-26855: CVE-2021-26855 exp]
  129. GitHub: https://github.com/conjojo/Microsoft_Exchange_Server_SSRF_CVE-2021-26855
    [CVE-2021-26855: Microsoft Exchange Server SSRF漏洞(CVE-2021-26855)]
  130. GitHub: https://github.com/cryptolakk/ProxyLogon-Mass-RCE
    [CVE-2021-26855: Python for mass deploying payload on Microsoft Exchange Servers affected by ...]
  131. GitHub: https://github.com/DCScoder/Exchange_IOC_Hunter
    [CVE-2021-26855: CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065]
  132. GitHub: https://github.com/dwisiswant0/proxylogscan
    [CVE-2021-26855: A fast tool to mass scan for a vulnerability on Microsoft Exchange Server that ...]
  133. GitHub: https://github.com/evilashz/ExchangeSSRFtoRCEExploit
    [CVE-2021-26855: CVE-2021-26855 & CVE-2021-27065]
  134. GitHub: https://github.com/Flangvik/SharpProxyLogon
    [CVE-2021-26855: C# POC for CVE-2021-26855 aka ProxyLogon, supports the classically semi-interactive ...]
  135. GitHub: https://github.com/hackerschoice/CVE-2021-26855
    [CVE-2021-26855: PoC of proxylogon chain SSRF(CVE-2021-26855) to write file by testanull, censored by ...]
  136. GitHub: https://github.com/hosch3n/ProxyVulns
    [CVE-2021-26855: [ProxyLogon] CVE-2021-26855 & CVE-2021-27065 Fixed RawIdentity Bug Exploit. ...]
  137. GitHub: https://github.com/Immersive-Labs-Sec/ProxyLogon
    [CVE-2021-26855: Chaining CVE-2021-26855 and CVE-2021-26857 to exploit Microsoft Exchange]
  138. GitHub: https://github.com/KotSec/CVE-2021-26855-Scanner
    [CVE-2021-26855: Scanner and PoC for CVE-2021-26855]
  139. GitHub: https://github.com/mauricelambert/ExchangeWeaknessTest
    [CVE-2021-26855: This script test the CVE-2021-26855 vulnerability on Exchange Server.]
  140. GitHub: https://github.com/mekhalleh/exchange_proxylogon
    [CVE-2021-26855: Module pack for #ProxyLogon (part. of my contribute for Metasploit-Framework) ...]
  141. GitHub: https://github.com/mil1200/ProxyLogon-CVE-2021-26855
    [CVE-2021-26855: RCE exploit for ProxyLogon vulnerability in Microsoft Exchange]
  142. GitHub: https://github.com/Nick-Yin12/106362522
    [CVE-2021-26855: 針對近期微軟公布修補遭駭客攻擊的Exchange ...]
  143. GitHub: https://github.com/p0wershe11/ProxyLogon
    [CVE-2021-26855: ProxyLogon(CVE-2021-26855+CVE-2021-27065) Exchange Server RCE(SSRF->GetWebShell)]
  144. GitHub: https://github.com/praetorian-inc/proxylogon-exploit
    [CVE-2021-26855: Proof-of-concept exploit for CVE-2021-26855 and CVE-2021-27065. Unauthenticated RCE ...]
  145. GitHub: https://github.com/pussycat0x/CVE-2021-26855-SSRF
    [CVE-2021-26855: This script helps to identify CVE-2021-26855 ssrf Poc]
  146. GitHub: https://github.com/r0ckysec/CVE-2021-26855_Exchange
    [CVE-2021-26855: Microsoft Exchange Proxylogon Exploit Chain EXP分析]
  147. GitHub: https://github.com/raheel0x01/CVE-2021-26855
    [CVE-2021-26855: CVE-2021-26855, also known as Proxylogon, is a server-side request forgery (SSRF) ...]
  148. GitHub: https://github.com/RickGeex/ProxyLogon
    [CVE-2021-26855: ProxyLogon is the formally generic name for CVE-2021-26855, a vulnerability on ...]
  149. GitHub: https://github.com/SCS-Labs/HAFNIUM-Microsoft-Exchange-0day
    [CVE-2021-26855: CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065]
  150. GitHub: https://github.com/sgnls/exchange-0days-202103
    [CVE-2021-26855: IoC determination for exploitation of CVE-2021-26855, CVE-2021-26857, CVE-2021-26858 ...]
  151. GitHub: https://github.com/soteria-security/HAFNIUM-IOC
    [CVE-2021-26855: A PowerShell script to identify indicators of exploitation of CVE-2021-26855, ...]
  152. GitHub: https://github.com/srvaccount/CVE-2021-26855-PoC
    [CVE-2021-26855: PoC exploit code for CVE-2021-26855]
  153. GitHub: https://github.com/stressboi/hafnium-exchange-splunk-csvs
    [CVE-2021-26855: IOCs found exploiting CVE-2021-26855 thanks to info from Volexity and MS and ...]
  154. GitHub: https://github.com/TaroballzChen/ProxyLogon-CVE-2021-26855-metasploit
    [CVE-2021-26855: CVE-2021-26855 proxyLogon metasploit exploit script]
  155. GitHub: https://github.com/Th3eCrow/CVE-2021-26855-SSRF-Exchange
    [CVE-2021-26855: CVE-2021-26855 SSRF Exchange Server]
  156. GitHub: https://github.com/thau0x01/poc_proxylogon
    [CVE-2021-26855: Microsoft Exchange ProxyLogon PoC (CVE-2021-26855)]
  157. GitHub: https://github.com/yaoxiaoangry3/Flangvik
    [CVE-2021-26855: C# POC for CVE-2021-26855 aka ProxyLogon, supports the classically semi-interactive ...]
  158. GitHub: https://github.com/Yt1g3r/CVE-2021-26855_SSRF
    [CVE-2021-26855: POC of CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, and CVE-2021-26865, ...]
  159. GitHub: https://github.com/ZephrFish/Exch-CVE-2021-26855
    [CVE-2021-26855: CVE-2021-26855: PoC (Not a HoneyPoC for once!)]
  160. GitHub: https://github.com/cert-lv/exchange_webshell_detection
    [CVE-2021-26857: Detect webshells dropped on Microsoft Exchange servers exploited through ...]
  161. GitHub: https://github.com/cryptolakk/ProxyLogon-Mass-RCE
    [CVE-2021-26857: Python for mass deploying payload on Microsoft Exchange Servers affected by ...]
  162. GitHub: https://github.com/DCScoder/Exchange_IOC_Hunter
    [CVE-2021-26857: CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065]
  163. GitHub: https://github.com/Immersive-Labs-Sec/ProxyLogon
    [CVE-2021-26857: Chaining CVE-2021-26855 and CVE-2021-26857 to exploit Microsoft Exchange]
  164. GitHub: https://github.com/SCS-Labs/HAFNIUM-Microsoft-Exchange-0day
    [CVE-2021-26857: CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065]
  165. GitHub: https://github.com/sgnls/exchange-0days-202103
    [CVE-2021-26857: IoC determination for exploitation of CVE-2021-26855, CVE-2021-26857, CVE-2021-26858 ...]
  166. GitHub: https://github.com/soteria-security/HAFNIUM-IOC
    [CVE-2021-26857: A PowerShell script to identify indicators of exploitation of CVE-2021-26855, ...]
  167. GitHub: https://github.com/Yt1g3r/CVE-2021-26855_SSRF
    [CVE-2021-26857: POC of CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, and CVE-2021-26865, ...]
  168. GitHub: https://github.com/cert-lv/exchange_webshell_detection
    [CVE-2021-26858: Detect webshells dropped on Microsoft Exchange servers exploited through ...]
  169. GitHub: https://github.com/DCScoder/Exchange_IOC_Hunter
    [CVE-2021-26858: CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065]
  170. GitHub: https://github.com/SCS-Labs/HAFNIUM-Microsoft-Exchange-0day
    [CVE-2021-26858: CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065]
  171. GitHub: https://github.com/sgnls/exchange-0days-202103
    [CVE-2021-26858: IoC determination for exploitation of CVE-2021-26855, CVE-2021-26857, CVE-2021-26858 ...]
  172. GitHub: https://github.com/soteria-security/HAFNIUM-IOC
    [CVE-2021-26858: A PowerShell script to identify indicators of exploitation of CVE-2021-26855, ...]
  173. GitHub: https://github.com/Yt1g3r/CVE-2021-26855_SSRF
    [CVE-2021-26858: POC of CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, and CVE-2021-26865, ...]
  174. GitHub: https://github.com/adamrpostjr/cve-2021-27065
    [CVE-2021-27065: Quick One Line Powershell scripts to detect for webshells, possible zips, and logs. ...]
  175. GitHub: https://github.com/cert-lv/exchange_webshell_detection
    [CVE-2021-27065: Detect webshells dropped on Microsoft Exchange servers exploited through ...]
  176. GitHub: https://github.com/cryptolakk/ProxyLogon-Mass-RCE
    [CVE-2021-27065: Python for mass deploying payload on Microsoft Exchange Servers affected by ...]
  177. GitHub: https://github.com/DCScoder/Exchange_IOC_Hunter
    [CVE-2021-27065: CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065]
  178. GitHub: https://github.com/hictf/CVE-2021-26855-CVE-2021-27065
    [CVE-2021-27065: analytics ProxyLogo Mail exchange RCE]
  179. GitHub: https://github.com/mekhalleh/exchange_proxylogon
    [CVE-2021-27065: Module pack for #ProxyLogon (part. of my contribute for Metasploit-Framework) ...]
  180. GitHub: https://github.com/Nick-Yin12/106362522
    [CVE-2021-27065: 針對近期微軟公布修補遭駭客攻擊的Exchange ...]
  181. GitHub: https://github.com/p0wershe11/ProxyLogon
    [CVE-2021-27065: ProxyLogon(CVE-2021-26855+CVE-2021-27065) Exchange Server RCE(SSRF->GetWebShell)]
  182. GitHub: https://github.com/praetorian-inc/proxylogon-exploit
    [CVE-2021-27065: Proof-of-concept exploit for CVE-2021-26855 and CVE-2021-27065. Unauthenticated RCE ...]
  183. GitHub: https://github.com/RickGeex/ProxyLogon
    [CVE-2021-27065: ProxyLogon is the formally generic name for CVE-2021-26855, a vulnerability on ...]
  184. GitHub: https://github.com/SCS-Labs/HAFNIUM-Microsoft-Exchange-0day
    [CVE-2021-27065: CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065]
  185. GitHub: https://github.com/sgnls/exchange-0days-202103
    [CVE-2021-27065: IoC determination for exploitation of CVE-2021-26855, CVE-2021-26857, CVE-2021-26858 ...]
  186. GitHub: https://github.com/hictf/CVE-2021-26855-CVE-2021-27065
    [CVE-2021-26855: Analytics ProxyLogo Mail exchange RCE]
  187. GitHub: https://github.com/sirpedrotavares/Proxylogon-exploit
    [CVE-2021-26857: Proxylogon exploit - CVE-2021-26857]
  188. GitHub: https://github.com/hakivvi/proxylogon
    [CVE-2021-26855: My exploit for the proxylogon chain (Microsoft Exchange Server - CVE-2021-26855)]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS Score Source [?]: CVE-2021-26855
CVSS V2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:H/RL:OF/RC:C
CVSS Base Score:7.5 (High)
Impact Subscore:6.4
Exploitability Subscore:10.0
CVSS Temporal Score:6.5 (Medium)
CVSS Environmental Score:NA (None)
Modified Impact Subscore:NA
Overall CVSS Score:6.5 (Medium)
CVSS V3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C
CVSS Base Score:9.8 (Critical)
Impact Subscore:5.9
Exploitability Subscore:3.9
CVSS Temporal Score:9.4 (Critical)
CVSS Environmental Score:NA (None)
Modified Impact Subscore:NA
Overall CVSS Score:9.4 (Critical)
STIG Severity [?]: I
STIG Risk Rating: High

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Plugin Source

This is the smb_nt_ms21_mar_exchange_oob.nasl nessus plugin source code. This script is Copyright (C) 2021-2022 and is owned by Tenable, Inc. or an Affiliate thereof. 

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##
# The descriptive text and package checks in this plugin were
# extracted from the Microsoft Security Updates API. The text
# itself is copyright (C) Microsoft Corporation.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(147003);
  script_version("1.13");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/04");

  script_cve_id(
    "CVE-2021-26412",
    "CVE-2021-26854",
    "CVE-2021-26855",
    "CVE-2021-26857",
    "CVE-2021-26858",
    "CVE-2021-27065",
    "CVE-2021-27078"
  );
  script_xref(name:"MSKB", value:"5000871");
  script_xref(name:"MSFT", value:"MS21-5000871");
  script_xref(name:"IAVA", value:"2021-A-0111-S");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2021/04/16");
  script_xref(name:"CISA-NCAS", value:"AA22-011A");

  script_name(english:"Security Updates for Microsoft Exchange Server (March 2021)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Exchange Server installed on the remote host is affected by
multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Exchange Server installed on the remote host
is missing security updates. It is, therefore, affected by
multiple vulnerabilities:

  - A remote code execution vulnerability. An attacker could exploit this to
  execute unauthorized arbitrary code. (CVE-2021-26412, CVE-2021-26854,
  CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065,
  CVE-2021-27078)");
  # https://support.microsoft.com/en-us/topic/description-of-the-security-update-for-microsoft-exchange-server-2019-2016-and-2013-march-2-2021-kb5000871-9800a6bb-0a21-4ee7-b9da-fa85b3e1d23b
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?14b26c05");
  # https://msrc-blog.microsoft.com/2021/03/02/multiple-security-updates-released-for-exchange-server/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?fedb98e4");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:
  -KB5000871");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-26855");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Microsoft Exchange ProxyLogon RCE');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"in_the_news", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/03/02");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/03/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/03/03");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:exchange_server");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows : Microsoft Bulletins");

  script_copyright(english:"This script is Copyright (C) 2021-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ms_bulletin_checks_possible.nasl", "microsoft_exchange_installed.nbin");
  script_require_keys("SMB/MS_Bulletin_Checks/Possible");
  script_require_ports(139, 445, "Host/patch_management_checks");

  exit(0);
}

include('vcf_extras_microsoft.inc');

var app_info = vcf::microsoft::exchange::get_app_info();

var constraints =
[
  {
    'product' : '2013',
    'unsupported_cu' : 22,
    'cu' : 23,
    'min_version': '15.00.1497.0',
    'fixed_version': '15.00.1497.12',
    'kb': '5000871'
  },
  {
     'product' : '2016',
     'unsupported_cu' : 13,
     'cu' : 14,
     'min_version': '15.01.1847.0',
     'fixed_version': '15.01.1847.12',
     'kb': '5000871'
  },
  {
     'product': '2016',
     'unsupported_cu': 13,
     'cu' : 15,
     'min_version': '15.01.1913.0',
     'fixed_version': '15.01.1913.12',
     'kb': '5000871'
  },
  {
     'product' : '2016',
     'unsupported_cu' : 13,
     'cu' : 16,
     'min_version': '15.01.1979.0',
     'fixed_version': '15.01.1979.8',
     'kb': '5000871'
  },
  {
      'product': '2016',
      'unsupported_cu': 13,
      'cu' : 18,
      'min_version': '15.01.2106.0',
      'fixed_version': '15.01.2106.13',
      'kb': '5000871'
  },
  {
    'product' : '2016',
    'unsupported_cu' : 13,
    'cu' : 19,
    'min_version': '15.01.2176.0',
    'fixed_version': '15.01.2176.9',
    'kb': '5000871'
  },
  {
      'product' : '2019',
      'unsupported_cu' : 3,
      'cu' : 4,
      'min_version': '15.02.529.0',
      'fixed_version': '15.02.529.13',
      'kb': '5000871'
   },
  {
      'product' : '2019',
      'unsupported_cu' : 3,
      'cu' : 5,
      'min_version': '15.02.595.0',
      'fixed_version': '15.02.595.8',
      'kb': '5000871'
    },
  {
     'product' : '2019',
     'unsupported_cu' : 3,
     'cu' : 6,
     'min_version': '15.02.659.0',
     'fixed_version': '15.02.659.12',
     'kb': '5000871'
   },
  {
    'product' : '2019',
    'unsupported_cu' : 3,
    'cu' : 7,
    'min_version': '15.02.721.0',
    'fixed_version': '15.02.721.13',
    'kb': '5000871'
   },
  {
    'product' : '2019',
    'unsupported_cu' : 3,
    'cu' : 8,
    'min_version': '15.02.792.0',
    'fixed_version': '15.02.792.10',
    'kb': '5000871'
  }
];

vcf::microsoft::exchange::check_version_and_report
(
  app_info:app_info,
  bulletin:'MS20-12',
  constraints:constraints,
  severity:SECURITY_WARNING
);

The latest version of this script can be found in these locations depending on your platform:

  • Linux / Unix:
    /opt/nessus/lib/nessus/plugins/smb_nt_ms21_mar_exchange_oob.nasl
  • Windows:
    C:\ProgramData\Tenable\Nessus\nessus\plugins\smb_nt_ms21_mar_exchange_oob.nasl
  • Mac OS X:
    /Library/Nessus/run/lib/nessus/plugins/smb_nt_ms21_mar_exchange_oob.nasl

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How to Run

Here is how to run the Security Updates for Microsoft Exchange Server (March 2021) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

  1. Click to start a New Scan.
  2. Select Advanced Scan.
  3. Navigate to the Plugins tab.
  4. On the top right corner click to Disable All plugins.
  5. On the left side table select Windows : Microsoft Bulletins plugin family.
  6. On the right side table select Security Updates for Microsoft Exchange Server (March 2021) plugin ID 147003.
  7. Specify the target on the Settings tab and click to Save the scan.
  8. Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl smb_nt_ms21_mar_exchange_oob.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a smb_nt_ms21_mar_exchange_oob.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - smb_nt_ms21_mar_exchange_oob.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state smb_nt_ms21_mar_exchange_oob.nasl -t <IP/HOST>

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References

MSKB | Microsoft Knowledge Base: MSFT | Microsoft Security Bulletin:
  • MS21-5000871
IAVA | Information Assurance Vulnerability Alert:
  • 2021-A-0111-S
See also: Similar and related Nessus plugins:
  • 147171 - Microsoft Exchange Server Authentication Bypass
  • 147193 - Potential exposure to Hafnium Microsoft Exchange targeting
  • 147024 - Security Update for Microsoft Exchange Server 2010 SP 3 (March 2021)
  • 147724 - Security Update for Microsoft Visual Studio Code ESLint Extension (March 2021)
  • 147226 - KB5000802: Windows Security Update (March 2021)
  • 147222 - KB5000803: Windows Security Update (March 2021)
  • 147230 - KB5000807: Windows 10 March 2021 Security Update
  • 147220 - KB5000808: Windows 10 Version 1909 March 2021 Security Update
  • 147224 - KB5000809: Windows 10 Version 1803 March 2021 Security Update
  • 147223 - KB5000822: Windows 10 Version 1809 and Windows Server 2019 March 2021 Security Update
  • 147231 - KB5000851: Windows 7 and Windows Server 2008 R2 March 2021 Security Update
  • 147217 - KB5000856: Windows Server 2008 March 2021 Security Update
  • 147221 - KB5000840: Windows Server 2012 March 2021 Security Update
  • 147229 - KB5000853: Windows 8.1 and Windows Server 2012 R2 March 2021 Security Update
  • 147227 - Microsoft Windows Codecs Library Multiple Vulnerabilities (March 2021)
  • 147228 - Security Updates for Internet Explorer (March 2021)
  • 147750 - Security Updates for Microsoft SharePoint Server 2010 (March 2021)
  • 147753 - Security Updates for Microsoft SharePoint Server 2013 (March 2021)
  • 147751 - Security Updates for Microsoft Sharepoint 2016 (March 2021)
  • 147752 - Security Updates for Microsoft SharePoint Server 2019 (March 2021)
  • 147749 - Security Updates for Microsoft Visual Studio Products (March 2021)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file smb_nt_ms21_mar_exchange_oob.nasl version 1.13. For more plugins, visit the Nessus Plugin Library.

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