Slackware 14.0 / 14.1 / 14.2 / current : git (SSA:2021-070-01) - Nessus

High Plugin ID: 147737

This page contains detailed information about the Slackware 14.0 / 14.1 / 14.2 / current : git (SSA:2021-070-01) 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
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 147737
Name: Slackware 14.0 / 14.1 / 14.2 / current : git (SSA:2021-070-01)
Filename: Slackware_SSA_2021-070-01.nasl
Vulnerability Published: 2021-03-09
This Plugin Published: 2021-03-12
Last Modification Time: 2022-01-26
Plugin Version: 1.4
Plugin Type: local
Plugin Family: Slackware Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/local_checks_enabled, Host/Slackware/packages, Host/Slackware/release

Vulnerability Information

Severity: High
Vulnerability Published: 2021-03-09
Patch Published: 2021-03-11
CVE [?]: CVE-2021-21300
CPE [?]: cpe:/o:slackware:slackware_linux, cpe:/o:slackware:slackware_linux:14.0, cpe:/o:slackware:slackware_linux:14.1, cpe:/o:slackware:slackware_linux:14.2, p-cpe:/a:slackware:slackware_linux:git

Synopsis

The remote Slackware host is missing a security update.

Description

New git packages are available for Slackware 14.0, 14.1, 14.2, and -current to fix a security issue.

Solution

Update the affected git package.

Public Exploits

Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (Metasploit Framework, GitHub)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the Slackware 14.0 / 14.1 / 14.2 / current : git (SSA:2021-070-01) vulnerability:

Metasploit: exploit/multi/http/git_lfs_clone_command_exec
[Git LFS Clone Command Exec]
GitHub: https://github.com/AlkenePan/CVE-2021-21300
[CVE-2021-21300]
GitHub: https://github.com/CppXL/CVE-2021-21300
[CVE-2021-21300]
GitHub: https://github.com/ETOCheney/cve-2021-21300
[CVE-2021-21300]
GitHub: https://github.com/Faisal78123/CVE-2021-21300
[CVE-2021-21300]
GitHub: https://github.com/Jiang59991/cve-2021-21300
[CVE-2021-21300]
GitHub: https://github.com/Jiang59991/cve-2021-21300-plus
[CVE-2021-21300]
GitHub: https://github.com/Kirill89/CVE-2021-21300
[CVE-2021-21300]
GitHub: https://github.com/Maskhe/CVE-2021-21300
[CVE-2021-21300]
GitHub: https://github.com/Mochican/CVE-2021-21300
[CVE-2021-21300]
GitHub: https://github.com/SexyBeast233/SecBooks
[CVE-2021-21300]
GitHub: https://github.com/bollwarm/SecToolSet
[CVE-2021-21300]
GitHub: https://github.com/danshuizhangyu/CVE-2021-21300
[CVE-2021-21300]
GitHub: https://github.com/erranfenech/CVE-2021-21300
[CVE-2021-21300]
GitHub: https://github.com/fengzhouc/CVE-2021-21300
[CVE-2021-21300]
GitHub: https://github.com/tao-sun2/CVE-2021-21300
[CVE-2021-21300]
GitHub: https://github.com/xiaofeihahah/CVE-2021-21300
[CVE-2021-21300]
GitHub: https://github.com/1uanWu/CVE-2021-21300
[CVE-2021-21300: Remote code exec for git]

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-2021-21300
CVSS V2 Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P/E:F/RL:OF/RC:C

CVSS Base Score:	5.1 (Medium)
Impact Subscore:	6.4
Exploitability Subscore:	4.9
CVSS Temporal Score:	4.2 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	4.2 (Medium)

CVSS V3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

CVSS Base Score:	7.5 (High)
Impact Subscore:	5.9
Exploitability Subscore:	1.6
CVSS Temporal Score:	7.0 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	7.0 (High)

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Plugin Source

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Slackware Security Advisory 2021-070-01. The text 
# itself is copyright (C) Slackware Linux, Inc.
#

include('compat.inc');

if (description)
{
  script_id(147737);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/01/26");

  script_cve_id("CVE-2021-21300");
  script_xref(name:"SSA", value:"2021-070-01");

  script_name(english:"Slackware 14.0 / 14.1 / 14.2 / current : git (SSA:2021-070-01)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Slackware host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"New git packages are available for Slackware 14.0, 14.1, 14.2, and
-current to fix a security issue.");
  # http://www.slackware.com/security/viewer.php?l=slackware-security&y=2021&m=slackware-security.436701
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5a9932c3");
  script_set_attribute(attribute:"solution", value:
"Update the affected git package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-21300");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Git LFS Clone Command Exec');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/03/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/03/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/03/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:slackware:slackware_linux:git");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.2");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Slackware Local Security Checks");

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

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Slackware/release", "Host/Slackware/packages");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("slackware.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Slackware/release")) audit(AUDIT_OS_NOT, "Slackware");
if (!get_kb_item("Host/Slackware/packages")) audit(AUDIT_PACKAGE_LIST_MISSING);


cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Slackware", cpu);


flag = 0;
if (slackware_check(osver:"14.0", pkgname:"git", pkgver:"2.17.6", pkgarch:"i486", pkgnum:"1_slack14.0")) flag++;
if (slackware_check(osver:"14.0", arch:"x86_64", pkgname:"git", pkgver:"2.17.6", pkgarch:"x86_64", pkgnum:"1_slack14.0")) flag++;

if (slackware_check(osver:"14.1", pkgname:"git", pkgver:"2.17.6", pkgarch:"i486", pkgnum:"1_slack14.1")) flag++;
if (slackware_check(osver:"14.1", arch:"x86_64", pkgname:"git", pkgver:"2.17.6", pkgarch:"x86_64", pkgnum:"1_slack14.1")) flag++;

if (slackware_check(osver:"14.2", pkgname:"git", pkgver:"2.17.6", pkgarch:"i586", pkgnum:"1_slack14.2")) flag++;
if (slackware_check(osver:"14.2", arch:"x86_64", pkgname:"git", pkgver:"2.17.6", pkgarch:"x86_64", pkgnum:"1_slack14.2")) flag++;

if (slackware_check(osver:"current", pkgname:"git", pkgver:"2.30.2", pkgarch:"i586", pkgnum:"1")) flag++;
if (slackware_check(osver:"current", arch:"x86_64", pkgname:"git", pkgver:"2.30.2", pkgarch:"x86_64", pkgnum:"1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:slackware_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/Slackware_SSA_2021-070-01.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\Slackware_SSA_2021-070-01.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/Slackware_SSA_2021-070-01.nasl

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How to Run

Here is how to run the Slackware 14.0 / 14.1 / 14.2 / current : git (SSA:2021-070-01) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select Slackware Local Security Checks plugin family.
On the right side table select Slackware 14.0 / 14.1 / 14.2 / current : git (SSA:2021-070-01) plugin ID 147737.
Specify the target on the Settings tab and click to Save the scan.
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 Slackware_SSA_2021-070-01.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a Slackware_SSA_2021-070-01.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - Slackware_SSA_2021-070-01.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 Slackware_SSA_2021-070-01.nasl -t <IP/HOST>

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References

SSA | Slackware Security Advisory:

2021-070-01

See also:

Similar and related Nessus plugins:

148193 - Amazon Linux 2 : git (ALAS-2021-1621)
148131 - Amazon Linux AMI : git (ALAS-2021-1490)
149563 - EulerOS 2.0 SP8 : git (EulerOS-SA-2021-1870)
149540 - EulerOS 2.0 SP5 : git (EulerOS-SA-2021-1897)
150227 - EulerOS 2.0 SP9 : git (EulerOS-SA-2021-1923)
150179 - EulerOS 2.0 SP9 : git (EulerOS-SA-2021-1944)
151172 - EulerOS Virtualization for ARM 64 3.0.6.0 : git (EulerOS-SA-2021-1998)
151242 - EulerOS Virtualization 3.0.6.6 : git (EulerOS-SA-2021-2033)
156521 - EulerOS Virtualization 3.0.2.6 : git (EulerOS-SA-2021-2887)
147742 - Fedora 33 : git (2021-63fcbd126e)
147815 - Fedora 32 : git (2021-ffd0b2108d)
149221 - GLSA-202104-01 : Git: User-assisted execution of arbitrary code
152154 - openSUSE 15 Security Update : git (openSUSE-SU-2021:2555-1)
147799 - openSUSE Security Update : git (openSUSE-2021-405)
147825 - Photon OS 1.0: Git PHSA-2021-1.0-0369
147824 - Photon OS 2.0: Git PHSA-2021-2.0-0327
147821 - Photon OS 3.0: Git PHSA-2021-3.0-0207
148030 - Photon OS 4.0: Git PHSA-2021-4.0-0004
147749 - Security Updates for Microsoft Visual Studio Products (March 2021)
147436 - SUSE SLES12 Security Update : git (SUSE-SU-2021:0756-1)
147564 - SUSE SLED15 / SLES15 Security Update : git (SUSE-SU-2021:0757-1)
152157 - SUSE SLED15 / SLES15 Security Update : git (SUSE-SU-2021:2555-1)
148010 - Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 20.10 : Git vulnerability (USN-4761-1)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file Slackware_SSA_2021-070-01.nasl version 1.4. For more plugins, visit the Nessus Plugin Library.

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Slackware 14.0 / 14.1 / 14.2 / current : git (SSA:2021-070-01) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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