CentOS 6 : git (CESA-2017:2485) - Nessus

High Plugin ID: 102549

This page contains detailed information about the CentOS 6 : git (CESA-2017:2485) 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: 102549
Name: CentOS 6 : git (CESA-2017:2485)
Filename: centos_RHSA-2017-2485.nasl
Vulnerability Published: 2017-10-05
This Plugin Published: 2017-08-18
Last Modification Time: 2021-01-04
Plugin Version: 3.11
Plugin Type: local
Plugin Family: CentOS Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/CentOS/release, Host/CentOS/rpm-list, Host/local_checks_enabled

Vulnerability Information

Synopsis

The remote CentOS host is missing one or more security updates.

Description

An update for git is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Git is a distributed revision control system with a decentralized architecture. As opposed to centralized version control systems with a client-server model, Git ensures that each working copy of a Git repository is an exact copy with complete revision history. This not only allows the user to work on and contribute to projects without the need to have permission to push the changes to their official repositories, but also makes it possible for the user to work with no network connection.

Security Fix(es) :

* A shell command injection flaw related to the handling of 'ssh' URLs has been discovered in Git. An attacker could use this flaw to execute shell commands with the privileges of the user running the Git client, for example, when performing a 'clone' action on a malicious repository or a legitimate repository containing a malicious commit. (CVE-2017-1000117)

Solution

Update the affected git packages.

Public Exploits

Target Network Port(s): N/A
Target Asset(s): N/A
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 CentOS 6 : git (CESA-2017:2485) vulnerability:

Metasploit: exploit/multi/http/git_submodule_command_exec
[Malicious Git HTTP Server For CVE-2017-1000117]
Exploit-DB: exploits/python/remote/42599.rb
[EDB-42599: Git < 2.7.5 - Command Injection (Metasploit)]
GitHub: https://github.com/Jerry-zhuang/CVE-2017-1000117
[CVE-2017-1000117]
GitHub: https://github.com/M1a0rz/test
[CVE-2017-1000117]
GitHub: https://github.com/Manouchehri/CVE-2017-1000117
[CVE-2017-1000117]
GitHub: https://github.com/Q2h1Cg/CVE-2017-1000117
[CVE-2017-1000117]
GitHub: https://github.com/VulApps/CVE-2017-1000117
[CVE-2017-1000117]
GitHub: https://github.com/bells17/CVE-2017-1000117
[CVE-2017-1000117: https://github.com/greymd/CVE-2017-1000117 の勉強用]
GitHub: https://github.com/dfgfdug8df7/some
[CVE-2017-1000117]
GitHub: https://github.com/ieee0824/CVE-2017-1000117
[CVE-2017-1000117]
GitHub: https://github.com/ikmski/CVE-2017-1000117
[CVE-2017-1000117]
GitHub: https://github.com/leezp/CVE-2017-1000117
[CVE-2017-1000117]
GitHub: https://github.com/mtrampic/cvedetails_nifi_web_scrape
[CVE-2017-1000117]
GitHub: https://github.com/sasairc/CVE-2017-1000117_wasawasa
[CVE-2017-1000117]
GitHub: https://github.com/shogo82148/Fix-CVE-2017-1000117
[CVE-2017-1000117]
GitHub: https://github.com/siling2017/CVE-2017-1000117
[CVE-2017-1000117]
GitHub: https://github.com/simith003/demo
[CVE-2017-1000117]
GitHub: https://github.com/takehaya/CVE-2017-1000117
[CVE-2017-1000117]
GitHub: https://github.com/thelastbyte/CVE-2017-1000117
[CVE-2017-1000117]
GitHub: https://github.com/tigerszk/ssmjp-100th-message
[CVE-2017-1000117]
GitHub: https://github.com/vulsio/gost
[CVE-2017-1000117]
GitHub: http://bobao.360.cn/learning/detail/4244.html
[CVE-2017-1000117]
GitHub: https://github.com/AnonymKing/CVE-2017-1000117
[CVE-2017-1000117: CVE-2017-1000117漏洞复现（PoC+Exp）]
GitHub: https://github.com/cved-sources/cve-2017-1000117
[CVE-2017-1000117: Cve-2017-1000117]
GitHub: https://github.com/GrahamMThomas/test-git-vuln_CVE-2017-1000117
[CVE-2017-1000117: Repo to test the new git vulnerability]
GitHub: https://github.com/greymd/CVE-2017-1000117
[CVE-2017-1000117: Check Git's vulnerability CVE-2017-1000117]
GitHub: https://github.com/ieee0824/CVE-2017-1000117-sl
[CVE-2017-1000117: Experiment of CVE-2017-1000117]
GitHub: https://github.com/nkoneko/CVE-2017-1000117
[CVE-2017-1000117: GitのCommand Injectionの脆弱性を利用してスクリプトを落として実行する例]
GitHub: https://github.com/rootclay/CVE-2017-1000117
[CVE-2017-1000117]
GitHub: https://github.com/Shadow5523/CVE-2017-1000117-test
[CVE-2017-1000117: CVE-2017-1000117の検証]
GitHub: https://github.com/timwr/CVE-2017-1000117
[CVE-2017-1000117: Proof of concept of CVE-2017-1000117]
GitHub: https://github.com/alilangtest/CVE-2017-1000117
[CVE-2017-1000117: Test]
GitHub: https://github.com/chenzhuo0618/test
[CVE-2017-1000117: Test for CVE-2017-1000117]

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-2017-1000117
CVSS V2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P/E:F/RL:OF/RC:C

CVSS Base Score:	6.8 (Medium)
Impact Subscore:	6.4
Exploitability Subscore:	8.6
CVSS Temporal Score:	5.6 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	5.6 (Medium)

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

CVSS Base Score:	8.8 (High)
Impact Subscore:	5.9
Exploitability Subscore:	2.8
CVSS Temporal Score:	8.2 (High)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	8.2 (High)

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Plugin Source

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2017:2485 and 
# CentOS Errata and Security Advisory 2017:2485 respectively.
#

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

if (description)
{
  script_id(102549);
  script_version("3.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id("CVE-2017-1000117");
  script_xref(name:"RHSA", value:"2017:2485");

  script_name(english:"CentOS 6 : git (CESA-2017:2485)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"An update for git is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security
impact of Important. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

Git is a distributed revision control system with a decentralized
architecture. As opposed to centralized version control systems with a
client-server model, Git ensures that each working copy of a Git
repository is an exact copy with complete revision history. This not
only allows the user to work on and contribute to projects without the
need to have permission to push the changes to their official
repositories, but also makes it possible for the user to work with no
network connection.

Security Fix(es) :

* A shell command injection flaw related to the handling of 'ssh' URLs
has been discovered in Git. An attacker could use this flaw to execute
shell commands with the privileges of the user running the Git client,
for example, when performing a 'clone' action on a malicious
repository or a legitimate repository containing a malicious commit.
(CVE-2017-1000117)"
  );
  # https://lists.centos.org/pipermail/centos-announce/2017-August/022519.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?b2c99476"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected git packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:L/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-2017-1000117");
  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:'Malicious Git HTTP Server For CVE-2017-1000117');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:emacs-git");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:emacs-git-el");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git-all");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git-cvs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git-daemon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git-email");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git-gui");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:git-svn");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:gitk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:gitweb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:perl-Git");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/10/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/08/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/08/18");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list");

  exit(0);
}


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


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 6.x", "CentOS " + os_ver);

if (!get_kb_item("Host/CentOS/rpm-list")) 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, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-6", reference:"emacs-git-1.7.1-9.el6_9")) flag++;
if (rpm_check(release:"CentOS-6", reference:"emacs-git-el-1.7.1-9.el6_9")) flag++;
if (rpm_check(release:"CentOS-6", reference:"git-1.7.1-9.el6_9")) flag++;
if (rpm_check(release:"CentOS-6", reference:"git-all-1.7.1-9.el6_9")) flag++;
if (rpm_check(release:"CentOS-6", reference:"git-cvs-1.7.1-9.el6_9")) flag++;
if (rpm_check(release:"CentOS-6", reference:"git-daemon-1.7.1-9.el6_9")) flag++;
if (rpm_check(release:"CentOS-6", reference:"git-email-1.7.1-9.el6_9")) flag++;
if (rpm_check(release:"CentOS-6", reference:"git-gui-1.7.1-9.el6_9")) flag++;
if (rpm_check(release:"CentOS-6", reference:"git-svn-1.7.1-9.el6_9")) flag++;
if (rpm_check(release:"CentOS-6", reference:"gitk-1.7.1-9.el6_9")) flag++;
if (rpm_check(release:"CentOS-6", reference:"gitweb-1.7.1-9.el6_9")) flag++;
if (rpm_check(release:"CentOS-6", reference:"perl-Git-1.7.1-9.el6_9")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "emacs-git / emacs-git-el / git / git-all / git-cvs / git-daemon / etc");
}

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/centos_RHSA-2017-2485.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\centos_RHSA-2017-2485.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/centos_RHSA-2017-2485.nasl

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How to Run

Here is how to run the CentOS 6 : git (CESA-2017:2485) 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 CentOS Local Security Checks plugin family.
On the right side table select CentOS 6 : git (CESA-2017:2485) plugin ID 102549.
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 centos_RHSA-2017-2485.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a centos_RHSA-2017-2485.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - centos_RHSA-2017-2485.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 centos_RHSA-2017-2485.nasl -t <IP/HOST>

Go back to menu.

References

RHSA | Red Hat Security Advisory:

2017:2485

See also:

Similar and related Nessus plugins:

102870 - Amazon Linux AMI : git (ALAS-2017-882)
102769 - CentOS 7 : git (CESA-2017:2484)
102788 - Debian DLA-1068-1 : git security update
102374 - Debian DSA-3934-1 : git - security update
103025 - EulerOS 2.0 SP1 : git (EulerOS-SA-2017-1187)
103026 - EulerOS 2.0 SP2 : git (EulerOS-SA-2017-1188)
124888 - EulerOS Virtualization for ARM 64 3.0.1.0 : git (EulerOS-SA-2019-1385)
124923 - EulerOS Virtualization 3.0.1.0 : git (EulerOS-SA-2019-1420)
102458 - Fedora 25 : git (2017-8ba7572cfd)
102461 - Fedora 26 : git (2017-b1b3ae6666)
103278 - GLSA-201709-10 : Git: Command injection
102494 - Git for Windows 2.7.x < 2.7.6 / 2.8.x < 2.8.6 / 2.9.x < 2.9.5 / 2.10.x < 2.10.4 / 2.11.x < 2.11.13 / 2.12.x < 2.12.4 / 2.13.x < 2.13.5 / 2.14.x < 2.14.1 Malicious SSH URL Command Execution
103359 - Apple Xcode < 9.0 Multiple RCE (macOS)
127364 - NewStart CGSL MAIN 4.05 : git Vulnerability (NS-SA-2019-0120)
102558 - openSUSE Security Update : git (openSUSE-2017-939)
102943 - openSUSE Security Update : git (openSUSE-2017-988)
102534 - Oracle Linux 7 : git (ELSA-2017-2484)
102569 - Oracle Linux 6 : git (ELSA-2017-2485)
102537 - RHEL 7 : git (RHSA-2017:2484)
102538 - RHEL 6 : git (RHSA-2017:2485)
103349 - RHEL 7 : Mobile Application Platform (RHSA-2017:2674)
102576 - Scientific Linux Security Update : git on SL6.x i386/x86_64 (20170817)
102674 - Scientific Linux Security Update : git on SL7.x x86_64 (20170817)
102432 - Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / 14.2 / current : git (SSA:2017-223-01)
102914 - SUSE SLES12 Security Update : git (SUSE-SU-2017:2320-1)
135580 - SUSE SLES12 Security Update : git (SUSE-SU-2020:0992-1)
102423 - Ubuntu 14.04 LTS / 16.04 LTS / 17.04 : git vulnerability (USN-3387-1)
119223 - Virtuozzo 6 : emacs-git / emacs-git-el / git / git-all / git-cvs / etc (VZLSA-2017-2485)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file centos_RHSA-2017-2485.nasl version 3.11. For more plugins, visit the Nessus Plugin Library.

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CentOS 6 : git (CESA-2017:2485) - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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