Debian DSA-4311-1 : git - security update - Nessus
Critical Plugin ID: 117957This page contains detailed information about the Debian DSA-4311-1 : git - security update Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.
Plugin Overview
ID: 117957
Name: Debian DSA-4311-1 : git - security update
Filename: debian_DSA-4311.nasl
Vulnerability Published: N/A
This Plugin Published: 2018-10-09
Last Modification Time: 2019-04-05
Plugin Version: 1.6
Plugin Type: local
Plugin Family: Debian Local Security Checks
Dependencies:
ssh_get_info.nasl
Required KB Items [?]: Host/Debian/dpkg-l, Host/Debian/release, Host/local_checks_enabled
Vulnerability Information
Severity: Critical
Vulnerability Published: N/A
Patch Published: 2018-10-05
CVE [?]: CVE-2018-17456
CPE [?]: cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:git
Synopsis
The remote Debian host is missing a security-related update.
Description
joernchen of Phenoelit discovered that git, a fast, scalable, distributed revision control system, is prone to an arbitrary code execution vulnerability via a specially crafted .gitmodules file in a project cloned with --recurse-submodules.
Solution
Upgrade the git packages.
For the stable distribution (stretch), this problem has been fixed in version 1:2.11.0-3+deb9u4.
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 Debian DSA-4311-1 : git - security update vulnerability:
- Metasploit: exploit/multi/http/git_submodule_url_exec
[Malicious Git HTTP Server For CVE-2018-17456] - Exploit-DB: exploits/linux/local/45548.txt
[EDB-45548: Git Submodule - Arbitrary Code Execution (PoC)] - Exploit-DB: exploits/linux/local/45631.md
[EDB-45631: Git Submodule - Arbitrary Code Execution] - GitHub: https://github.com/799600966/CVE-2018-17456
[CVE-2018-17456] - GitHub: https://github.com/AnonymKing/CVE-2017-1000117
[CVE-2018-17456] - GitHub: https://github.com/KorayAgaya/TrivyWeb
[CVE-2018-17456] - GitHub: https://github.com/matlink/CVE-2018-17456
[CVE-2018-17456] - GitHub: https://github.com/shpik-kr/CVE-2018-17456
[CVE-2018-17456: 1-day] - GitHub: https://github.com/siddharthraopotukuchi/trivy
[CVE-2018-17456] - GitHub: https://github.com/simiyo/trivy
[CVE-2018-17456] - GitHub: https://github.com/t31m0/Vulnerability-Scanner-for-Containers
[CVE-2018-17456] - GitHub: https://github.com/umahari/security
[CVE-2018-17456] - GitHub: https://github.com/zhengjim/loophole
[CVE-2018-17456] - GitHub: https://github.com/offensive-security/exploitdb-bin-sploits/blob/master/bin-sploits/45631.zip
[EDB-45631] - GitHub: https://github.com/AnonymKing/CVE-2018-17456
[CVE-2018-17456: CVE-2018-17456漏洞复现(PoC+Exp)] - GitHub: https://github.com/back2zero/GIT_CVE_2018_17456
[CVE-2018-17456: GIT_CVE_2018_17456]
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 V2 Vector [?]: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:F/RL:OF/RC:C
CVSS Base Score: | 7.5 (High) |
Impact Subscore: | 6.4 |
Exploitability Subscore: | 10.0 |
CVSS Temporal Score: | 6.2 (Medium) |
CVSS Environmental Score: | NA (None) |
Modified Impact Subscore: | NA |
Overall CVSS Score: | 6.2 (Medium) |
CVSS Base Score: | 9.8 (Critical) |
Impact Subscore: | 5.9 |
Exploitability Subscore: | 3.9 |
CVSS Temporal Score: | 9.1 (Critical) |
CVSS Environmental Score: | NA (None) |
Modified Impact Subscore: | NA |
Overall CVSS Score: | 9.1 (Critical) |
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Plugin Source
This is the debian_DSA-4311.nasl nessus plugin source code. This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DSA-4311. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include("compat.inc");
if (description)
{
script_id(117957);
script_version("1.6");
script_cvs_date("Date: 2019/04/05 23:25:05");
script_cve_id("CVE-2018-17456");
script_xref(name:"DSA", value:"4311");
script_name(english:"Debian DSA-4311-1 : git - security update");
script_summary(english:"Checks dpkg output for the updated package");
script_set_attribute(
attribute:"synopsis",
value:"The remote Debian host is missing a security-related update."
);
script_set_attribute(
attribute:"description",
value:
"joernchen of Phenoelit discovered that git, a fast, scalable,
distributed revision control system, is prone to an arbitrary code
execution vulnerability via a specially crafted .gitmodules file in a
project cloned with --recurse-submodules."
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/source-package/git"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/stretch/git"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2018/dsa-4311"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the git packages.
For the stable distribution (stretch), this problem has been fixed in
version 1:2.11.0-3+deb9u4."
);
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:F/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:F/RL:O/RC:C");
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-2018-17456');
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:debian:debian_linux:git");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");
script_set_attribute(attribute:"patch_publication_date", value:"2018/10/05");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/10/09");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Debian Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
exit(0);
}
include("audit.inc");
include("debian_package.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (deb_check(release:"9.0", prefix:"git", reference:"1:2.11.0-3+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"git-all", reference:"1:2.11.0-3+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"git-arch", reference:"1:2.11.0-3+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"git-core", reference:"1:2.11.0-3+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"git-cvs", reference:"1:2.11.0-3+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"git-daemon-run", reference:"1:2.11.0-3+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"git-daemon-sysvinit", reference:"1:2.11.0-3+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"git-doc", reference:"1:2.11.0-3+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"git-el", reference:"1:2.11.0-3+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"git-email", reference:"1:2.11.0-3+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"git-gui", reference:"1:2.11.0-3+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"git-man", reference:"1:2.11.0-3+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"git-mediawiki", reference:"1:2.11.0-3+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"git-svn", reference:"1:2.11.0-3+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"gitk", reference:"1:2.11.0-3+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"gitweb", reference:"1:2.11.0-3+deb9u4")) flag++;
if (flag)
{
if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
else security_hole(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/debian_DSA-4311.nasl
- Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\debian_DSA-4311.nasl
- Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/debian_DSA-4311.nasl
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How to Run
Here is how to run the Debian DSA-4311-1 : git - security update 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 Debian Local Security Checks plugin family.
- On the right side table select Debian DSA-4311-1 : git - security update plugin ID 117957.
- 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 debian_DSA-4311.nasl -t <IP/HOST>
Run the plugin with audit trail message on the console:
/opt/nessus/bin/nasl -a debian_DSA-4311.nasl -t <IP/HOST>
Run the plugin with trace script execution written to the console (useful for debugging):
/opt/nessus/bin/nasl -T - debian_DSA-4311.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 debian_DSA-4311.nasl -t <IP/HOST>
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References
DSA | Debian Security Advisory: See also:
- https://www.tenable.com/plugins/nessus/117957
- https://packages.debian.org/source/stretch/git
- https://security-tracker.debian.org/tracker/source-package/git
- https://www.debian.org/security/2018/dsa-4311
- https://vulners.com/nessus/DEBIAN_DSA-4311.NASL
- 118059 - Slackware 14.0 / 14.1 / 14.2 / current : git (SSA:2018-283-01)
- 118083 - Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : Git vulnerability (USN-3791-1)
- 118103 - Fedora 27 : libgit2 (2018-7d993184f6)
- 118113 - openSUSE Security Update : git (openSUSE-2018-1147)
- 118124 - FreeBSD : Libgit2 -- multiple vulnerabilities (8c08ab4c-d06c-11e8-b35c-001b217b3468)
- 118169 - openSUSE Security Update : git (openSUSE-2018-1177)
- 118213 - Amazon Linux AMI : git (ALAS-2018-1093)
- 118244 - Fedora 27 : git (2018-d5139c4fd6)
- 118400 - Amazon Linux 2 : git (ALAS-2018-1093)
- 118555 - RHEL 7 : git (RHSA-2018:3408)
- 118859 - Oracle Linux 7 : git (ELSA-2018-3408)
- 119046 - CentOS 7 : git (CESA-2018:3408)
- 119206 - Scientific Linux Security Update : git on SL7.x x86_64 (20181031)
- 119516 - EulerOS 2.0 SP3 : git (EulerOS-SA-2018-1388)
- 119546 - openSUSE Security Update : libgit2 (openSUSE-2018-1517)
- 119649 - SUSE SLES12 Security Update : git (SUSE-SU-2018:4088-1)
- 120129 - SUSE SLED15 / SLES15 Security Update : git (SUSE-SU-2018:3150-1)
Version
This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file debian_DSA-4311.nasl version 1.6. For more plugins, visit the Nessus Plugin Library.
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