Amazon Linux 2 : git (ALAS-2023-1943)

critical Nessus Plugin ID 171819

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of git installed on the remote host is prior to 2.23.1-0. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2023-1943 advisory.

A flaw was found in the git fast-import command where it provides the export-marks feature that may unexpectedly overwrite arbitrary paths. An attacker can abuse this flaw if they can control the input passed to the fast-import command by using the export-marks feature and overwrite arbitrary files, but would not have complete control on the content of the file. (CVE-2019-1348)

An improper input validation flaw was discovered in git in the way it handles git submodules. A remote attacker could abuse this flaw to trick a victim user into recursively cloning a malicious repository, which, under certain circumstances, could fool git into using the same git directory twice and potentially cause remote code execution. (CVE-2019-1349)

A remote code execution vulnerability exists when Git for Visual Studio improperly sanitizes input, aka 'Git for Visual Studio Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-1349, CVE-2019-1352, CVE-2019-1354, CVE-2019-1387. (CVE-2019-1350)

A tampering vulnerability exists when Git for Visual Studio improperly handles virtual drive paths, aka 'Git for Visual Studio Tampering Vulnerability'. (CVE-2019-1351)

A remote code execution vulnerability exists when Git for Visual Studio improperly sanitizes input, aka 'Git for Visual Studio Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-1349, CVE-2019-1350, CVE-2019-1354, CVE-2019-1387. (CVE-2019-1352)

An issue was found in Git before v2.24.1, v2.23.1, v2.22.2, v2.21.1, v2.20.2, v2.19.3, v2.18.2, v2.17.3, v2.16.6, v2.15.4, and v2.14.6. When running Git in the Windows Subsystem for Linux (also known as WSL) while accessing a working directory on a regular Windows drive, none of the NTFS protections were active.
(CVE-2019-1353)

A remote code execution vulnerability exists when Git for Visual Studio improperly sanitizes input, aka 'Git for Visual Studio Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-1349, CVE-2019-1350, CVE-2019-1352, CVE-2019-1387. (CVE-2019-1354)

A flaw was discovered where git improperly validates submodules' names used to construct git metadata paths and does not prevent them from being nested in existing directories used to store another submodule's metadata. A remote attacker could abuse this flaw to trick a victim user into cloning a malicious repository containing submodules, which, when recursively cloned, would trigger the flaw and remotely execute code on the victim's machine. (CVE-2019-1387)

A security bypass was discovered in git, which allows arbitrary commands to be executed during the update of git submodules. A remote attacker may trick a victim user into cloning a malicious repository that initially looks fine, allowing access to bypass the security mechanisms that prevent the execution of arbitrary commands during the submodule initialization. After following an update of the repository and the submodules done by the victim user, vulnerable versions of git may use the update setting in the .gitmodules file and execute arbitrary commands. (CVE-2019-19604)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Run 'yum update git' to update your system.

Plugin Details

Severity: Critical

ID: 171819

File Name: al2_ALAS-2023-1943.nasl

Version: 1.2

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 2/23/2023

Updated: 12/11/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 7.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2019-19604

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2019-1353

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:git-p4, p-cpe:/a:amazon:linux:git-subtree, p-cpe:/a:amazon:linux:git, p-cpe:/a:amazon:linux:git-daemon, p-cpe:/a:amazon:linux:git-core-doc, p-cpe:/a:amazon:linux:git-svn, p-cpe:/a:amazon:linux:perl-git, p-cpe:/a:amazon:linux:git-cvs, p-cpe:/a:amazon:linux:git-core, p-cpe:/a:amazon:linux:gitweb, p-cpe:/a:amazon:linux:git-all, p-cpe:/a:amazon:linux:git-debuginfo, p-cpe:/a:amazon:linux:gitk, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:git-gui, p-cpe:/a:amazon:linux:git-instaweb, p-cpe:/a:amazon:linux:perl-git-svn, p-cpe:/a:amazon:linux:git-email

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/17/2023

Vulnerability Publication Date: 12/9/2019

Reference Information

CVE: CVE-2019-1348, CVE-2019-1349, CVE-2019-1350, CVE-2019-1351, CVE-2019-1352, CVE-2019-1353, CVE-2019-1354, CVE-2019-1387, CVE-2019-19604

Detections

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