Amazon Linux 2 : git (ALAS-2023-2072)

high Nessus Plugin ID 176946

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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 2.40.1-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2023-2072 advisory.

- Git is a revision control system. Prior to versions 2.30.9, 2.31.8, 2.32.7, 2.33.8, 2.34.8, 2.35.8, 2.36.6, 2.37.7, 2.38.5, 2.39.3, and 2.40.1, by feeding specially crafted input to `git apply --reject`, a path outside the working tree can be overwritten with partially controlled contents (corresponding to the rejected hunk(s) from the given patch). A fix is available in versions 2.30.9, 2.31.8, 2.32.7, 2.33.8, 2.34.8, 2.35.8, 2.36.6, 2.37.7, 2.38.5, 2.39.3, and 2.40.1. As a workaround, avoid using `git apply` with `--reject` when applying patches from an untrusted source. Use `git apply --stat` to inspect a patch before applying; avoid applying one that create a conflict where a link corresponding to the `*.rej` file exists. (CVE-2023-25652)

- Git is a revision control system. Prior to versions 2.30.9, 2.31.8, 2.32.7, 2.33.8, 2.34.8, 2.35.8, 2.36.6, 2.37.7, 2.38.5, 2.39.3, and 2.40.1, a specially crafted `.gitmodules` file with submodule URLs that are longer than 1024 characters can used to exploit a bug in `config.c::git_config_copy_or_rename_section_in_file()`. This bug can be used to inject arbitrary configuration into a user's `$GIT_DIR/config` when attempting to remove the configuration section associated with that submodule. When the attacker injects configuration values which specify executables to run (such as `core.pager`, `core.editor`, `core.sshCommand`, etc.) this can lead to a remote code execution. A fix A fix is available in versions 2.30.9, 2.31.8, 2.32.7, 2.33.8, 2.34.8, 2.35.8, 2.36.6, 2.37.7, 2.38.5, 2.39.3, and 2.40.1. As a workaround, avoid running `git submodule deinit` on untrusted repositories or without prior inspection of any submodule sections in `$GIT_DIR/config`. (CVE-2023-29007)

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: High

ID: 176946

File Name: al2_ALAS-2023-2072.nasl

Version: 1.1

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 6/8/2023

Updated: 6/9/2023

Supported Sensors: Agentless 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: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2023-25652

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

CVSS Score Source: CVE-2023-29007

Vulnerability Information

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

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: 6/5/2023

Vulnerability Publication Date: 4/25/2023

Reference Information

CVE: CVE-2023-25652, CVE-2023-29007

Detections

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