Alpine: git: security update to 2.43.4-r0

critical Tenable Self-Hosted Container Security Plugin ID 408398

Description

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

- Git is a revision control system. Prior to versions 2.45.1, 2.44.1, 2.43.4, 2.42.2, 2.41.1, 2.40.2, and
2.39.4, repositories with submodules can be crafted in a way that exploits a bug in Git whereby it can be
fooled into writing files not into the submodule's worktree but into a `.git/` directory. This allows
writing a hook that will be executed while the clone operation is still running, giving the user no
opportunity to inspect the code that is being executed. The problem has been patched in versions 2.45.1,
2.44.1, 2.43.4, 2.42.2, 2.41.1, 2.40.2, and 2.39.4. If symbolic link support is disabled in Git (e.g. via
`git config --global core.symlinks false`), the described attack won't work. As always, it is best to
avoid cloning repositories from untrusted sources. (CVE-2024-32002)

- Git is a revision control system. Prior to versions 2.45.1, 2.44.1, 2.43.4, 2.42.2, 2.41.1, 2.40.2, and
2.39.4, an attacker can prepare a local repository in such a way that, when cloned, will execute arbitrary
code during the operation. The problem has been patched in versions 2.45.1, 2.44.1, 2.43.4, 2.42.2,
2.41.1, 2.40.2, and 2.39.4. As a workaround, avoid cloning repositories from untrusted sources.
(CVE-2024-32004)

- Git is a revision control system. Prior to versions 2.45.1, 2.44.1, 2.43.4, 2.42.2, 2.41.1, 2.40.2, and
2.39.4, local clones may end up hardlinking files into the target repository's object database when source
and target repository reside on the same disk. If the source repository is owned by a different user, then
those hardlinked files may be rewritten at any point in time by the untrusted user. Cloning local
repositories will cause Git to either copy or hardlink files of the source repository into the target
repository. This significantly speeds up such local clones compared to doing a "proper" clone and saves
both disk space and compute time. When cloning a repository located on the same disk that is owned by a
different user than the current user we also end up creating such hardlinks. These files will continue to
be owned and controlled by the potentially-untrusted user and can be rewritten by them at will in the
future. The problem has been patched in versions 2.45.1, 2.44.1, 2.43.4, 2.42.2, 2.41.1, 2.40.2, and
2.39.4. (CVE-2024-32020)

- Git is a revision control system. Prior to versions 2.45.1, 2.44.1, 2.43.4, 2.42.2, 2.41.1, 2.40.2, and
2.39.4, when cloning a local source repository that contains symlinks via the filesystem, Git may create
hardlinks to arbitrary user-readable files on the same filesystem as the target repository in the
`objects/` directory. Cloning a local repository over the filesystem may creating hardlinks to arbitrary
user-owned files on the same filesystem in the target Git repository's `objects/` directory. When cloning
a repository over the filesystem (without explicitly specifying the `file://` protocol or `--no-local`),
the optimizations for local cloning will be used, which include attempting to hard link the object files
instead of copying them. While the code includes checks against symbolic links in the source repository,
which were added during the fix for CVE-2022-39253, these checks can still be raced because the hard link
operation ultimately follows symlinks. If the object on the filesystem appears as a file during the check,
and then a symlink during the operation, this will allow the adversary to bypass the check and create
hardlinks in the destination objects directory to arbitrary, user-readable files. The problem has been
patched in versions 2.45.1, 2.44.1, 2.43.4, 2.42.2, 2.41.1, 2.40.2, and 2.39.4. (CVE-2024-32021)

- Git is a revision control system. The Git project recommends to avoid working in untrusted repositories,
and instead to clone it first with `git clone --no-local` to obtain a clean copy. Git has specific
protections to make that a safe operation even with an untrusted source repository, but vulnerabilities
allow those protections to be bypassed. In the context of cloning local repositories owned by other users,
this vulnerability has been covered in CVE-2024-32004. But there are circumstances where the fixes for
CVE-2024-32004 are not enough: For example, when obtaining a `.zip` file containing a full copy of a Git
repository, it should not be trusted by default to be safe, as e.g. hooks could be configured to run
within the context of that repository. The problem has been patched in versions 2.45.1, 2.44.1, 2.43.4,
2.42.2, 2.41.1, 2.40.2, and 2.39.4. As a workaround, avoid using Git in repositories that have been
obtained via archives from untrusted sources. (CVE-2024-32465)

Plugin Details

Severity: Critical

ID: 408398

Version: Revision 1.14

Type: Local

Family: Alpine Linux Local Security Checks

Published: 5/15/2024

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: High

Score: 7.7

Percentile: 99.07

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 6

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

CVSS Score Source: CVE-2024-32002

CVSS v3

Risk Factor: Critical

Base Score: 9

Temporal Score: 8.1

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 5/14/2024

Reference Information

CVE: CVE-2024-32002, CVE-2024-32004, CVE-2024-32020, CVE-2024-32021, CVE-2024-32465

Detections

Analytics