SB2024091401 - Debian update for git

Description

This security bulletin contains information about 8 secuirty vulnerabilities.

1) Link following (CVE-ID: CVE-2023-25652)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a symlink following issue in "git apply --reject". A local user can create a specially crafted symbolic link to write files outside of the worktree.

2) Insufficient verification of data authenticity (CVE-ID: CVE-2023-25815)

The vulnerability allows a local user to tamper with Git messages.

The vulnerability exists due to the way Git processes localized messages. A local user on a multi-user machine can display a malicious message to the user.

3) Input validation error (CVE-ID: CVE-2023-29007)

The vulnerability allows an attacker to tamper with Git configuration.

The vulnerability exists due to insufficient input validation in "git submodule deinit" when renaming or deleting a section from a configuration file. A remote attacker can trick the victim into running the command a malicious configuration file and tamper with Git configuration on the affected system.

4) Arbitrary file upload (CVE-ID: CVE-2024-32002)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient validation of file during file upload. A remote attacker can upload a malicious file and execute it on the server.

5) Code Injection (CVE-ID: CVE-2024-32004)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a process control issue while cloning special-crafted local repositories. A remote attacker can execute arbitrary code on the target system.

6) UNIX Hard Link (CVE-ID: CVE-2024-32020)

The vulnerability allows a remote attacker to compromise the original repository.

The vulnerability exists due to insecure hardlink following when working with local clones. 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.

7) UNIX symbolic link following (CVE-ID: CVE-2024-32021)

The vulnerability allows a remote attacker to compromise the original repository.

The vulnerability exists due to insecure symlink following issue. 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.

8) Code injection (CVE-ID: CVE-2024-32465)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation when working with zip files or tarballs during cloning. A remote attacker can and execute arbitrary code on the target system.

Remediation

Install update from vendor's website.

References

• https://lists.debian.org/debian-security-announce/2024/msg00182.html