SB2023052448 - Anolis OS update for git

Description

This security bulletin contains information about 7 secuirty vulnerabilities.

1) Link following (CVE-ID: CVE-2023-22490)

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insecure processing of symbolic links when using local clone optimization. Git will abort local clones whose source `$GIT_DIR/objects` directory contains symbolic links, however the `objects` directory itself may still be a symbolic link. A remote attacker can trick the victim into using the local clone optimization to exfiltrate arbitrary files from the victim's system.

2) Input validation error (CVE-ID: CVE-2022-39253)

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to the way Git handles hardlinks when performing a local clone. A remote attacker can trick the victim into clocking a malicious repository and create or copy hardlinks to critical files on the system, which can result in sensitive information exposure.

3) Link following (CVE-ID: CVE-2023-23946)

The vulnerability allows an attacker to compromise the affected system.

The vulnerability exists due to application allows to overwrite files outside the working tree via the "git apply" command. A remote attacker can trick the victim to run the affected command against a malicious or compromised repository and overwrite arbitrary files on the system.

4) 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.

5) 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.

6) 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.

7) Untrusted search path (CVE-ID: CVE-2022-24765)

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

The vulnerability exists due to application uses by default the C:\.git folder. A local user with ability to write files into the said directory can place a malicious file into it and execute it with elevated privileges.

Users of the Microsoft fork of Git are vulnerable simply by starting a Git Bash.

Remediation

Install update from vendor's website.

References

• https://anas.openanolis.cn/errata/detail/ANSA-2023:0183