SB2023021579 - Slackware Linux update for git
Published: February 15, 2023 Updated: May 29, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) 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.
2) 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.
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.
Remediation
Install update from vendor's website.