SB2023122708 - Gentoo update for Git
Published: December 27, 2023 Updated: August 16, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 11 secuirty vulnerabilities.
1) Integer overflow (CVE-ID: CVE-2022-23521)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input when parsing the .gitattributes attributes. A remote attacker can trick the victim into cloning a specially crafted repository and execute arbitrary code on the system.
2) 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.
3) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2022-29187)
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions. A remote user can bypass implemented security restrictions and privilege escalation on the system when navigating as root into a shared tmp directory owned by the victim, but where an attacker can create a git repository.
4) 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.
5) Heap-based buffer overflow (CVE-ID: CVE-2022-39260)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the "git shell" command when handling untrusted input. A remote attacker can trick the victim to execute the affected command against a malicious repository, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
6) Heap-based buffer overflow (CVE-ID: CVE-2022-41903)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error during git archive invocation. A remote attacker can trick the victim into using the application against a specially crafted archive, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
7) 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.
8) 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.
9) 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.
10) 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.
11) 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.
Remediation
Install update from vendor's website.