SB20240806125 - Amazon Linux AMI update for libarchive
Published: August 6, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) UNIX symbolic link following (CVE-ID: CVE-2021-31566)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a symlink following issue when extracting files from the archive. A local user can create a specially crafted symbolic link to a critical file on the system, place it into an archive and modify modes, times, access control lists, and flags of a file outside of the archive.
2) Use-after-free (CVE-ID: CVE-2021-36976)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error in copy_string. A remote attacker can cause a denial of service condition on the target system.
3) Out-of-bounds read (CVE-ID: CVE-2022-26280)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition when processing ZIP files in zipx_lzma_alone_init. A remote attacker can create a specially crafted .zip archive, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
Remediation
Install update from vendor's website.