ALAS-2023-2374

Related Vulnerabilities: CVE-2021-31566  

An improper link resolution flaw can occur while extracting an archive leading to changing modes, times, access control lists, and flags of a file outside of the archive. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to gain more privileges in a system. (CVE-2021-31566)

ALAS-2023-2374


Amazon Linux 2 Security Advisory: ALAS-2023-2374
Advisory Release Date: 2023-11-29 22:20 Pacific
Advisory Updated Date: 2023-12-04 21:45 Pacific
Severity: Medium

Issue Overview:

An improper link resolution flaw can occur while extracting an archive leading to changing modes, times, access control lists, and flags of a file outside of the archive. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to gain more privileges in a system. (CVE-2021-31566)


Affected Packages:

libarchive


Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.


Issue Correction:
Run yum update libarchive to update your system.

New Packages:
aarch64:
    libarchive-3.1.2-14.amzn2.0.3.aarch64
    libarchive-devel-3.1.2-14.amzn2.0.3.aarch64
    bsdtar-3.1.2-14.amzn2.0.3.aarch64
    bsdcpio-3.1.2-14.amzn2.0.3.aarch64
    libarchive-debuginfo-3.1.2-14.amzn2.0.3.aarch64

i686:
    libarchive-3.1.2-14.amzn2.0.3.i686
    libarchive-devel-3.1.2-14.amzn2.0.3.i686
    bsdtar-3.1.2-14.amzn2.0.3.i686
    bsdcpio-3.1.2-14.amzn2.0.3.i686
    libarchive-debuginfo-3.1.2-14.amzn2.0.3.i686

src:
    libarchive-3.1.2-14.amzn2.0.3.src

x86_64:
    libarchive-3.1.2-14.amzn2.0.3.x86_64
    libarchive-devel-3.1.2-14.amzn2.0.3.x86_64
    bsdtar-3.1.2-14.amzn2.0.3.x86_64
    bsdcpio-3.1.2-14.amzn2.0.3.x86_64
    libarchive-debuginfo-3.1.2-14.amzn2.0.3.x86_64