RHSA-2025:10128 - Security Advisory

Topic

An update for python3 is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems.

Security Fix(es):

• cpython: Tarfile extracts filtered members when errorlevel=0 (CVE-2025-4435)
• cpython: Bypass extraction filter to modify file metadata outside extraction directory (CVE-2024-12718)
• cpython: Extraction filter bypass for linking outside extraction directory (CVE-2025-4330)
• python: cpython: Arbitrary writes via tarfile realpath overflow (CVE-2025-4517)
• cpython: python: Bypassing extraction filter to create symlinks to arbitrary targets outside extraction directory (CVE-2025-4138)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for ARM 64 8 aarch64

Fixes

• BZ - 2370010 - CVE-2025-4435 cpython: Tarfile extracts filtered members when errorlevel=0
• BZ - 2370013 - CVE-2024-12718 cpython: python: Bypass extraction filter to modify file metadata outside extraction directory
• BZ - 2370014 - CVE-2025-4330 cpython: python: Extraction filter bypass for linking outside extraction directory
• BZ - 2370016 - CVE-2025-4517 python: cpython: Arbitrary writes via tarfile realpath overflow
• BZ - 2372426 - CVE-2025-4138 cpython: python: Bypassing extraction filter to create symlinks to arbitrary targets outside extraction directory

CVEs

• CVE-2024-12718
• CVE-2025-4138
• CVE-2025-4330
• CVE-2025-4435
• CVE-2025-4517

References

• https://access.redhat.com/security/updates/classification/#important