Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support update for libwebp

Published: 2023-09-19 | Updated: 2023-09-27
Risk Critical
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-5129
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
Red Hat Enterprise Linux Server - AUS
Operating systems & Components / Operating system

libwebp (Red Hat package)
Operating systems & Components / Operating system package or component

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains one critical risk vulnerability.

1) Heap-based buffer overflow

EUVDB-ID: #VU80637

Risk: Critical


CVE-ID: CVE-2023-5129,CVE-2023-4863

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing WebP images within libwebp library. A remote attacker can trick the victim to visit a malicious website, 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. The vulnerability affects all modern browsers that support WebP image processing.

Note, the vulnerability is being actively exploited in the wild.


Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux Server - AUS: 8.4

libwebp (Red Hat package): before 1.0.0-7.el8_4.1

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?