Addressing the critical heap buffer overflow vulnerability in libwebp (CVE-2023-5217)

A critical vulnerability known as heap buffer overflow was identified in libwebp, a library maintained by Google, in versions prior to 1.3.2. This vulnerability is a severe security risk that could allow attackers to execute arbitrary code on affected systems.

The flaw has significant implications, especially for software projects using older versions of libwebp for image processing. Exploits of this vulnerability are already observed in the wild, affecting major platforms like Google Chrome and Apple products. Because this vulnerability affects a popular library, many projects might be impacted without the developers being aware.

Google addressed this vulnerability in libwebp version 1.3.2, making this update critical for any public-facing product or platform.

For software projects, the immediate course of action should be to inspect the version of libwebp in use and update it to libwebp 1.3.2 or later. The update can be found on the official GitHub release page.

Moreover, it’s advised to conduct a security review to ensure no other vulnerabilities exist and to maintain an updated library to prevent future security threats.

This incident and the recent Log4j zero day exploit serve as a reminder of the importance of keeping third-party libraries up-to-date. This prevents exploitation and ensures the overall security and integrity of software projects.

For further understanding and assistance regarding this vulnerability and its implications, please reach out to us. Additionally, you may find in-depth information regarding the libwebp vulnerability in this detailed article by Tesorion.


  • Security & Compliance

Written by

Rinie Huijgen

Rinie Huijgen

CTO at Intercept

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