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Vulnerability DatabaseCVE-2022-27938

CVE-2022-27938: 
NixOS vulnerability analysis and mitigation

Overview

CVE-2022-27938 affects stbimage.h (also known as the stb image loader) version 2.19, which is utilized in libsixel and other products. The vulnerability was discovered and disclosed on March 26, 2022, and involves a reachable assertion in the stbi_createpngimage_raw function (NVD, MITRE).

Technical details

The vulnerability exists in the stbi_createpngimageraw function of stbimage.h version 2.19. When processing certain PNG images, the function can trigger an assertion failure with the message 'imgwidthbytes <= x' at line 4374 of stbimage.h. This issue was identified during testing with Address Sanitizer (ASan) enabled (GitHub Issue).

Impact

The vulnerability has been classified as having negligible security impact, primarily affecting the availability of applications using the affected library. When triggered, it causes an assertion failure that leads to program termination (Debian Security).

Mitigation and workarounds

The vulnerability affects multiple versions of packages using stb_image.h, including various Debian distributions. As of the latest reports, some distributions remain vulnerable, including Debian bullseye, bookworm, and sid (Debian Security).

Additional resources

Source: This report was generated using AI

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