SAIL Library: Arbitrary Code Execution through Malicious Image Files

Summary

The SAIL library is susceptible to a serious security flaw when handling certain types of image files. An attacker can exploit this weakness by creating a specially crafted image file, potentially allowing them to execute malicious code on a system that uses the library. No fix is currently available for this issue, so affected users should consider alternative libraries or wait for a patch.

What to do

No fix is available yet. Check with your software vendor for updates.

Affected software

Vendor	Product	Affected versions	Fix available
sail	sail	<= 0.9.10	–

Original title

SAIL is a cross-platform library for loading and saving images with support for animation, metadata, and ICC profiles. All versions are vulnerable to Heap-based Buffer Overflow through the XWD pars...

Original description

SAIL is a cross-platform library for loading and saving images with support for animation, metadata, and ICC profiles. All versions are vulnerable to Heap-based Buffer Overflow through the XWD parser's use of the bytes_per_line value. The value os read directly from the file as the read size in io->strict_read(), and is never compared to the actual size of the destination buffer. An attacker can provide an XWD file with an arbitrarily large bytes_per_line, causing a massive write operation beyond the buffer heap allocated for the image pixels. The issue did not have a fix at the time of publication.

nvd CVSS3.1 9.8

Vulnerability type

CWE-122 Heap-based Buffer Overflow

https://github.com/HappySeaFox/sail/security/advisories/GHSA-3g38-x2pj-mv55 Exploit Vendor Advisory