Heap-based Buffer Overflow Affecting libvips package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CONAN-LIBVIPS-10078604
- published8 May 2025
- disclosed7 Apr 2025
- creditUnknown
Introduced: 7 Apr 2025
CVE-2025-29769 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow via the heifsave operation which could incorrectly determine the presence of an alpha channel in an input when it was not possible to determine the colour interpretation, known internally within libvips as multiband. An attacker can crash the process by providing a well-crafted TIFF image with 4 channels when HEIF-based output is requested, leading to an attempt to write 4 channels of data into a 3 channel HEIF image, causing a heap buffer overflow.
Workaround
This can be mitigated by blocking the VipsForeignSaveHeif operation via vips_operation_block_set, which is available in most language bindings.