CVE-2025-53367

Description

DjVuLibre is a GPL implementation of DjVu, a web-centric format for distributing documents and images. Prior to version 3.5.29, the MMRDecoder::scanruns method is affected by an OOB-write vulnerability, because it does not check that the xr pointer stays within the bounds of the allocated buffer. This can lead to writes beyond the allocated memory, resulting in a heap corruption condition. An out-of-bounds read with pr is also possible for the same reason. This issue has been patched in version 3.5.29.

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

CWE-787 Out-of-bounds Write

References

Other References

https://github.blog/security/vulnerability-research/cve-2025-53367-an-exploitable-out-of-bounds-write-in-djvulibre https://github.com/github/securitylab/tree/main/SecurityExploits/DjVuLibre/MMRDecoder_scanruns_CVE-2025-53367 https://securitylab.github.com/advisories/GHSL-2025-055_DjVuLibre/ https://sourceforge.net/p/djvu/djvulibre-git/ci/33f645196593d70bd5e37f55b63886c31c82c3da https://www.openwall.com/lists/oss-security/2025/07/03/1 http://www.openwall.com/lists/oss-security/2025/07/03/1 http://www.openwall.com/lists/oss-security/2025/07/18/3 https://lists.debian.org/debian-lts-announce/2025/07/msg00007.html https://github.blog/security/vulnerability-research/cve-2025-53367-an-exploitable-out-of-bounds-write-in-djvulibre/

Frequently Asked Questions

What is CVE-2025-53367? +

DjVuLibre is a GPL implementation of DjVu, a web-centric format for distributing documents and images. Prior to version 3.5.29, the MMRDecoder::scanruns method is affected by an OOB-write vulnerability, because it does not check that the xr pointer stays within the bounds of the allocated buffer. This can lead to writes beyond the allocated memory, resulting in a heap corruption condition. An out-of-bounds read with pr is also possible for the same reason. This issue has been patched in version 3.5.29.

How do I check if I'm vulnerable to CVE-2025-53367? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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