Vulnerability Description
QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain downstream write fails.
CVSS Score
5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Qpdf Project | Qpdf | >= 9.0.0, <= 9.1.1 |
Related Weaknesses (CWE)
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28262PatchThird Party Advisory
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qpdf/OSV-2020-2245.yamlThird Party Advisory
- https://github.com/qpdf/qpdf/commit/dc92574c10f3e2516ec6445b88c5d584f40df4e5PatchThird Party Advisory
- https://github.com/qpdf/qpdf/issues/492
- https://lists.debian.org/debian-lts-announce/2023/08/msg00037.html
- https://security.gentoo.org/glsa/202401-20
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28262PatchThird Party Advisory
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qpdf/OSV-2020-2245.yamlThird Party Advisory
- https://github.com/qpdf/qpdf/commit/dc92574c10f3e2516ec6445b88c5d584f40df4e5PatchThird Party Advisory
- https://github.com/qpdf/qpdf/issues/492
- https://lists.debian.org/debian-lts-announce/2023/08/msg00037.html
- https://security.gentoo.org/glsa/202401-20
FAQ
What is CVE-2021-36978?
CVE-2021-36978 is a vulnerability with a CVSS score of 5.5 (MEDIUM). QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain downstream write fails...
How severe is CVE-2021-36978?
CVE-2021-36978 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-36978?
Check the references section above for vendor advisories and patch information. Affected products include: Qpdf Project Qpdf.