Vulnerability Description
libass 0.15.x before 0.15.1 has a heap-based buffer overflow in decode_chars (called from decode_font and process_text) because the wrong integer data type is used for subtraction.
CVSS Score
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Libass Project | Libass | >= 0.15.0, < 0.15.1 |
| Fedoraproject | Fedora | 34 |
Related Weaknesses (CWE)
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26674Issue TrackingPatchThird Party Advisory
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libass/OSV-2020-2099.yaThird Party Advisory
- https://github.com/libass/libass/commit/017137471d0043e0321e377ed8da48e45a3ec632PatchThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202208-13Third Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26674Issue TrackingPatchThird Party Advisory
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libass/OSV-2020-2099.yaThird Party Advisory
- https://github.com/libass/libass/commit/017137471d0043e0321e377ed8da48e45a3ec632PatchThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202208-13Third Party Advisory
FAQ
What is CVE-2020-36430?
CVE-2020-36430 is a vulnerability with a CVSS score of 7.8 (HIGH). libass 0.15.x before 0.15.1 has a heap-based buffer overflow in decode_chars (called from decode_font and process_text) because the wrong integer data type is used for subtraction.
How severe is CVE-2020-36430?
CVE-2020-36430 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-36430?
Check the references section above for vendor advisories and patch information. Affected products include: Libass Project Libass, Fedoraproject Fedora.