CVE catalog
CVE-2020-24994
libass vulnerabilities
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.65% · Oct 25, 2026
Stack overflow in the parse_tag function in libass/ass_parse.c in libass before 0.15.0 allows remote attackers to cause a denial of service or remote code execution via a crafted file.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libass | sid | 1:0.17.5-1 | fixed |
| Debian | libass | forky | 1:0.17.5-1 | fixed |
| Debian | libass | trixie | 1:0.17.3-1+deb13u1 | fixed |
| Debian | libass | bookworm | 1:0.17.1-1 | fixed |
| Debian | libass | bookworm-security | 1:0.17.1-1+deb12u1 | fixed |
| Ubuntu | libass | noble | 1:0.15.0-1 | fixed |
| Ubuntu | libass | noble | 1:0.17.1-2ubuntu0.1~esm1 | fixed |
| Ubuntu | libass-dev | noble | 1:0.17.1-2ubuntu0.1~esm1 | fixed |
| Ubuntu | libass9 | noble | 1:0.17.1-2ubuntu0.1~esm1 | fixed |
| Ubuntu | libass | pro | 1:0.17.3-1 | vulnerable |
| Ubuntu | libass | pro | 1:0.17.4-2 | vulnerable |
| Ubuntu | libass | pro | 1:0.17.4-2ubuntu0.1~esm1 | fixed |
| Ubuntu | libass | pro | 1:0.14.0-2 | vulnerable |
| Ubuntu | libass | pro | 1:0.14.0-2ubuntu0.1~esm1 | fixed |
| Opensuse | libass | leap 15.2 | 0.14.0-lp152.4.6.1 | fixed |
| Opensuse | libass | leap 15.3 | 0.14.0-3.6.1 | fixed |
| Suse | libass | linux enterprise module for desktop applications 15 sp2 | 0.14.0-3.6.1 | fixed |
| Suse | libass | linux enterprise module for desktop applications 15 sp3 | 0.14.0-3.6.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libass | source | sid | 1:0.15.0-1 | not yet assigned | Not reported | Not reported |
| Debian | libass | source | forky | 1:0.15.0-1 | not yet assigned | Not reported | Not reported |
| Debian | libass | source | trixie | 1:0.15.0-1 | not yet assigned | Not reported | Not reported |
| Debian | libass | source | bookworm | 1:0.15.0-1 | not yet assigned | Not reported | Not reported |
| Ubuntu | libass | deb | noble | 1:0.15.0-1 | Not reported | Not reported | Not reported |
| Ubuntu | libass | deb | noble | 1:0.17.1-2ubuntu0.1~esm1 | Not reported | Not reported | Not reported |
| Ubuntu | libass-dev | deb | noble | 1:0.17.1-2ubuntu0.1~esm1 | Not reported | Not reported | Not reported |
| Ubuntu | libass9 | deb | noble | 1:0.17.1-2ubuntu0.1~esm1 | Not reported | Not reported | Not reported |
| Ubuntu | libass | deb | pro | 1:0.17.4-2ubuntu0.1~esm1 | Not reported | USN-8815-1 | Not reported |
| Ubuntu | libass | deb | pro | 1:0.14.0-2ubuntu0.1~esm1 | Not reported | UBUNTU-CVE-2020-24994 | Not reported |
| Opensuse | libass | rpm | leap 15.2 | 0.14.0-lp152.4.6.1 | Not reported | OPENSUSE-SU-2021:0773-1 | Not reported |
| Opensuse | libass | rpm | leap 15.3 | 0.14.0-3.6.1 | Not reported | OPENSUSE-SU-2021:1664-1 | Not reported |
| Suse | libass | rpm | linux enterprise module for desktop applications 15 sp2 | 0.14.0-3.6.1 | Not reported | SUSE-SU-2021:1664-1 | Not reported |
| Suse | libass | rpm | linux enterprise module for desktop applications 15 sp3 | 0.14.0-3.6.1 | Not reported | SUSE-SU-2021:1664-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libass9]Fixed
Source package: [libass]
Details (2)
1:0.17.1-1· amd64 · bookwormFixed · Fixed:
1:0.15.0-1usn · libass · debian · bookworm; usn · libass · debian · 12
1:0.17.1-1· arm64 · bookwormFixed · Fixed:
1:0.15.0-1usn · libass · debian · bookworm; usn · libass · debian · 12
- [libass-dev]Fixed
Source package: [libass]
Details (2)
1:0.17.1-1· amd64 · bookwormFixed · Fixed:
1:0.15.0-1usn · libass · debian · bookworm; usn · libass · debian · 12
1:0.17.1-1· arm64 · bookwormFixed · Fixed:
1:0.15.0-1usn · libass · debian · bookworm; usn · libass · debian · 12
[Debian 13 (Trixie)]
- [libass9]Fixed
Source package: [libass]
Details (2)
1:0.17.3-1+deb13u1· amd64 · trixieFixed · Fixed:
1:0.15.0-1usn · libass · debian · 13
1:0.17.3-1+deb13u1· arm64 · trixieFixed · Fixed:
1:0.15.0-1usn · libass · debian · 13
- [libass-dev]Fixed
Source package: [libass]
Details (2)
1:0.17.3-1+deb13u1· amd64 · trixieFixed · Fixed:
1:0.15.0-1usn · libass · debian · 13
1:0.17.3-1+deb13u1· arm64 · trixieFixed · Fixed:
1:0.15.0-1usn · libass · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2021_1664-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-24994]
- [https://osv.dev/vulnerability/SUSE-SU-2021:1664-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2020-24994]
- [https://osv.dev/vulnerability/USN-8815-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2021:0773-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2021:1664-1]
- [https://security-tracker.debian.org/tracker/CVE-2020-24994]
- [https://ubuntu.com/security/notices/USN-8815-1]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]