CVE-2020-36430 — Out-of-bounds Write in Project Libass

CWE-787 — Out-of-bounds Write4 documents4 sources
Severity
7.8HIGHNVD
EPSS
0.3%
top 45.70%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Libass Project LibassDebian LibassFedoraproject Fedora
Timeline
PublishedJul 20
Latest updateMay 24

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 vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages3 packages

▶debiandebian/libass< libass 1:0.15.0-2 (bookworm)
▶NVDlibass_project/libass0.15.0 — 0.15.1
▶Debianlibass_project/libass< 1:0.15.0-2+3

Also affects: Fedora 34

Patches

Patch: bugs.chromium.org ↗Patch: github.com ↗Patch: bugs.chromium.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-pqvw-6c6x-gvwh: libass 0↗2022-05-24
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OSV
CVE-2020-36430: libass 0↗2021-07-20
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📋Vendor Advisories

1
Debian
CVE-2020-36430: libass - libass 0.15.x before 0.15.1 has a heap-based buffer overflow in decode_chars (ca...↗2020
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