PT-2020-16484 · Libass+3 · Libsass+3

Mrsmile + 1 · Published 2020-09-26 · Updated 2022-06-15 · CVE-2020-26682

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions libass version 0.14.0

Description The issue is caused by a signed integer overflow in the ass outline construct function's call to outline stroke.

Recommendations For libass version 0.14.0, consider disabling the ass outline construct function or restricting its use until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

ALT-PU-2020-3253

ALT-PU-2020-3292

ALT-PU-2021-2147

BDU:2025-03973

CVE-2020-26682

MGASA-2021-0017

OPENSUSE-SU-2021:0472-1

OPENSUSE-SU-2021_0472-1

SUSE-SU-2021:0936-1

SUSE-SU-2021_0936-1

Affected Products

Alt Linux

Astra Linux

Suse

Libsass

References · 29

• 🔥 https://github.com/libass/libass/issues/431 · Exploit
• 🔥 http://openwall.com/lists/oss-security/2020/11/19/7 · Exploit
• https://cve.org/CVERecord?id=CVE-2020-26682 · Security Note
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2025-0422SE62 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:0472-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-26682 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2020-26682 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-26682 · Security Note
• https://security.gentoo.org/glsa/202012-12 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2021-0017.html · Security Note
• https://osv.dev/vulnerability/MGASA-2021-0017 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-26682 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-26682 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-03973 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2021:0936-1 · Vendor Advisory