PT-2017-9435 · Libass+3 · Libsass+3

Andrej Nemec · Published 2016-10-12 · Updated 2022-05-04 · CVE-2016-7969

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions libass versions prior to 0.13.4

Description The issue allows remote attackers to cause a denial of service, specifically an out-of-bounds read, through unspecified vectors. This is related to "0/3 line wrapping equalization" in the wrap lines smart function in ass render.c.

Recommendations For versions prior to 0.13.4, update to version 0.13.4 or later to resolve the issue. As a temporary workaround, consider restricting access to the wrap lines smart function until a patch is available.

Fix

DoS

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

ALT-PU-2019-1158

CVE-2016-7969

DLA-668-1

MGASA-2016-0341

OPENSUSE-SU-2024:10508-1

SUSE-SU-2016:3107-1

SUSE-SU-2016_3107-1

USN-4797-1

Affected Products

Alt Linux

Suse

Ubuntu

Libsass

References · 35

• https://github.com/libass/libass/releases/tag/0.13.4 · Patch
• https://github.com/libass/libass/commit/f4f48950788b91c6a30029cc28a240b834713ea7 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2016-7969 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2016-7969 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2016-7969 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-7972 · Vendor Advisory
• http://lists.opensuse.org/opensuse-updates/2016-12/msg00068.html · Vendor Advisory
• https://osv.dev/vulnerability/USN-4797-1 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2016-7969 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KW6DNERYHPI5Y6SQYU3XKTVSCOWMIHUC · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7JJ2SGVOX6UQQIRMVC3QACJLKHE2PYN · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-7969 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-7969 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUOUOK3VULMMZTNSCRFCNPDAPDWAVK7X · Vendor Advisory
• https://advisories.mageia.org/MGASA-2016-0341.html · Security Note