Buffer overflow in the calc_coeff function in libass/ass_blur.c in libass before 0.13.4 allows remote attackers to cause a denial of service via unspecified vectors.

The remote Ubuntu 16.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4797-1 advisory.

    It was discovered that LibASS incorrectly handled certain ASS files. A remote attacker could possibly use     this issue to cause a denial of service. One of the issues, CVE-2016-7970, only affected Ubuntu 16.04 ESM.
    (CVE-2016-7969, CVE-2016-7970, CVE-2016-7972)

    It was discovered that LibASS incorrectly handled parsing operations for specific nested character     strings. An attacker could possibly use this issue to cause a denial of service. This issue was only fixed     in Ubuntu 16.04 LTS. (CVE-2020-24994)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote host is affected by the vulnerability described in GLSA-201702-25 (libass: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in libass. Please review       the CVE identifiers referenced below for details.
  Impact :

    A remote attacker could cause a Denial of Service condition or other       unknown impacts via unknown attack vectors.
  Workaround :

    There is no known workaround at this time.

This update for libass fixes the following issues: CVE-2016-7969, CVE-2016-7970, CVE-2016-7971, CVE-2016-7972: Fixed multiple memory allocation issues found by fuzzing (bsc#1002982).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Fixes CVE-2016-7969, CVE-2016-7970 and CVE-2016-7972

----

Update to 0.13.3.

Contains various bugfixes.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
183548	Ubuntu 16.04 ESM : LibASS vulnerabilities (USN-4797-1)	Nessus	Ubuntu Local Security Checks	high
97268	GLSA-201702-25 : libass: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
95798	SUSE SLED12 / SLES12 Security Update : libass (SUSE-SU-2016:3107-1)	Nessus	SuSE Local Security Checks	high
94865	Fedora 25 : libass (2016-d2a05a0644)	Nessus	Fedora Local Security Checks	high
94487	Fedora 23 : libass (2016-95407a836f)	Nessus	Fedora Local Security Checks	high
94235	Fedora 24 : libass (2016-282507c3e9)	Nessus	Fedora Local Security Checks	high

Detections

Analytics

CVE-2016-7970

high

Tenable Plugins

high

high

high

high

high

high