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.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2020-24994)

Note that Nessus relies on the presence of the package as reported by the vendor.

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 SUSE Linux SUSE15 host has packages installed that are affected by a vulnerability as referenced in the openSUSE-SU-2021:1664-1 advisory.

  - 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. (CVE-2020-24994)

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

This update for libass fixes the following issues :

  - CVE-2020-24994: Fixed a stack overflow in the parse_tag     (bsc#1184153).

This update was imported from the SUSE:SLE-15:Update update project.

This update for libass fixes the following issues :

CVE-2020-24994: Fixed a stack overflow in the parse_tag (bsc#1184153).

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.

ID	Name	Product	Family	Severity
250416	Linux Distros Unpatched Vulnerability : CVE-2020-24994	Nessus	Misc.	high
183548	Ubuntu 16.04 ESM : LibASS vulnerabilities (USN-4797-1)	Nessus	Ubuntu Local Security Checks	high
151712	openSUSE 15 Security Update : libass (openSUSE-SU-2021:1664-1)	Nessus	SuSE Local Security Checks	high
149894	openSUSE Security Update : libass (openSUSE-2021-773)	Nessus	SuSE Local Security Checks	high
149856	SUSE SLED15 / SLES15 Security Update : libass (SUSE-SU-2021:1664-1)	Nessus	SuSE Local Security Checks	high

Detections

Analytics

CVE-2020-24994

high

Tenable Plugins

high

high

high

high

high