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GLSA-202208-13 : libass: Denial of service

high Nessus Plugin ID 163983

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Description

The remote host is affected by the vulnerability described in GLSA-202208-13 (libass: Denial of service)

 - 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. (CVE-2020-36430)

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

Solution

All libass users should upgrade to the latest version:

 # emerge --sync # emerge --ask --oneshot --verbose >=media-libs/libass-0.15.1

See Also

https://security.gentoo.org/glsa/202208-13

https://bugs.gentoo.org/show_bug.cgi?id=803119

Plugin Details

Severity: High

ID: 163983

File Name: gentoo_GLSA-202208-13.nasl

Version: 1.2

Type: local

Published: 8/10/2022

Updated: 8/10/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2020-36430

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:libass, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Ease: No known exploits are available

Patch Publication Date: 8/10/2022

Vulnerability Publication Date: 7/20/2021

Reference Information

CVE: CVE-2020-36430