#VU32312 Use-after-free in libebml - CVE-2015-8789
Published: January 29, 2016 / Updated: July 28, 2020
Vulnerability identifier: #VU32312
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2015-8789
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
libebml
libebml
Software vendor:
www.matroska.org
www.matroska.org
Description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when processing a "deeply nested element with infinite size" followed by another element of an upper level in an EBML document. <a href="http://cwe.mitre.org/data/definitions/416. A context-dependent attackers can have unspecified impact.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Remediation
Update to version 1.3.3.
External links
- http://lists.matroska.org/pipermail/matroska-users/2015-October/006985.html
- http://lists.opensuse.org/opensuse-updates/2016-01/msg00035.html
- http://www.debian.org/security/2016/dsa-3538
- http://www.securityfocus.com/bid/94924
- http://www.talosintelligence.com/reports/TALOS-2016-0037/
- https://github.com/Matroska-Org/libebml/blob/release-1.3.3/ChangeLog
- https://github.com/Matroska-Org/libebml/commit/88409e2a94dd3b40ff81d08bf6d92f486d036b24