SB2016012904 - Information disclosure in www.matroska libebml
Published: January 29, 2016 Updated: July 28, 2020
Security Bulletin ID
SB2016012904
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Information disclosure (CVE-ID: CVE-2015-8791)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
The EbmlElement::ReadCodedSizeValue function in libEBML before 1.3.3 allows context-dependent attackers to obtain sensitive information from process heap memory via a crafted length value in an EBML id, which triggers an invalid memory access.
Remediation
Install update from vendor's website.
References
- 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
- https://github.com/Matroska-Org/libebml/blob/release-1.3.3/ChangeLog
- https://github.com/Matroska-Org/libebml/commit/24e5cd7c666b1ddd85619d60486db0a5481c1b90