SB2017030307 - Buffer overflow in libass
Published: March 3, 2017 Updated: July 28, 2020
Security Bulletin ID
SB2017030307
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2016-7970)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
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.
Remediation
Install update from vendor's website.
References
- http://www.openwall.com/lists/oss-security/2016/10/05/2
- http://www.securityfocus.com/bid/93358
- https://bugzilla.redhat.com/show_bug.cgi?id=1381960
- https://github.com/libass/libass/pull/240/commits/08e754612019ed84d1db0d1fc4f5798248decd75
- https://github.com/libass/libass/releases/tag/0.13.4
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KW6DNERYHPI5Y6SQYU3XKTVSCOWMIHUC/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R7JJ2SGVOX6UQQIRMVC3QACJLKHE2PYN/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VUOUOK3VULMMZTNSCRFCNPDAPDWAVK7X/
- https://security.gentoo.org/glsa/201702-25