Integer underflow in x265 - CVE-2017-13666
Published: August 24, 2017 / Updated: August 8, 2020
Vulnerability identifier: #VU38430
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-13666
CWE-ID: CWE-191
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: x265.org
Affected software:
x265
x265
Detailed vulnerability description
The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.
An integer underflow vulnerability exists in pixel-a.asm, the x86 assembly code for planeClipAndMax() in MulticoreWare x265 through 2.5, as used in libbpg and other products. A small height value can cause an integer underflow, which leads to a crash. This is a different vulnerability than CVE-2017-8906.
How to mitigate CVE-2017-13666
Install update from vendor's website.