Out-of-bounds read in ffmpeg.sourceforge.net FFmpeg

1) Out-of-bounds read

EUVDB-ID: #VU32148

Risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-7502

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local non-authenticated attacker to execute arbitrary code.

The cavs_idct8_add_c function in libavcodec/cavsdsp.c in FFmpeg before 3.1.4 is vulnerable to reading out-of-bounds memory when decoding with cavs_decode.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FFmpeg: 3.1.0 - 3.1.3

CPE2.3

• cpe:2.3:a:ffmpeg_sourceforge_net:ffmpeg:3.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:ffmpeg_sourceforge_net:ffmpeg:3.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:ffmpeg_sourceforge_net:ffmpeg:3.1.2:*:*:*:*:*:*:*

External links

https://www.openwall.com/lists/oss-security/2016/10/08/1
https://www.securityfocus.com/bid/94834
https://security.gentoo.org/glsa/201701-71

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.