Out-of-bounds read in ffmpeg (Alpine package)

1) Out-of-bounds read

EUVDB-ID: #VU14018

Risk: Low

CVSSv3.1: 6.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-13300

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to improper argument (AVCodecParameters) passed to the avpriv_request_sample function in the handle_eac3 function in libavformat/movenc.c. A remote attacker can supply specially crafted AVI file to MPEG4, trick the victim into converting it, trigger out-of-bounds read and cause the service to crash or possibly access arbitrary data

Mitigation

Install update from vendor's website.

Vulnerable software versions

ffmpeg (Alpine package): 3.4.2-r2 - 3.4.2-r3

CPE2.3

• cpe:2.3:o:alpine:ffmpeg_alpine_package:3.4.2-r3:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:ffmpeg_alpine_package:3.4.2-r2:*:*:*:*:alpine_linux:*:

External links

http://git.alpinelinux.org/aports/commit/?id=d8d38dabc6e30c901eb6bd6627d8337849d7c041
http://git.alpinelinux.org/aports/commit/?id=cf78a820406ae4481e937bc2fba252ff79c89a09
http://git.alpinelinux.org/aports/commit/?id=859fd99d06049c009c8b745626511cd681061a99
http://git.alpinelinux.org/aports/commit/?id=244b8239305a7fb24f4d98be5abb84bda770afe7
http://git.alpinelinux.org/aports/commit/?id=2a92300f12bdc3ed7fc960459e6b5a37868da059
http://git.alpinelinux.org/aports/commit/?id=67e1fa48160c4e435007390d685bdfacd84ea1f0

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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