Heap-based buffer overflow in ffmpeg (Alpine package)

1) Heap-based buffer overflow

EUVDB-ID: #VU32059

Risk: Medium

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:Green]

CVE-ID: CVE-2017-9996

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in The cdxl_decode_frame function in libavcodec/cdxl.c in FFmpeg 2.8.x before 2.8.12, 3.0.x before 3.0.8, 3.1.x before 3.1.8, 3.2.x before 3.2.5, and 3.3.x before 3.3.1 does not exclude the CHUNKY format, which. A remote attacker can use a crafted file. to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ffmpeg (Alpine package): 2.8.3-r0 - 3.1.7-r0

ffmpeg (Alpine package):

CPE2.3

• cpe:2.3:a:alpine:ffmpeg_alpine_package:2.8.3-r0:*:*:*:*:alpine_linux:*:3.2
• cpe:2.3:a:alpine:ffmpeg_alpine_package:2.8.5-r0:*:*:*:*:alpine_linux:*:3.2
• cpe:2.3:a:alpine:ffmpeg_alpine_package:2.8.11-r0:*:*:*:*:alpine_linux:*:3.3
• cpe:2.3:a:alpine:ffmpeg_alpine_package::*:*:*:*:alpine_linux:*:*

External links

https://git.alpinelinux.org/aports/commit/?id=beb6c402470c5f9bc5bcd17d8b57bfbd52785ec6
https://git.alpinelinux.org/aports/commit/?id=48e351c55b295e4281b7bc1b8a0223bc878c1bf3
https://git.alpinelinux.org/aports/commit/?id=1012b905bec72936b78cbe2de9cff631fc0b695b

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.