Heap-based buffer overflow in ffmpeg (Alpine package)

1) Heap-based buffer overflow

EUVDB-ID: #VU29634

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-17542

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 within the vqa_decode_chunk because of an out-of-array access in vqa_decode_init in libavcodec/vqavideo.c. A remote attacker can create a specially crafted file, trick the victim into opening it, 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): 4.0.4-r0

CPE2.3

• cpe:2.3:o:alpine:ffmpeg_alpine_package:4.0.4-r0:*:*:*:*:alpine_linux:*:3.9

External links

https://git.alpinelinux.org/aports/commit/?id=228dc16f637162cbf1a241b4f1d71606ba5e8888
https://git.alpinelinux.org/aports/commit/?id=de8ecbcf01a07a78b3ef9f8970573d6e77803cd0
https://git.alpinelinux.org/aports/commit/?id=c0e9c2726f23f0410b383f030c4e2c8ab6b5090f

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.