Remote code execution in FFmpeg



Published: 2019-10-14 | Updated: 2020-07-10
Risk High
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2019-17539
CVE-2019-17542
CWE-ID CWE-476
CWE-122
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		FFmpeg
Universal components / Libraries / Libraries used by multiple products

Vendor ffmpeg.sourceforge.net

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) NULL pointer dereference

EUVDB-ID: #VU29633

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-17539

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a NULL pointer dereference error within the avcodec_open2 in libavcodec/utils.c in in FFmpeg. A remote attacker can pass specially crafted media content to the affected application and perform a denial of service (DoS) attack or execute arbitrary code on the system.

Successful exploitation of the vulnerability may allows an attacker to compromise the affected system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FFmpeg: 4.0 - 4.1.6

External links

http://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15733
http://github.com/FFmpeg/FFmpeg/commit/8df6884832ec413cf032dfaa45c23b1c7876670c
http://security.gentoo.org/glsa/202003-65
http://www.debian.org/security/2020/dsa-4722


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.

2) Heap-based buffer overflow

EUVDB-ID: #VU29634

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

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: 4.0 - 4.1.6

External links

http://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15919
http://github.com/FFmpeg/FFmpeg/commit/02f909dc24b1f05cfbba75077c7707b905e63cd2
http://lists.debian.org/debian-lts-announce/2019/12/msg00003.html
http://security.gentoo.org/glsa/202003-65
http://www.debian.org/security/2020/dsa-4722


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.



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