Denial of service in FFmpeg

1) Assertion failure

EUVDB-ID: #VU14532

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-15822

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

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

The vulnerability exists due to insufficient checks for an empty audio packet by the flv_write_packet function, as defined in the libavformat/flvenc.c source code file. A local attacker can access the system and execute a specially crafted application that submits malicious input to trigger an assertion failure and cause the service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FFmpeg: 2.0 - 4.0.2

External links

http://github.com/FFmpeg/FFmpeg/commit/6b67d7f05918f7a1ee8fc6ff21355d7e8736aa10

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.