Denial of service in Freeware Advanced Audio Decoder

1) Out-of-bounds read

EUVDB-ID: #VU17323

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:U/RC:C]

CVE-ID: CVE-2019-6956

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

Exploit availability: No

Description

The vulnerability allows a local attacker to cause DoS condition.

The vulnerability exists due to a buffer over-read condition in the ps_mix_phase function, as defined in the libfaad/ps_dec.c source code file. A local attacker can submit a malicious input to the targeted system, trigger a buffer over-read condition and cause the affected application to crash.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address the vulnerability.

Vulnerable software versions

Freeware Advanced Audio Decoder: 2.0 - 2.8.1

External links

http://github.com/TeamSeri0us/pocs/blob/master/faad/global-buffer-overflow%40ps_mix_phase.md
http://sourceforge.net/p/faac/bugs/240/

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. However, proof of concept for this vulnerability is available.