Vulnerability identifier: #VU16634

Vulnerability 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-2018-20198

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Freeware Advanced Audio Decoder
Client/Desktop applications / Multimedia software

Vendor: Krzysztof Nikiel

Description

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

The vulnerability exists due to a NULL pointer dereference in ifilter_bank of libfaad/filtbank.c. A local attacker can submit trigger a segmentation fault that causes the affected software to crash, resulting in a DoS condition because adding to windowed output is mishandled in the LONG_START_SEQUENCE case.

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

Vulnerable software versions

Freeware Advanced Audio Decoder: 2.8.8

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External links
http://github.com/knik0/faad2/issues/23

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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.