#VU33379 NULL pointer dereference - CVE-2018-19504

Vulnerability identifier: #VU33379

Vulnerability risk: Medium

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-19504

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.1. There is a NULL pointer dereference in ifilter_bank() in libfaad/filtbank.c. A remote attacker can perform a denial of service (DoS) attack.

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

External links
https://github.com/TeamSeri0us/pocs/tree/master/faad
https://seclists.org/bugtraq/2019/Sep/28
https://security.gentoo.org/glsa/202006-17
https://sourceforge.net/p/faac/bugs/240/
https://www.debian.org/security/2019/dsa-4522

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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.