CVE-2018-20199

moderate-risk
Published 2018-12-18

A NULL pointer dereference was discovered in ifilter_bank of libfaad/filtbank.c in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. The vulnerability causes a segmentation fault and application crash, which leads to denial of service because adding to windowed output is mishandled in the ONLY_LONG_SEQUENCE case.

Do I need to act?

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0.48% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (4)

Affected Vendors

Debian Audiocoding

References (10)

Exploit https://github.com/knik0/faad2/issues/24
Mailing List https://lists.debian.org/debian-lts-announce/2019/08/msg00033.html
Mailing List https://lists.debian.org/debian-lts-announce/2021/10/msg00020.html
Third Party Advisory https://security.gentoo.org/glsa/202006-17
Third Party Advisory https://www.debian.org/security/2022/dsa-5109
Exploit https://github.com/knik0/faad2/issues/24
Mailing List https://lists.debian.org/debian-lts-announce/2019/08/msg00033.html
Mailing List https://lists.debian.org/debian-lts-announce/2021/10/msg00020.html
Third Party Advisory https://security.gentoo.org/glsa/202006-17
Third Party Advisory https://www.debian.org/security/2022/dsa-5109
30
/ 100
moderate-risk
Severity 18/34 · Moderate
Exploitability 2/34 · Minimal
Exposure 10/34 · Low