CVE-2018-20199

MEDIUM
5.5
CVSS Score
Published: December 18, 2018 at 01:00 AM UTC
Updated: June 17, 2026 at 01:52 AM UTC
2 products affected across 2 vendorsDebian LinuxFreeware Advanced Audio Decoder 2

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Severity
MEDIUM5.5
Exploit prediction
EPSS 1%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.9.0
Affected range stops below 2.9.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (5)

x_refsource_MISCExploitThird Party Advisory
https://github.com/knik0/faad2/issues/24
Mailing Listx_refsource_MLISTThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/08/msg00033.html
Mailing Listx_refsource_MLISTThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00020.html
Vendor Advisoryx_refsource_GENTOOThird Party Advisory
https://security.gentoo.org/glsa/202006-17
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
https://www.debian.org/security/2022/dsa-5109

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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