CVE-2018-20194

NameCVE-2018-20194
DescriptionThere is a stack-based buffer underflow in the third instance of the calculate_gain function in libfaad/sbr_hfadj.c in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. A crafted input will lead to a denial of service or possibly unspecified other impact because limiting the additional noise energy level is mishandled for the G_max <= G case.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-1791-1, DSA-4522-1
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
faad2 (PTS)jessie2.7-8+deb8u1vulnerable
jessie (security)2.7-8+deb8u3fixed
stretch2.8.0~cvs20161113-1+deb9u1vulnerable
stretch (security)2.8.0~cvs20161113-1+deb9u2fixed
buster2.8.8-3fixed
bullseye, sid2.9.0-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
faad2source(unstable)2.8.8-2medium
faad2sourcejessie2.7-8+deb8u2mediumDLA-1791-1
faad2sourcestretch2.8.0~cvs20161113-1+deb9u2mediumDSA-4522-1

Notes

https://github.com/knik0/faad2/issues/21
https://github.com/knik0/faad2/commit/6b4a7cde30f2e2c

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