CVE-2017-9870

NameCVE-2017-9870
DescriptionThe III_i_stereo function in layer3.c in mpglib, as used in libmpgdecoder.a in LAME 3.99.5 and other products, allows remote attackers to cause a denial of service (buffer over-read and application crash) via a crafted audio file that is mishandled in the code for the "block_type == 2" case, a similar issue to CVE-2017-11126.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)
Debian Bugs867725

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
lame (PTS)wheezy3.99.5+repack1-3+deb7u1vulnerable
jessie3.99.5+repack1-7+deb8u1vulnerable
stretch3.99.5+repack1-9fixed
buster, sid3.100-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
lamesource(unstable)3.99.5+repack1-8medium867725

Notes

[jessie] - lame <no-dsa> (Minor issue)
https://blogs.gentoo.org/ago/2017/06/17/lame-global-buffer-overflow-in-iii_i_stereo-layer3-c/
https://sourceforge.net/p/lame/bugs/481/
Starting with 3.99.5+repack1-8 libsndfile is used to read the input file, marking that as the fixed
version, although the internal lame code was only fixed in 3.100 (strictly speaking that would be
severity:unimportant for stretch onwards, but we don't have suite-specific severity annotations

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