CVE-2017-17969

NameCVE-2017-17969
DescriptionHeap-based buffer overflow in the NCompress::NShrink::CDecoder::CodeReal method in 7-Zip before 18.00 and p7zip allows remote attackers to cause a denial of service (out-of-bounds write) or potentially execute arbitrary code via a crafted ZIP archive.
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-1268-1, DSA-4104-1
NVD severitymedium (attack range: remote)
Debian Bugs888297

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
p7zip (PTS)jessie (security), jessie9.20.1~dfsg.1-4.1+deb8u3fixed
stretch (security), stretch16.02+dfsg-3+deb9u1fixed
buster, sid16.02+dfsg-6fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
p7zipsource(unstable)16.02+dfsg-5medium888297
p7zipsourcejessie9.20.1~dfsg.1-4.1+deb8u3mediumDSA-4104-1
p7zipsourcestretch16.02+dfsg-3+deb9u1mediumDSA-4104-1
p7zipsourcewheezy9.20.1~dfsg.1-4+deb7u3mediumDLA-1268-1

Notes

https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/
Fixed in upstream 18.00-beta.

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