cve/2016/CVE-2016-9296.md

CVE-2016-9296

Description

A null pointer dereference bug affects the 16.02 and many old versions of p7zip. A lack of null pointer check for the variable folders.PackPositions in function CInArchive::ReadAndDecodePackedStreams in CPP/7zip/Archive/7z/7zIn.cpp, as used in the 7z.so library and in 7z applications, will cause a crash and a denial of service when decoding malformed 7z files.

POC

Reference

• https://github.com/yangke/7zip-null-pointer-dereference
• https://sourceforge.net/p/p7zip/discussion/383043/thread/648d34db/

Github

• https://github.com/andir/nixos-issue-db-example
• https://github.com/yangke/7zip-null-pointer-dereference