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CVE-2016-9296

Published: 12 November 2016

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.

Notes

AuthorNote
sbeattie
crasher example is in sourceforge bug report

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
p7zip
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Not vulnerable
(16.02+dfsg-6)
precise Ignored
(end of life)
trusty Not vulnerable
(code not present)
upstream
Released (16.02+dfsg-2)
xenial Not vulnerable
(code not present)
yakkety Ignored
(end of life)
zesty Ignored
(end of life)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H