CVE-2016-9296 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://www.securityfocus.com/bid/94294 https://github.com/yangke/7zip-null-pointer-dereference https://sourceforge.net/p/p7zip/bugs/185/ https://sourceforge.net/p/p7zip/discussion/383043/thread/648d34db/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5