Vulnerability Monitor

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CVE-2016-9296

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.

Published

2016-11-12T02:59:04.650

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-476

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	7-zip	p7zip	16.02	Yes

References

http://www.securityfocus.com/bid/94294 Third Party Advisory, VDB Entry ([email protected])
https://github.com/yangke/7zip-null-pointer-dereference Issue Tracking, Patch, Third Party Advisory ([email protected])
https://sourceforge.net/p/p7zip/bugs/185/ Issue Tracking, Third Party Advisory ([email protected])
https://sourceforge.net/p/p7zip/discussion/383043/thread/648d34db/ Exploit, Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/94294 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/yangke/7zip-null-pointer-dereference Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://sourceforge.net/p/p7zip/bugs/185/ Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://sourceforge.net/p/p7zip/discussion/383043/thread/648d34db/ Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)