High severity · published Nov 12, 2016
CVE-2016-9296
A null pointer dereference bug affects the 16.02 and many old versions of p7zip
7.5
CVSS
7%
EPSS
No
On KEV
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
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)7.0% · higher than 94% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
P7
P7zip · 7-zip
16.02 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-9296
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-9296
Third Party Advisory
http://www.securityfocus.com/bid/94294
Issue Tracking
https://github.com/yangke/7zip-null-pointer-dereference
Issue Tracking
https://sourceforge.net/p/p7zip/bugs/185/
Exploit
https://sourceforge.net/p/p7zip/discussion/383043/thread/648d34db/
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