Vulnerability Details : CVE-2016-9296
Potential exploit
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.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2016-9296
- cpe:2.3:a:7-zip:p7zip:16.02:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-9296
1.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 75 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-9296
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2016-9296
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-9296
-
https://github.com/yangke/7zip-null-pointer-dereference
GitHub - yangke/7zip-null-pointer-dereference: This repository is for CVE bug report of p7zip onlyIssue Tracking;Patch;Third Party Advisory
-
http://www.securityfocus.com/bid/94294
p7zip Null Pointer Dereference CVE-2016-9296 Denial of Service VulnerabilityThird Party Advisory;VDB Entry
-
https://sourceforge.net/p/p7zip/discussion/383043/thread/648d34db/
p7zip / Discussion / Open Discussion:A Null Pointer Dereference Bug of p7zip(including the latest p7zip_16.02)Exploit;Third Party Advisory
-
https://sourceforge.net/p/p7zip/bugs/185/
p7zip / Bugs / #185 null pointer access / segfault in NArchive::N7z::CInArchive::ReadAndDecodePackedStreamsIssue Tracking;Third Party Advisory
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