NULL pointer dereference in 7-Zip P7zip
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 · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.070 (94.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.070 · newest: 0.070 · change: 0.000
Affected products
- 7-Zip P7zip — versions 16.02
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/94294 (VDB Entry, Third Party Advisory, vdb-entry)
- sourceforge.net/p/p7zip/bugs/185/ (Third Party Advisory, Issue Tracking)
- sourceforge.net/p/p7zip/discussion/383043/thread/648d34db/ (Exploit, Third Party Advisory)
- github.com/yangke/7zip-null-pointer-dereference (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2016-9296?
- CVE-2016-9296 is a high-severity vulnerability in 7-Zip P7zip, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2016-11-12.
- How severe is CVE-2016-9296?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-9296 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.