Buffer overflow in 7-Zip
CVE-2016-2335
The CInArchive::ReadFileItem method in Archive/Udf/UdfIn.cpp in 7zip 9.20 and 15.05 beta and p7zip allows remote attackers to cause a denial of service (out-of-bounds read) or execute arbitrary code via the PartitionRef field in the Long Allocation Descriptor in a UDF file.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.098 (95.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.098 · newest: 0.098 · change: 0.000
Affected products
- 7-Zip — versions 9.20, 15.05
- Debian Linux — versions 8.0, 9.0
- openSUSE — versions 13.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.opensuse.org/opensuse-updates/2016-07/msg00069.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.opensuse.org/opensuse-updates/2016-06/msg00004.html (vendor-advisory, Mailing List, Third Party Advisory)
- blog.talosintel.com/2016/05/multiple-7-zip-vulnerabilities.html (Exploit, Third Party Advisory)
- www.securityfocus.com/bid/90531 (VDB Entry, Third Party Advisory, vdb-entry)
- security.gentoo.org/glsa/201701-27 (vendor-advisory, Third Party Advisory)
- www.securitytracker.com/id/1035876 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.opensuse.org/opensuse-updates/2016-06/msg00098.html (vendor-advisory, Mailing List, Third Party Advisory)
- www.talosintel.com/reports/TALOS-2016-0094/ (Exploit, Third Party Advisory)
- www.debian.org/security/2016/dsa-3599 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-2335?
- CVE-2016-2335 is a high-severity vulnerability in 7-Zip, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2016-06-07.
- How severe is CVE-2016-2335?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2016-2335 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.