Buffer overflow in 7-Zip
CVE-2017-17969
Heap-based buffer overflow in the NCompress::NShrink::CDecoder::CodeReal method in 7-Zip before 18.00 and p7zip allows remote attackers to cause a denial of service (out-of-bounds write) or potentially execute arbitrary code via a crafted ZIP archive.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.049 (91.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.049 · newest: 0.049 · change: 0.000
Affected products
- 7-Zip
- 7-Zip P7zip
- Debian Linux — versions 7.0, 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.debian.org/security/2018/dsa-4104 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/02/msg00003.html (mailing-list, Mailing List, Third Party Advisory)
- landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/ (Technical Description, Exploit, Third Party Advisory)
- www.securitytracker.com/id/1040831 (vdb-entry)
- 0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html
- usn.ubuntu.com/3913-1/ (vendor-advisory)
- github.com/p7zip-project/p7zip/issues/7
Frequently asked questions
- What is CVE-2017-17969?
- CVE-2017-17969 is a high-severity vulnerability in 7-Zip, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2018-01-30.
- How severe is CVE-2017-17969?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2017-17969 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.