CVE-2017-17969: 7-zip Out-of-bounds Write
CVSS: 7.8v3.0HighModified
AliasesALPINE-CVE-2017-17969MGASA-2018-0123UBUNTU-CVE-2017-17969DEBIAN-CVE-2017-17969DLA-1268-1DSA-4104-1
Published 30-01-2018Last modified 10-01-2025
Vulnerability summary
CVE-2017-17969 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in 7-zip. EPSS estimates a 4.99% chance of exploitation in the next 30 days, higher than 92.1% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.8/10
010
High · v3.0 (NVD)EPSS score
4.99%
0%100%
Low · +0.05 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 3 · Related 3Timeline
- 30-01-2018PublishedVulnerability first disclosed.
- 10-01-2025Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 4 sources · 2 versionsHigh 7.8Preferred score · NVD (NIST)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 4 agree
- OSV · AlpineEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
4.99%
Chance of exploitation in the next 30 days
Percentile
92%
Versus all other CVEs
30-day change
+0.05 pp
From 4.94% on 20-09-2026
20-09-202620-10-2026
EPSS score4.99%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (landave.io)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian2 products
- p7zip< 16.02+dfsg-5 | < 9.20.1~dfsg.1-4.1+deb8u3 | < 16.02+dfsg-3+deb9u1 | < 9.20.1~dfsg.1-4+deb7u3
- debian_linuxEOL7.0 | 8.0 | 9.0
Alpine1 product
- p7zip< 16.02-r2
Mageia1 product
- p7zip< 16.02-2.1.mga6
Ubuntu1 product
- p7zip< 9.20.1~dfsg.1-4+deb7u3build0.14.04.1 | < 9.20.1~dfsg.1-4.2ubuntu0.1
5 vendors · 7 products
References
15 links
- landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/ExploitTechnical DescriptionThird Party AdvisoryREPORT
- www.securitytracker.com/id/1040831VDB Entry
- usn.ubuntu.com/3913-1/Vendor Advisory
