CVE-2017-17969

Name: CVE-2017-17969
Creator: NVD / NIST
Published: 2018-01-30T16:29:00.217+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 5.03%

Last modified Jun 17, 2026

CVE-2017-17969 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 5.03% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

5.03%

91.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
7-Zip	7-Zip	< 18.00
7-Zip	P7zip	< 18.0
Debian	Debian Linux	7.0
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0

References

http://www.securitytracker.com/id/1040831
https://0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html
https://github.com/p7zip-project/p7zip/issues/7
https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/Exploit, Technical Description, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/02/msg00003.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3913-1/
https://www.debian.org/security/2018/dsa-4104Third Party Advisory
http://www.securitytracker.com/id/1040831
https://0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html
https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/Exploit, Technical Description, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/02/msg00003.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3913-1/
https://www.debian.org/security/2018/dsa-4104Third Party Advisory

Timeline

Published: Jan 30, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-17969?

How severe is CVE-2017-17969?

Severity scoring for CVE-2017-17969 is pending analysis. The EPSS model estimates a 5.03% probability of exploitation in the next 30 days.

How do I fix CVE-2017-17969?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-17969?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST