CVE-2017-17969

high

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.

References

Advisories
More

https://www.debian.org/security/2018/dsa-4104

https://lists.debian.org/debian-lts-announce/2018/02/msg00003.html

https://usn.ubuntu.com/3913-1/

https://github.com/p7zip-project/p7zip/issues/7

https://0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html

http://www.securitytracker.com/id/1040831

Details

Source: Mitre, NVD

Published: 2018-01-30

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.02608