CVE-2017-17969

moderate-risk
Published 2018-01-30

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.

Do I need to act?

~
2.5% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (5)

P7Zip

Affected Vendors

Debian 7-Zip

References (13)

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
Exploit https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/
Mailing List https://lists.debian.org/debian-lts-announce/2018/02/msg00003.html
https://usn.ubuntu.com/3913-1/
Third Party Advisory https://www.debian.org/security/2018/dsa-4104
http://www.securitytracker.com/id/1040831
https://0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html
Exploit https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/
Mailing List https://lists.debian.org/debian-lts-announce/2018/02/msg00003.html
https://usn.ubuntu.com/3913-1/
Third Party Advisory https://www.debian.org/security/2018/dsa-4104
42
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 6/34 · Minimal
Exposure 12/34 · Low