CVE-2017-17969

Public Exploit

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.

Category

7.8
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 3.12% Top 15%
Vendor Advisory debian.org Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.debian.org/security/2018/dsa-4104 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2018/02/msg00003.html third party advisory mailing list
https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip/ third party advisory exploit technical description
http://www.securitytracker.com/id/1040831 vdb entry
https://0patch.blogspot.si/2018/02/two-interesting-micropatches-for-7-zip.html
https://usn.ubuntu.com/3913-1/ vendor advisory
https://github.com/p7zip-project/p7zip/issues/7

Frequently Asked Questions

What is the severity of CVE-2017-17969?
CVE-2017-17969 has been scored as a high severity vulnerability.
How to fix CVE-2017-17969?
To fix CVE-2017-17969, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-17969 being actively exploited in the wild?
It is possible that CVE-2017-17969 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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