CVE-2023-1667

Description

A NULL pointer dereference was found In libssh during re-keying with algorithm guessing. This issue may allow an authenticated client to cause a denial of service.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.88% Top 30%
Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org Vendor Advisory libssh.org
Affected: n/a libssh
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/security/cve/CVE-2023-1667 third party advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2182199 third party advisory issue tracking
http://www.libssh.org/security/advisories/CVE-2023-1667.txt vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN/ vendor advisory
https://lists.debian.org/debian-lts-announce/2023/05/msg00029.html third party advisory mailing list
https://security.gentoo.org/glsa/202312-05 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-1667?
CVE-2023-1667 has been scored as a medium severity vulnerability.
How to fix CVE-2023-1667?
To fix CVE-2023-1667, 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-2023-1667 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-1667 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-1667?
CVE-2023-1667 affects n/a libssh.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.