CVE-2023-1667
MEDIUMCVSS 6.5/10EPSS 1.31%
Last modified
CVE-2023-1667 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 1.31% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Libssh | Libssh | >= 0.9.1, <= 0.9.6 |
| Libssh | Libssh | >= 0.10.0, <= 0.10.4 |
| Fedoraproject | Fedora | 37 |
| Debian | Debian Linux | 10.0 |
| Redhat | Enterprise Linux | 8.0 |
| Redhat | Enterprise Linux | 9.0 |
References
- http://www.libssh.org/security/advisories/CVE-2023-1667.txtVendor Advisory
- https://access.redhat.com/security/cve/CVE-2023-1667Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2182199Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/05/msg00029.htmlMailing List, Third Party Advisory
- http://www.libssh.org/security/advisories/CVE-2023-1667.txtVendor Advisory
- https://access.redhat.com/security/cve/CVE-2023-1667Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2182199Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/05/msg00029.htmlMailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-1667?
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.
How severe is CVE-2023-1667?
CVE-2023-1667 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.31% probability of exploitation in the next 30 days.
How do I fix CVE-2023-1667?
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2023-1667?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST