NULL pointer dereference in Libssh
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.
EPSS: 0.013 (67.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Libssh
- Debian Debian_linux — versions 10.0
- Fedoraproject Fedora — versions 37
- Redhat Enterprise_linux — versions 8.0, 9.0
- N/a Libssh — versions libssh-2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Third Party Advisory)
- secalert@redhat.com (Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Vendor Advisory)
- secalert@redhat.com (vendor-advisory)
- secalert@redhat.com (mailing-list, Mailing List, Third Party Advisory)
- secalert@redhat.com (vendor-advisory)
Frequently asked questions
- What is CVE-2023-1667?
- CVE-2023-1667 is a medium-severity vulnerability in Libssh, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2023-05-26.
- How severe is CVE-2023-1667?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2023-1667 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.