CVE-2023-6918
MEDIUM
MEDIUM
Priority: 0.07
BB Relevance:
71/100
Published: 2023-12-19
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
None
I:
None
A:
Low
Description
A flaw was found in the libssh implements abstract layer for message digest (MD) operations implemented by different supported crypto backends. The return values from these were not properly checked, which could cause low-memory situations failures, NULL dereferences, crashes, or usage of the uninitialized memory as an input for the KDF. In this case, non-matching keys will result in decryption/integrity failures, terminating the connection.
Weakness Classification (1)
Affected Software (5)
| Vendor | Product | Version |
|---|---|---|
| fedoraproject | fedora | 38 |
| fedoraproject | fedora | 39 |
| libssh | libssh | 0.9.0 – 0.9.8 |
| redhat | enterprise_linux | 8.0 |
| redhat | enterprise_linux | 9.0 |
References & Advisories (9)
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vdb-entry
x_refsource_REDHAT
issue-tracking
x_refsource_REDHAT