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Status published
Medium
CVE-2020-1730
A flaw was found in libssh versions before 0.8.9 and...
Vulnerability Description
A flaw was found in libssh versions before 0.8.9 and before 0.9.4 in the way it handled AES-CTR (or DES ciphers if enabled) ciphers. The server or client could crash when the connection hasn't been fully initialized and the system tries to cleanup the ciphers when closing the connection. The biggest threat from this vulnerability is system availability.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VLSWHBQ3EPKGTGLQNH554Z746BJ3C554/
- https://usn.ubuntu.com/4327-1/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2A7BIFKUYIYKTY7FX4BEWVC2OHS5DPOU/
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://www.libssh.org/security/advisories/CVE-2020-1730.txt
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1730
- https://security.netapp.com/advisory/ntap-20200424-0001/
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Affected Vendor
Red Hat
View all reports →Affected Software
libssh
Vulnerable Versions:
libssh versions before 0.8.9, libssh versions before 0.9.4
Timeline
Official Publish:
April 13th, 2020
Last Modified:
August 4th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L