CVE-2020-1730
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
Product
Libssh
PublishedApr 13, 2020
First seenApr 13, 2020
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- libssh libssh0.8.9, 0.9.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| libssh libssh | 0.8.0 ≤ v < 0.8.9, 0.9.0 ≤ v < 0.9.4 | 0.8.9, 0.9.4 |
| netapp cloud_backup | No range specified | — |
| canonical ubuntu_linux | 18.04, 19.10 | — |
| fedoraproject fedora | 31, 32 | — |
| redhat enterprise_linux | 8.0 | — |
| oracle mysql_workbench | v ≤ 8.0.21 | — |
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