Description
The publickey_from_privatekey function in libssh before 0.5.4, when no algorithm is matched during negotiations, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a "Client: Diffie-Hellman Key Exchange Init" packet.
Metrics
CVSS 2.0 4.3/10
AV:N/AC:M/Au:N/C:N/I:N/A:PWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://lists.fedoraproject.org/pipermail/package-announce/2013-February/098065.html
- http://lists.fedoraproject.org/pipermail/package-announce/2013-February/098094.html
- http://secunia.com/advisories/51982Vendor Advisory
- http://www.libssh.org/2013/01/22/libssh-0-5-4-security-release/Patch, Vendor Advisory
- http://www.ubuntu.com/usn/USN-1707-1
- https://exchange.xforce.ibmcloud.com/vulnerabilities/81595
- http://lists.fedoraproject.org/pipermail/package-announce/2013-February/098065.html
- http://lists.fedoraproject.org/pipermail/package-announce/2013-February/098094.html
- http://secunia.com/advisories/51982Vendor Advisory
- http://www.libssh.org/2013/01/22/libssh-0-5-4-security-release/Patch, Vendor Advisory
- http://www.ubuntu.com/usn/USN-1707-1
- https://exchange.xforce.ibmcloud.com/vulnerabilities/81595
Timeline
- Published
- Feb 5, 2013
- Last modified
- Jun 16, 2026
- NVD status
- Modified