SSH Static Key Accepted

Critical Nessus Plugin ID 73920

Synopsis

The SSH server on the remote host accepts a static SSH private key for authentication.

Description

The SSH server on the remote host accepts a publicly known static SSH private key for authentication. A remote attacker can log in to this host using this publicly known private key.

Solution

Remove the vulnerable public keys from the SSH server.

See Also

https://packetstormsecurity.com/files/view/38537/lantronix.txt

http://www.nessus.org/u?2d97477f

http://www.nessus.org/u?ac9db749

https://www.trustmatta.com/advisories/MATTA-2012-002.txt

http://www.nessus.org/u?f7e3f14d

Plugin Details

Severity: Critical

ID: 73920

File Name: ssh_static_keys.nasl

Version: 1.22

Type: remote

Published: 2014/05/08

Modified: 2018/11/15

Dependencies: 10267

Risk Information

Risk Factor: Critical

CVSS v2.0

Base Score: 10

Temporal Score: 8.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:H/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 9.4

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

Excluded KB Items: global_settings/supplied_logins_only

Exploit Available: true

Exploit Ease: Exploits are available

Exploitable With

Metasploit (F5 BIG-IP SSH Private Key Exposure)

Reference Information

CVE: CVE-2012-1493, CVE-2013-3619

BID: 53897, 66267, 66268, 66299

EDB-ID: 19091, 32372