SSH Static Key Accepted

high Nessus Plugin ID 73920
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VPR Score: 8.9

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: High

ID: 73920

File Name: ssh_static_keys.nasl

Version: 1.24

Type: remote

Published: 5/8/2014

Updated: 6/12/2020

Dependencies: ssh_detect.nasl

Risk Information

Risk Factor: High

VPR Score: 8.9

CVSS Score Source: CVE-2012-1493

CVSS v2.0

Base Score: 7.8

Temporal Score: 6.8

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

Temporal Vector: 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: 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