Cisco ASA 5500 Series SSH Timeout DoS

Medium Nessus Plugin ID 64555


The remote security device is missing a vendor-supplied security patch.


The remote Cisco ASA is missing a security patch and may be affected by a denial of service vulnerability. Due to a flaw in the management of remote SSH sessions, multiple login sessions can cause the ASA to crash. A remote, authenticated attacker could exploit this to cause a denial of service.


Upgrade to Cisco ASA Software 8.4(1) / 8.5(1) / 8.6 or later.

See Also

Plugin Details

Severity: Medium

ID: 64555

File Name: cisco_asa_ssh_timeout_dos.nasl

Version: 1.4

Type: local

Family: CISCO

Published: 2013/02/11

Updated: 2018/11/15

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 6.3

Temporal Score: 4.7

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

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

Vulnerability Information

CPE: cpe:/a:cisco:adaptive_security_appliance_software

Required KB Items: Host/Cisco/ASA, Host/Cisco/ASA/model

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2013/01/16

Vulnerability Publication Date: 2013/01/16

Reference Information

CVE: CVE-2012-5717

BID: 57485