Cisco ASA Software SSL / TLS Packet Handling DoS (cisco-sa-20170419-asa-tls)

High Nessus Plugin ID 99667


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


According to its self-reported version and configuration, the Cisco Adaptive Security Appliance (ASA) software running on the remote device is affected by a denial of service vulnerability in the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) code due to improper parsing of crafted SSL or TLS packets. An unauthenticated, remote attacker can exploit this, via specially crafted packets, to cause the device to reload.


Upgrade to the relevant fixed version referenced in Cisco security advisory cisco-sa-20170419-asa-tls.

See Also

Plugin Details

Severity: High

ID: 99667

File Name: cisco-sa-20170419-asa-tls.nasl

Version: 1.6

Type: local

Family: CISCO

Published: 2017/04/25

Updated: 2019/11/13

Dependencies: 11936, 12634

Risk Information

Risk Factor: High

CVSS Score Source: CVE-2017-6608

CVSS v2.0

Base Score: 7.8

Temporal Score: 5.8

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

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

CVSS v3.0

Base Score: 8.6

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: cpe:/a:cisco:adaptive_security_appliance_software

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/04/19

Vulnerability Publication Date: 2017/04/19

Reference Information

CVE: CVE-2017-6608

BID: 97937


CISCO-SA: cisco-sa-20170419-asa-tls