Cisco ASA Software IPsec Packet Handling DoS (cisco-sa-20170419-asa-ipsec)

high Nessus Plugin ID 99666


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 IPsec code due to improper parsing of malformed IPsec packets. An authenticated, remote attacker can exploit this, via specially crafted IPsec packets, to cause the device to reload.


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

See Also

Plugin Details

Severity: High

ID: 99666

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

Version: 1.6

Type: local

Family: CISCO

Published: 4/25/2017

Updated: 11/13/2019

Risk Information


Risk Factor: Medium

Score: 4.4


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

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

CVSS Score Source: CVE-2017-6609


Risk Factor: High

Base Score: 7.7

Temporal Score: 6.7

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

Temporal Vector: 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: 4/19/2017

Vulnerability Publication Date: 4/19/2017

Reference Information

CVE: CVE-2017-6609

BID: 97936