Cisco Adaptive Security Appliance ICMP Echo Request ACL Bypass (cisco-sa-20160711-asa)

Medium Nessus Plugin ID 92630


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


According to its version and configuration, the Cisco Adaptive Security Appliance (ASA) software running on the remote device is version 8.2.x or 9.4.x prior to 9.4(3.3), 9.5.x prior to 9.5(2.10), or 9.6.x prior to 9.6(1.5). It is, therefore, affected by an ACL bypass vulnerability due to a flaw in the implementation of ACL-based filters for ICMP echo requests and the range of ICMP echo request subtypes. An unauthenticated, remote attacker can exploit this, by sending ICMP echo request traffic, to bypass ACL configurations on the affected device, allowing ICMP traffic to pass through that otherwise would be denied.

Note that ICMP must be enabled for the device to be affected by this vulnerability.


Upgrade to the relevant fixed version referenced in Cisco bug ID CSCuy25163.

See Also

Plugin Details

Severity: Medium

ID: 92630

File Name: cisco-sa-20160711.nasl

Version: 1.7

Type: local

Family: CISCO

Published: 2016/07/29

Updated: 2019/11/14

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.2

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

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

CVSS v3.0

Base Score: 5.3

Temporal Score: 4.6

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

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: 2016/07/11

Vulnerability Publication Date: 2016/07/11

Reference Information

CVE: CVE-2016-1445

BID: 91693


CISCO-SA: cisco-sa-20160711-asa