Cisco ASA Software DNS Response Message Handling DoS (cisco-sa-20170419-asa-dns)

Medium Nessus Plugin ID 99665

Synopsis

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

Description

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 DNS code due to improper handling of crafted DNS response messages. An unauthenticated, remote attacker can exploit this, via a specially crafted DNS response, to cause the device to reload or corrupt the local DNS cache information.

Solution

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

See Also

http://www.nessus.org/u?75ae1722

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvb40898

Plugin Details

Severity: Medium

ID: 99665

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

Version: 1.6

Type: local

Family: CISCO

Published: 2017/04/25

Updated: 2019/11/13

Dependencies: 11936, 12634

Risk Information

Risk Factor: Medium

CVSS Score Source: CVE-2017-6607

CVSS v2.0

Base Score: 5.8

Temporal Score: 4.3

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

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

CVSS v3.0

Base Score: 8.7

Temporal Score: 7.6

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/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-2017-6607

BID: 97933

CISCO-BUG-ID: CSCvb40898

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