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

high Nessus Plugin ID 99667
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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 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.

Solution

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

See Also

http://www.nessus.org/u?262b831a

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCuv48243

Plugin Details

Severity: High

ID: 99667

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

Version: 1.6

Type: local

Family: CISCO

Published: 4/25/2017

Updated: 11/13/2019

Dependencies: ssh_get_info.nasl, os_fingerprint.nasl

Risk Information

CVSS Score Source: CVE-2017-6608

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

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

Risk Factor: High

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:2.3: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-2017-6608

BID: 97937

CISCO-BUG-ID: CSCuv48243

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