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Cisco Adaptive Security Appliance (AS IPsec Denial of Service Vulnerability

high Nessus Plugin ID 136829

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, the Cisco Adaptive Security Appliance (ASA) Software is affected by the following vulnerability :

 - A vulnerability in the software cryptography module of the Cisco Adaptive Security Virtual Appliance (ASAv) and Firepower 2100 Series running Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause an unexpected reload of the device that results in a denial of service (DoS) condition.The vulnerability is due to a logic error with how the software cryptography module handles IPsec sessions. An attacker could exploit this vulnerability by creating and sending traffic in a high number of IPsec sessions through the targeted device. A successful exploit could cause the device to reload and result in a DoS condition. (CVE-2019-1706)

Please see the included Cisco BIDs and Cisco Security Advisory for more information

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvk66732

See Also

http://www.nessus.org/u?195b41d9

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvk66732

Plugin Details

Severity: High

ID: 136829

File Name: cisco-sa-20190501-asa-ipsec-dos.nasl

Version: 1.4

Type: local

Family: CISCO

Published: 5/25/2020

Updated: 8/23/2021

Supported Sensors: Nessus

Risk Information

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

CVSS Score Source: CVE-2019-1706

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:/a:cisco:adaptive_security_appliance

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/1/2019

Vulnerability Publication Date: 5/1/2019

Reference Information

CVE: CVE-2019-1706

BID: 108144