Cisco ASA Software Cryptographic TLS and SSL Driver Denial of Service Vulnerability (cisco-sa-20190710-asa-ftd-dos)

high Nessus Plugin ID 133043
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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Adaptive Security Appliance Software is affected by a vulnerability in the cryptographic driver due to incomplete input validation of a Secure Sockets Layer (SSL) or Transport Layer Security (TLS) ingress packet header. An unauthenticated, remote attacker can exploit this, by sending a crafted TLS/SSL packet to an interface on the targeted device to cause the device to reboot unexpectedly.

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

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvp36425

See Also

http://www.nessus.org/u?5001de6f

Plugin Details

Severity: High

ID: 133043

File Name: cisco-sa-20190710-asa-dos.nasl

Version: 1.8

Type: local

Family: CISCO

Published: 1/17/2020

Updated: 5/6/2021

Dependencies: ssh_get_info.nasl, os_fingerprint.nasl

Risk Information

CVSS Score Source: CVE-2019-1873

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

Temporal Vector: 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: 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: 7/10/2019

Vulnerability Publication Date: 7/10/2019

Reference Information

CVE: CVE-2019-1873

BID: 109123

CISCO-BUG-ID: CSCvp36425

CISCO-SA: cisco-sa-20190710-asa-ftd-dos

IAVA: 2019-A-0271