Cisco Adaptive Security Appliance Software SSL/TLS DoS (cisco-sa-asa-ssl-dos-7uZWwSEy)

high Nessus Plugin ID 148306
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Synopsis

The remote device is missing a vendor-supplied security patch

Description

A denial of service (DoS) vulnerability exists in Cisco Adaptive Security Appliance due to improper error handling on established SSL/TLS connections. An unauthenticated, remote attacker can exploit this issue, by establishing an SSL/TLS connection with the affected device and then sending a malicious SSL/TLS message within that connection, to cause the device to reload.

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 CSCvt64822

See Also

http://www.nessus.org/u?9ad5aa6e

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvt64822

Plugin Details

Severity: High

ID: 148306

File Name: cisco-sa-asa-ssl-dos-7uZWwSEy.nasl

Version: 1.6

Type: local

Family: CISCO

Published: 4/2/2021

Updated: 5/6/2021

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2020-27124

VPR

Risk Factor: Medium

Score: 4.8

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/22/2020

Vulnerability Publication Date: 10/22/2020

Reference Information

CVE: CVE-2020-27124

IAVA: 2020-A-0488

CISCO-BUG-ID: CSCvt64822

CISCO-SA: cisco-sa-asa-ssl-dos-7uZWwSEy

CWE: 457