Detections
Analytics
Cisco Adaptive Security Appliance Software SSL/TLS DoS (cisco-sa-asaftd-dos-4ygzLKU9)
high Nessus Plugin ID 155445
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Synopsis
The remote device is missing a vendor-supplied security patchDescription
According to its self-reported version, Cisco ASA Software is affected by a vulnerability.- A vulnerability in SSL/TLS message handler for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because incoming SSL/TLS packets are not properly processed. An attacker could exploit this vulnerability by sending a crafted SSL/TLS packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. (CVE-2021-40117)
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 CSCvy43187See Also
http://www.nessus.org/u?29eccd9b
https://tools.cisco.com/security/center/viewErp.x?alertId=ERP-74773
Plugin Details
Severity: High
ID: 155445
File Name: cisco-sa-asaftd-dos-4ygzLKU9-asa.nasl
Version: 1.11
Type: local
Family: CISCO
Published: 11/17/2021
Updated: 6/7/2022
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
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-2021-40117
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/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_software
Required KB Items: Host/Cisco/ASA
Exploit Ease: No known exploits are available
Patch Publication Date: 10/27/2021
Vulnerability Publication Date: 10/27/2021
Reference Information
CVE: CVE-2021-40117