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CVE-2023-20042

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
01/11/2023
Last modified:
25/01/2024

Description

A vulnerability in the AnyConnect SSL VPN feature of 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 is due to an implementation error within the SSL/TLS session handling process that can prevent the release of a session handler under specific conditions. An attacker could exploit this vulnerability by sending crafted SSL/TLS traffic to an affected device, increasing the probability of session handler leaks. A successful exploit could allow the attacker to eventually deplete the available session handler pool, preventing new sessions from being established and causing a DoS condition.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.60 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
8.60
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:cisco:firepower_threat_defense:7.0.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:7.0.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:7.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:7.0.1.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:7.0.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:7.0.2.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:7.0.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:7.0.4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:7.0.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:7.1.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:7.2.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firepower_threat_defense:7.2.0.1:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools