CVE-2023-20042
"Cisco ASA and FTD AnyConnect SSL VPN Session Handler Denial of Service"
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.
INFO
Published Date :
Nov. 1, 2023, 6:15 p.m.
Last Modified :
Jan. 25, 2024, 5:15 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.0
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2023-20042
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-20042.
| URL | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ssl-dos-kxG8mpUA | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-20042 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-20042 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Jan. 25, 2024
Action Type Old Value New Value Added CWE Cisco Systems, Inc. CWE-404 -
Reanalysis by [email protected]
Dec. 22, 2023
Action Type Old Value New Value Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H -
Initial Analysis by [email protected]
Nov. 14, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ssl-dos-kxG8mpUA No Types Assigned https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ssl-dos-kxG8mpUA Vendor Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *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:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.2:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.3:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.3.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.3.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.3.1.1:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.1.28:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.2.3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.2.7:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.2.11:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.2.13:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.2.14:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.3.3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.3.14:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.3.15:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.3.19:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.3.23:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.4:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.4.9:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1.7:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1.9:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1.10:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1.11:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1.13:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1.15:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.17.1.20:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.1.3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.2.5:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.18.2.7:*:*:*:*:*:*:* *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.19.1:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-20042 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-20042
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.02%
score
0.25361
percentile