CVE-2024-20331

MEDIUM EPSS 46.3%
Published Oct 23, 20241y ago · Modified Jun 17, 20261w ago
5.9 CVSS 3.1
Medium
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Published Oct 23, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

A vulnerability in the session authentication functionality of the Remote Access SSL VPN feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to prevent users from authenticating. This vulnerability is due to insufficient entropy in the authentication process. An attacker could exploit this vulnerability by determining the handle of an authenticating user and using it to terminate their authentication session. A successful exploit could allow the attacker to force a user to restart the authentication process, preventing a legitimate user from establishing remote access VPN sessions.

CVSS Details

Base Score
5.9
Exploitability
2.2
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
46.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-330
CWE-331

Affected Products 272

VendorProductVersionRange
ciscoadaptive_security_appliance_software9.8.1any
ciscoadaptive_security_appliance_software9.8.1.5any
ciscoadaptive_security_appliance_software9.8.1.7any
ciscoadaptive_security_appliance_software9.8.2any
ciscoadaptive_security_appliance_software9.8.2.8any
ciscoadaptive_security_appliance_software9.8.2.14any
ciscoadaptive_security_appliance_software9.8.2.15any
ciscoadaptive_security_appliance_software9.8.2.17any
ciscoadaptive_security_appliance_software9.8.2.20any
ciscoadaptive_security_appliance_software9.8.2.24any
ciscoadaptive_security_appliance_software9.8.2.26any
ciscoadaptive_security_appliance_software9.8.2.28any
ciscoadaptive_security_appliance_software9.8.2.33any
ciscoadaptive_security_appliance_software9.8.2.35any
ciscoadaptive_security_appliance_software9.8.2.38any
ciscoadaptive_security_appliance_software9.8.2.45any
ciscoadaptive_security_appliance_software9.8.3any
ciscoadaptive_security_appliance_software9.8.3.8any
ciscoadaptive_security_appliance_software9.8.3.11any
ciscoadaptive_security_appliance_software9.8.3.14any
ciscoadaptive_security_appliance_software9.8.3.16any
ciscoadaptive_security_appliance_software9.8.3.18any
ciscoadaptive_security_appliance_software9.8.3.21any
ciscoadaptive_security_appliance_software9.8.3.26any
ciscoadaptive_security_appliance_software9.8.3.29any
ciscoadaptive_security_appliance_software9.8.4any
ciscoadaptive_security_appliance_software9.8.4.3any
ciscoadaptive_security_appliance_software9.8.4.7any
ciscoadaptive_security_appliance_software9.8.4.8any
ciscoadaptive_security_appliance_software9.8.4.10any
ciscoadaptive_security_appliance_software9.8.4.12any
ciscoadaptive_security_appliance_software9.8.4.15any
ciscoadaptive_security_appliance_software9.8.4.17any
ciscoadaptive_security_appliance_software9.8.4.20any
ciscoadaptive_security_appliance_software9.8.4.22any
ciscoadaptive_security_appliance_software9.8.4.25any
ciscoadaptive_security_appliance_software9.8.4.26any
ciscoadaptive_security_appliance_software9.8.4.29any
ciscoadaptive_security_appliance_software9.8.4.32any
ciscoadaptive_security_appliance_software9.8.4.33any
ciscoadaptive_security_appliance_software9.8.4.34any
ciscoadaptive_security_appliance_software9.8.4.35any
ciscoadaptive_security_appliance_software9.8.4.39any
ciscoadaptive_security_appliance_software9.8.4.40any
ciscoadaptive_security_appliance_software9.8.4.41any
ciscoadaptive_security_appliance_software9.8.4.43any
ciscoadaptive_security_appliance_software9.8.4.44any
ciscoadaptive_security_appliance_software9.8.4.45any
ciscoadaptive_security_appliance_software9.8.4.46any
ciscoadaptive_security_appliance_software9.8.4.48any
ciscoadaptive_security_appliance_software9.12.1any
ciscoadaptive_security_appliance_software9.12.1.2any
ciscoadaptive_security_appliance_software9.12.1.3any
ciscoadaptive_security_appliance_software9.12.2any
ciscoadaptive_security_appliance_software9.12.2.1any
ciscoadaptive_security_appliance_software9.12.2.4any
ciscoadaptive_security_appliance_software9.12.2.5any
ciscoadaptive_security_appliance_software9.12.2.9any
ciscoadaptive_security_appliance_software9.12.3any
ciscoadaptive_security_appliance_software9.12.3.2any
ciscoadaptive_security_appliance_software9.12.3.7any
ciscoadaptive_security_appliance_software9.12.3.9any
ciscoadaptive_security_appliance_software9.12.3.12any
ciscoadaptive_security_appliance_software9.12.4any
ciscoadaptive_security_appliance_software9.12.4.2any
ciscoadaptive_security_appliance_software9.12.4.4any
ciscoadaptive_security_appliance_software9.12.4.7any
ciscoadaptive_security_appliance_software9.12.4.8any
ciscoadaptive_security_appliance_software9.12.4.10any
ciscoadaptive_security_appliance_software9.12.4.13any
ciscoadaptive_security_appliance_software9.12.4.18any
ciscoadaptive_security_appliance_software9.12.4.24any
ciscoadaptive_security_appliance_software9.12.4.26any
ciscoadaptive_security_appliance_software9.12.4.29any
ciscoadaptive_security_appliance_software9.12.4.30any
ciscoadaptive_security_appliance_software9.12.4.35any
ciscoadaptive_security_appliance_software9.12.4.37any
ciscoadaptive_security_appliance_software9.12.4.38any
ciscoadaptive_security_appliance_software9.12.4.39any
ciscoadaptive_security_appliance_software9.12.4.40any
ciscoadaptive_security_appliance_software9.12.4.41any
ciscoadaptive_security_appliance_software9.12.4.47any
ciscoadaptive_security_appliance_software9.12.4.48any
ciscoadaptive_security_appliance_software9.12.4.50any
ciscoadaptive_security_appliance_software9.12.4.52any
ciscoadaptive_security_appliance_software9.12.4.54any
ciscoadaptive_security_appliance_software9.12.4.55any
ciscoadaptive_security_appliance_software9.12.4.56any
ciscoadaptive_security_appliance_software9.12.4.58any
ciscoadaptive_security_appliance_software9.12.4.62any
ciscoadaptive_security_appliance_software9.12.4.65any
ciscoadaptive_security_appliance_software9.14.1any
ciscoadaptive_security_appliance_software9.14.1.6any
ciscoadaptive_security_appliance_software9.14.1.10any
ciscoadaptive_security_appliance_software9.14.1.15any
ciscoadaptive_security_appliance_software9.14.1.19any
ciscoadaptive_security_appliance_software9.14.1.30any
ciscoadaptive_security_appliance_software9.14.2any
ciscoadaptive_security_appliance_software9.14.2.4any
ciscoadaptive_security_appliance_software9.14.2.8any
ciscoadaptive_security_appliance_software9.14.2.13any
ciscoadaptive_security_appliance_software9.14.2.15any
ciscoadaptive_security_appliance_software9.14.3any
ciscoadaptive_security_appliance_software9.14.3.1any
ciscoadaptive_security_appliance_software9.14.3.9any
ciscoadaptive_security_appliance_software9.14.3.11any
ciscoadaptive_security_appliance_software9.14.3.13any
ciscoadaptive_security_appliance_software9.14.3.15any
ciscoadaptive_security_appliance_software9.14.3.18any
ciscoadaptive_security_appliance_software9.14.4any
ciscoadaptive_security_appliance_software9.14.4.6any
ciscoadaptive_security_appliance_software9.14.4.7any
ciscoadaptive_security_appliance_software9.14.4.12any
ciscoadaptive_security_appliance_software9.14.4.13any
ciscoadaptive_security_appliance_software9.14.4.14any
ciscoadaptive_security_appliance_software9.14.4.15any
ciscoadaptive_security_appliance_software9.14.4.17any
ciscoadaptive_security_appliance_software9.14.4.22any
ciscoadaptive_security_appliance_software9.14.4.23any
ciscoadaptive_security_appliance_software9.14.4.24any
ciscoadaptive_security_appliance_software9.15.1any
ciscoadaptive_security_appliance_software9.15.1.1any
ciscoadaptive_security_appliance_software9.15.1.7any
ciscoadaptive_security_appliance_software9.15.1.10any
ciscoadaptive_security_appliance_software9.15.1.15any
ciscoadaptive_security_appliance_software9.15.1.16any
ciscoadaptive_security_appliance_software9.15.1.17any
ciscoadaptive_security_appliance_software9.15.1.21any
ciscoadaptive_security_appliance_software9.16.1any
ciscoadaptive_security_appliance_software9.16.1.28any
ciscoadaptive_security_appliance_software9.16.2any
ciscoadaptive_security_appliance_software9.16.2.3any
ciscoadaptive_security_appliance_software9.16.2.7any
ciscoadaptive_security_appliance_software9.16.2.11any
ciscoadaptive_security_appliance_software9.16.2.13any
ciscoadaptive_security_appliance_software9.16.2.14any
ciscoadaptive_security_appliance_software9.16.3any
ciscoadaptive_security_appliance_software9.16.3.3any
ciscoadaptive_security_appliance_software9.16.3.14any
ciscoadaptive_security_appliance_software9.16.3.15any
ciscoadaptive_security_appliance_software9.16.3.19any
ciscoadaptive_security_appliance_software9.16.3.23any
ciscoadaptive_security_appliance_software9.16.4any
ciscoadaptive_security_appliance_software9.16.4.9any
ciscoadaptive_security_appliance_software9.16.4.14any
ciscoadaptive_security_appliance_software9.16.4.18any
ciscoadaptive_security_appliance_software9.16.4.19any
ciscoadaptive_security_appliance_software9.16.4.27any
ciscoadaptive_security_appliance_software9.16.4.38any
ciscoadaptive_security_appliance_software9.16.4.39any
ciscoadaptive_security_appliance_software9.16.4.42any
ciscoadaptive_security_appliance_software9.16.4.48any
ciscoadaptive_security_appliance_software9.17.1any
ciscoadaptive_security_appliance_software9.17.1.7any
ciscoadaptive_security_appliance_software9.17.1.9any
ciscoadaptive_security_appliance_software9.17.1.10any
ciscoadaptive_security_appliance_software9.17.1.11any
ciscoadaptive_security_appliance_software9.17.1.13any
ciscoadaptive_security_appliance_software9.17.1.15any
ciscoadaptive_security_appliance_software9.17.1.20any
ciscoadaptive_security_appliance_software9.17.1.30any
ciscoadaptive_security_appliance_software9.17.1.33any
ciscoadaptive_security_appliance_software9.18.1any
ciscoadaptive_security_appliance_software9.18.1.3any
ciscoadaptive_security_appliance_software9.18.2any
ciscoadaptive_security_appliance_software9.18.2.5any
ciscoadaptive_security_appliance_software9.18.2.7any
ciscoadaptive_security_appliance_software9.18.2.8any
ciscoadaptive_security_appliance_software9.18.3any
ciscoadaptive_security_appliance_software9.18.3.39any
ciscoadaptive_security_appliance_software9.18.3.46any
ciscoadaptive_security_appliance_software9.18.3.53any
ciscoadaptive_security_appliance_software9.18.3.55any
ciscoadaptive_security_appliance_software9.18.3.56any
ciscoadaptive_security_appliance_software9.18.4any
ciscoadaptive_security_appliance_software9.18.4.5any
ciscoadaptive_security_appliance_software9.18.4.8any
ciscoadaptive_security_appliance_software9.19.1any
ciscoadaptive_security_appliance_software9.19.1.5any
ciscoadaptive_security_appliance_software9.19.1.9any
ciscoadaptive_security_appliance_software9.19.1.12any
ciscoadaptive_security_appliance_software9.19.1.18any
ciscoadaptive_security_appliance_software9.19.1.22any
ciscoadaptive_security_appliance_software9.19.1.24any
ciscoadaptive_security_appliance_software9.19.1.27any
ciscoadaptive_security_appliance_software9.20.1any
ciscoadaptive_security_appliance_software9.20.1.5any
ciscoadaptive_security_appliance_software9.20.2any
ciscofirepower_threat_defense_software6.2.3any
ciscofirepower_threat_defense_software6.2.3.1any
ciscofirepower_threat_defense_software6.2.3.2any
ciscofirepower_threat_defense_software6.2.3.3any
ciscofirepower_threat_defense_software6.2.3.4any
ciscofirepower_threat_defense_software6.2.3.5any
ciscofirepower_threat_defense_software6.2.3.6any
ciscofirepower_threat_defense_software6.2.3.7any
ciscofirepower_threat_defense_software6.2.3.8any
ciscofirepower_threat_defense_software6.2.3.9any
ciscofirepower_threat_defense_software6.2.3.10any
ciscofirepower_threat_defense_software6.2.3.11any
ciscofirepower_threat_defense_software6.2.3.12any
ciscofirepower_threat_defense_software6.2.3.13any
ciscofirepower_threat_defense_software6.2.3.14any
ciscofirepower_threat_defense_software6.2.3.15any
ciscofirepower_threat_defense_software6.2.3.16any
ciscofirepower_threat_defense_software6.2.3.17any
ciscofirepower_threat_defense_software6.2.3.18any
ciscofirepower_threat_defense_software6.4.0any
ciscofirepower_threat_defense_software6.4.0.1any
ciscofirepower_threat_defense_software6.4.0.2any
ciscofirepower_threat_defense_software6.4.0.3any
ciscofirepower_threat_defense_software6.4.0.4any
ciscofirepower_threat_defense_software6.4.0.5any
ciscofirepower_threat_defense_software6.4.0.6any
ciscofirepower_threat_defense_software6.4.0.7any
ciscofirepower_threat_defense_software6.4.0.8any
ciscofirepower_threat_defense_software6.4.0.9any
ciscofirepower_threat_defense_software6.4.0.10any
ciscofirepower_threat_defense_software6.4.0.11any
ciscofirepower_threat_defense_software6.4.0.12any
ciscofirepower_threat_defense_software6.4.0.13any
ciscofirepower_threat_defense_software6.4.0.14any
ciscofirepower_threat_defense_software6.4.0.15any
ciscofirepower_threat_defense_software6.4.0.16any
ciscofirepower_threat_defense_software6.4.0.17any
ciscofirepower_threat_defense_software6.6.0any
ciscofirepower_threat_defense_software6.6.0.1any
ciscofirepower_threat_defense_software6.6.1any
ciscofirepower_threat_defense_software6.6.3any
ciscofirepower_threat_defense_software6.6.4any
ciscofirepower_threat_defense_software6.6.5any
ciscofirepower_threat_defense_software6.6.5.1any
ciscofirepower_threat_defense_software6.6.5.2any
ciscofirepower_threat_defense_software6.6.7any
ciscofirepower_threat_defense_software6.6.7.1any
ciscofirepower_threat_defense_software6.6.7.2any
ciscofirepower_threat_defense_software6.7.0any
ciscofirepower_threat_defense_software6.7.0.1any
ciscofirepower_threat_defense_software6.7.0.2any
ciscofirepower_threat_defense_software6.7.0.3any
ciscofirepower_threat_defense_software7.0.0any
ciscofirepower_threat_defense_software7.0.0.1any
ciscofirepower_threat_defense_software7.0.1any
ciscofirepower_threat_defense_software7.0.1.1any
ciscofirepower_threat_defense_software7.0.2any
ciscofirepower_threat_defense_software7.0.2.1any
ciscofirepower_threat_defense_software7.0.3any
ciscofirepower_threat_defense_software7.0.4any
ciscofirepower_threat_defense_software7.0.5any
ciscofirepower_threat_defense_software7.0.6any
ciscofirepower_threat_defense_software7.0.6.1any
ciscofirepower_threat_defense_software7.1.0any
ciscofirepower_threat_defense_software7.1.0.1any
ciscofirepower_threat_defense_software7.1.0.2any
ciscofirepower_threat_defense_software7.1.0.3any
ciscofirepower_threat_defense_software7.2.0any
ciscofirepower_threat_defense_software7.2.0.1any
ciscofirepower_threat_defense_software7.2.1any
ciscofirepower_threat_defense_software7.2.2any
ciscofirepower_threat_defense_software7.2.3any
ciscofirepower_threat_defense_software7.2.4any
ciscofirepower_threat_defense_software7.2.4.1any
ciscofirepower_threat_defense_software7.2.5any
ciscofirepower_threat_defense_software7.2.5.1any
ciscofirepower_threat_defense_software7.2.5.2any
ciscofirepower_threat_defense_software7.3.0any
ciscofirepower_threat_defense_software7.3.1any
ciscofirepower_threat_defense_software7.3.1.1any
ciscofirepower_threat_defense_software7.3.1.2any
ciscofirepower_threat_defense_software7.4.0any
ciscofirepower_threat_defense_software7.4.1any
ciscofirepower_threat_defense_software7.4.1.1any

References 3

  • sec.cloudapps.cisco.com https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-vpn-nyH3fhp
    Vendor Advisory
  • sec.cloudapps.cisco.com https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-xss-M446vbEO
    Broken Link
  • sec.cloudapps.cisco.com https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75300
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.