Vulnerability Monitor

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CVE-2023-20256

Multiple vulnerabilities in the per-user-override feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass a configured access control list (ACL) and allow traffic that should be denied to flow through an affected device. These vulnerabilities are due to a logic error that could occur when the affected software constructs and applies per-user-override rules. An attacker could exploit these vulnerabilities by connecting to a network through an affected device that has a vulnerable configuration. A successful exploit could allow the attacker to bypass the interface ACL and access resources that would should be protected.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.0, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts limited integrity, for affected systems. Impacting 2 products from cisco, from cisco organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2023, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2023-11-01T17:15:11.717

Last Modified

2024-11-21T07:41:00.497

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.0 (MEDIUM)

Weaknesses
  • Type: Secondary
    CWE-290
  • Type: Primary
    NVD-CWE-noinfo
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco adaptive_security_appliance_software 9.8.4.22 Yes
Operating System cisco adaptive_security_appliance_software 9.8.4.25 Yes
Operating System cisco adaptive_security_appliance_software 9.8.4.26 Yes
Operating System cisco adaptive_security_appliance_software 9.8.4.29 Yes
Operating System cisco adaptive_security_appliance_software 9.8.4.32 Yes
Operating System cisco adaptive_security_appliance_software 9.8.4.33 Yes
Operating System cisco adaptive_security_appliance_software 9.8.4.34 Yes
Operating System cisco adaptive_security_appliance_software 9.8.4.35 Yes
Operating System cisco adaptive_security_appliance_software 9.8.4.39 Yes
Operating System cisco adaptive_security_appliance_software 9.8.4.40 Yes
Operating System cisco adaptive_security_appliance_software 9.8.4.41 Yes
Operating System cisco adaptive_security_appliance_software 9.8.4.43 Yes
Operating System cisco adaptive_security_appliance_software 9.8.4.44 Yes
Operating System cisco adaptive_security_appliance_software 9.8.4.45 Yes
Operating System cisco adaptive_security_appliance_software 9.8.4.46 Yes
Operating System cisco adaptive_security_appliance_software 9.8.4.48 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.2 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.4 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.7 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.8 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.10 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.13 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.18 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.24 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.26 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.29 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.30 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.35 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.37 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.38 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.39 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.40 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.41 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.47 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.48 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.50 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.52 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.54 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.55 Yes
Operating System cisco adaptive_security_appliance_software 9.12.4.56 Yes
Operating System cisco adaptive_security_appliance_software 9.14.1.10 Yes
Operating System cisco adaptive_security_appliance_software 9.14.1.15 Yes
Operating System cisco adaptive_security_appliance_software 9.14.1.19 Yes
Operating System cisco adaptive_security_appliance_software 9.14.1.30 Yes
Operating System cisco adaptive_security_appliance_software 9.14.2 Yes
Operating System cisco adaptive_security_appliance_software 9.14.2.4 Yes
Operating System cisco adaptive_security_appliance_software 9.14.2.8 Yes
Operating System cisco adaptive_security_appliance_software 9.14.2.13 Yes
Operating System cisco adaptive_security_appliance_software 9.14.2.15 Yes
Operating System cisco adaptive_security_appliance_software 9.14.3 Yes
Operating System cisco adaptive_security_appliance_software 9.14.3.1 Yes
Operating System cisco adaptive_security_appliance_software 9.14.3.9 Yes
Operating System cisco adaptive_security_appliance_software 9.14.3.11 Yes
Operating System cisco adaptive_security_appliance_software 9.14.3.13 Yes
Operating System cisco adaptive_security_appliance_software 9.14.3.15 Yes
Operating System cisco adaptive_security_appliance_software 9.14.3.18 Yes
Operating System cisco adaptive_security_appliance_software 9.14.4 Yes
Operating System cisco adaptive_security_appliance_software 9.14.4.6 Yes
Operating System cisco adaptive_security_appliance_software 9.14.4.7 Yes
Operating System cisco adaptive_security_appliance_software 9.14.4.12 Yes
Operating System cisco adaptive_security_appliance_software 9.14.4.13 Yes
Operating System cisco adaptive_security_appliance_software 9.14.4.14 Yes
Operating System cisco adaptive_security_appliance_software 9.14.4.15 Yes
Operating System cisco adaptive_security_appliance_software 9.14.4.17 Yes
Operating System cisco adaptive_security_appliance_software 9.14.4.22 Yes
Operating System cisco adaptive_security_appliance_software 9.14.4.23 Yes
Operating System cisco adaptive_security_appliance_software 9.15.1 Yes
Operating System cisco adaptive_security_appliance_software 9.15.1.1 Yes
Operating System cisco adaptive_security_appliance_software 9.15.1.7 Yes
Operating System cisco adaptive_security_appliance_software 9.15.1.10 Yes
Operating System cisco adaptive_security_appliance_software 9.15.1.15 Yes
Operating System cisco adaptive_security_appliance_software 9.15.1.16 Yes
Operating System cisco adaptive_security_appliance_software 9.15.1.17 Yes
Operating System cisco adaptive_security_appliance_software 9.15.1.21 Yes
Operating System cisco adaptive_security_appliance_software 9.16.1 Yes
Operating System cisco adaptive_security_appliance_software 9.16.1.28 Yes
Operating System cisco adaptive_security_appliance_software 9.16.2 Yes
Operating System cisco adaptive_security_appliance_software 9.16.2.3 Yes
Operating System cisco adaptive_security_appliance_software 9.16.2.7 Yes
Operating System cisco adaptive_security_appliance_software 9.16.2.11 Yes
Operating System cisco adaptive_security_appliance_software 9.16.2.13 Yes
Operating System cisco adaptive_security_appliance_software 9.16.2.14 Yes
Operating System cisco adaptive_security_appliance_software 9.16.3 Yes
Operating System cisco adaptive_security_appliance_software 9.16.3.3 Yes
Operating System cisco adaptive_security_appliance_software 9.16.3.14 Yes
Operating System cisco adaptive_security_appliance_software 9.16.3.15 Yes
Operating System cisco adaptive_security_appliance_software 9.16.3.19 Yes
Operating System cisco adaptive_security_appliance_software 9.16.3.23 Yes
Operating System cisco adaptive_security_appliance_software 9.16.4 Yes
Operating System cisco adaptive_security_appliance_software 9.16.4.9 Yes
Operating System cisco adaptive_security_appliance_software 9.16.4.14 Yes
Operating System cisco adaptive_security_appliance_software 9.17.1 Yes
Operating System cisco adaptive_security_appliance_software 9.17.1.7 Yes
Operating System cisco adaptive_security_appliance_software 9.17.1.9 Yes
Operating System cisco adaptive_security_appliance_software 9.17.1.10 Yes
Operating System cisco adaptive_security_appliance_software 9.17.1.11 Yes
Operating System cisco adaptive_security_appliance_software 9.17.1.13 Yes
Operating System cisco adaptive_security_appliance_software 9.17.1.15 Yes
Operating System cisco adaptive_security_appliance_software 9.17.1.20 Yes
Operating System cisco adaptive_security_appliance_software 9.17.1.30 Yes
Operating System cisco adaptive_security_appliance_software 9.18.1 Yes
Operating System cisco adaptive_security_appliance_software 9.18.1.3 Yes
Operating System cisco adaptive_security_appliance_software 9.18.2 Yes
Operating System cisco adaptive_security_appliance_software 9.18.2.5 Yes
Operating System cisco adaptive_security_appliance_software 9.18.2.7 Yes
Operating System cisco adaptive_security_appliance_software 9.18.2.8 Yes
Operating System cisco adaptive_security_appliance_software 9.18.3 Yes
Operating System cisco adaptive_security_appliance_software 9.19.1 Yes
Operating System cisco adaptive_security_appliance_software 9.19.1.5 Yes
Application cisco firepower_threat_defense 6.2.3.16 Yes
Application cisco firepower_threat_defense 6.2.3.17 Yes
Application cisco firepower_threat_defense 6.2.3.18 Yes
Application cisco firepower_threat_defense 6.4.0.10 Yes
Application cisco firepower_threat_defense 6.4.0.11 Yes
Application cisco firepower_threat_defense 6.4.0.12 Yes
Application cisco firepower_threat_defense 6.4.0.13 Yes
Application cisco firepower_threat_defense 6.4.0.14 Yes
Application cisco firepower_threat_defense 6.4.0.15 Yes
Application cisco firepower_threat_defense 6.4.0.16 Yes
Application cisco firepower_threat_defense 6.6.1 Yes
Application cisco firepower_threat_defense 6.6.3 Yes
Application cisco firepower_threat_defense 6.6.4 Yes
Application cisco firepower_threat_defense 6.6.5 Yes
Application cisco firepower_threat_defense 6.6.5.1 Yes
Application cisco firepower_threat_defense 6.6.5.2 Yes
Application cisco firepower_threat_defense 6.6.7 Yes
Application cisco firepower_threat_defense 6.6.7.1 Yes
Application cisco firepower_threat_defense 6.7.0 Yes
Application cisco firepower_threat_defense 6.7.0.1 Yes
Application cisco firepower_threat_defense 6.7.0.2 Yes
Application cisco firepower_threat_defense 6.7.0.3 Yes
Application cisco firepower_threat_defense 7.0.0 Yes
Application cisco firepower_threat_defense 7.0.0.1 Yes
Application cisco firepower_threat_defense 7.0.1 Yes
Application cisco firepower_threat_defense 7.0.1.1 Yes
Application cisco firepower_threat_defense 7.0.2 Yes
Application cisco firepower_threat_defense 7.0.2.1 Yes
Application cisco firepower_threat_defense 7.0.3 Yes
Application cisco firepower_threat_defense 7.0.4 Yes
Application cisco firepower_threat_defense 7.0.5 Yes
Application cisco firepower_threat_defense 7.1.0 Yes
Application cisco firepower_threat_defense 7.1.0.1 Yes
Application cisco firepower_threat_defense 7.1.0.2 Yes
Application cisco firepower_threat_defense 7.1.0.3 Yes
Application cisco firepower_threat_defense 7.2.0 Yes
Application cisco firepower_threat_defense 7.2.0.1 Yes
Application cisco firepower_threat_defense 7.2.1 Yes
Application cisco firepower_threat_defense 7.2.2 Yes
Application cisco firepower_threat_defense 7.2.3 Yes
Application cisco firepower_threat_defense 7.3.0 Yes
Application cisco firepower_threat_defense 7.3.1 Yes
Application cisco firepower_threat_defense 7.3.1.1 Yes
References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.