CVE-2023-20246 is a medium-severity vulnerability affecting multiple Cisco products, including Snort and Firepower Threat Defense. This vulnerability allows unauthorized access through a flaw in Snort access control policies. Due to a logic error during the population of these policies, an unauthenticated remote attacker could exploit this vulnerability to bypass the configured access control rules on an affected system.
The severity of this vulnerability is reflected in its CVSS score of 5.8, indicating a medium level of risk. Organizations utilizing affected Cisco products should take immediate action to address this vulnerability to prevent unauthorized access. The potential for exploitation underscores the importance of timely remediation.
As of now, there are no known public exploits for this vulnerability, and it has not been categorized as actively exploited. However, the nature of the bug poses real risks to organizations, making it critical for defenders to prioritize patching efforts.
Organizations should assess their current deployments and ensure they have the latest patches applied to mitigate the risk associated with this vulnerability.
Vulnerability Details
The vulnerability is caused by a logic error in the access control policies of Snort, allowing attackers to bypass controls without authentication. This affects various Cisco products that rely on Snort for security.
The vulnerability is officially classified under CWE-290, indicating that it involves authentication issues. It was published on November 1, 2023, and has since been modified, reflecting ongoing work by Cisco to address the issue.
Technical Analysis
The root cause of this vulnerability is a logic error that occurs during the population of access control policies. The attack vector is network-based, and the complexity of the attack is low, requiring no privileges or user interaction. The impact on confidentiality is none, while integrity is rated low, suggesting potential manipulation of data without triggering alarms.
The vulnerability allows attackers to leverage the existing access control model, ultimately bypassing security measures intended to protect sensitive resources. Organizations relying on affected Cisco products must evaluate their configurations to ensure adequate security.
Risk & Impact Analysis
Real-world deployment of this vulnerability poses significant risks, particularly for organizations that heavily depend on Cisco's Snort for network security. The blast radius could encompass critical systems that rely on these access control policies for protection, increasing the urgency for organizations to address this vulnerability promptly.
Given the CVSS score and the potential for exploitation, organizations should prioritize patching this vulnerability immediately. The risk of unauthorized access to sensitive data or systems can have severe implications for business operations and reputation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects multiple versions of Cisco products. Specifically, the vulnerable versions of Snort range from 3.0.0 to below 3.1.57. Additionally, Cisco Firepower Threat Defense versions from 7.0.0 to 7.3.1.1, as well as IOS XE versions starting from 17.12 but below 17.12.2, are affected. Organizations should ensure they are running the latest patched versions.
Mitigation & Remediation
Organizations should prioritize patching the affected Cisco products to mitigate this vulnerability. Regular updates and security patches from Cisco can help ensure systems are protected against known vulnerabilities. If patches are not immediately available, organizations should consider implementing configuration hardening and network controls to restrict access to affected systems.
For detailed guidance on effective security measures, organizations may refer to penetration testing services that can help identify potential weaknesses in their security posture.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual access patterns and behavioral anomalies that could indicate unauthorized access efforts. Implementing network signatures to identify abnormal traffic can also be beneficial.
AppSecure Threat Intelligence Insight
CVE-2023-20246 represents an ongoing challenge for organizations using Cisco’s Snort technology. As attackers continuously evolve their methods, the importance of proactive security measures cannot be overstated. By understanding vulnerabilities like this, security teams can better prepare their defenses.
Organizations should also stay informed about emerging threats and best practices through resources like penetration testing methodology and vulnerability management program design to enhance their security posture.
Furthermore, understanding the landscape of evolving threats enables organizations to implement effective strategies to counteract vulnerabilities and strengthen their defenses.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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