On October 16, 2023, a vulnerability was disclosed in the Axis AXIS OS, identified as CVE-2023-21415. This vulnerability allows for path traversal attacks through the VAPIX API overlay_del.cgi, which can lead to unauthorized file deletion. Due to the nature of the vulnerability, it requires authentication with a service account that possesses operator or administrator privileges, limiting the scope of potential attackers.
The vulnerability has a CVSS score of 6.5, categorizing it as medium severity. This score reflects the potential for high availability impact, while confidentiality and integrity impacts are rated as none. The presence of a path traversal flaw in a widely used operating system poses significant risk to organizations relying on these systems, particularly if exploited by malicious actors.
Organizations should prioritize patching AXIS OS to mitigate this vulnerability. Axis has released updated versions that address this flaw, and it is crucial for users to upgrade to these patched versions to ensure system integrity and security.
Given the potential risk, organizations must act promptly. The urgency for remediation is underscored by the need to prevent unauthorized access and file deletion, which could severely disrupt operations and data integrity.
Vulnerability Details
The official description from the Axis security advisory indicates that the flaw exists in the VAPIX API overlay_del.cgi. The vulnerability classification falls under CWE-22 (Improper Limitation of a Pathname to a Restricted Directory) and CWE-35 (Path Traversal). The affected systems include various versions of AXIS OS, specifically those that are vulnerable to path traversal.
Technical Analysis
The root cause of this vulnerability is a failure to properly validate input paths in the overlay_del.cgi API. Attackers can exploit this by manipulating file paths, allowing them to delete arbitrary files on the server. The attack vector is network-based, with low complexity and low privileges required for successful exploitation.
In terms of impacts, while confidentiality and integrity are not affected, the availability impact is high, potentially leading to significant service disruptions. User interaction is not required, and the vulnerability's exploitation can be executed remotely by authenticated users.
Risk & Impact Analysis
The real-world risk associated with CVE-2023-21415 is substantial, particularly for organizations that rely heavily on the AXIS OS for critical operations. Given the nature of the flaw, the blast radius could extend beyond simple file deletions to include broader system vulnerabilities if an attacker gains access to sensitive files.
With a CVSS score of 6.5, organizations should address this vulnerability in their priority patch cycle. Ignoring this flaw could lead to severe operational impacts and data loss.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerable versions of Axis AXIS OS include those from 6.50.5.3 to 6.50.5.14, as well as various LTS versions up to 2022. Organizations should upgrade to the latest patched versions to ensure security.
Mitigation & Remediation
Axis has released patches for the vulnerability in AXIS OS. Organizations should upgrade to the latest versions to mitigate this risk. For detailed remediation steps, refer to the Axis security advisory.
Continuous penetration testing can also help identify similar weaknesses in the system and provide recommendations for enhancing security.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual file deletion activities and validate access controls for operator and administrator accounts.
AppSecure Threat Intelligence Insight
CVE-2023-21415 illustrates the ongoing risks associated with path traversal vulnerabilities. Security teams should enhance their monitoring mechanisms and consider adopting a proactive approach to vulnerability management.
Penetration testing methodologies can be effective in assessing the security posture of applications and identifying such vulnerabilities before they can be exploited.
Implementing a robust vulnerability management program is essential for organizations to stay ahead of emerging threats and improve overall security resilience.
API security assessments should also be part of the strategy to ensure that any API vulnerabilities are identified and remediated promptly.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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