In versions 3.1.0 and lower of the Splunk Supporting Add-on for Active Directory, also known as SA-ldapsearch, a vulnerable regular expression pattern could lead to a Regular Expression Denial of Service (ReDoS) attack. This vulnerability, classified as medium severity, poses a risk to organizations utilizing this add-on in their Active Directory environments. With a CVSS score of 6.5, the exploitability and potential impact on availability necessitate attention from security teams.
Risk to organizations includes potential downtime and service disruption, emphasizing the urgency for defenders to assess their environments. Currently, this vulnerability is marked as deferred, indicating it may not have received immediate remediation attention. Nevertheless, organizations should remain vigilant and prepare for possible future updates.
With no public exploit confirmed and not being actively exploited in the wild, the immediate threat level may appear lower; however, organizations should not take this lightly. The nature of ReDoS attacks means that even a small vulnerability can have significant repercussions if exploited effectively.
Organizations using this add-on should prioritize patching immediately, ensuring that they are not left vulnerable to possible service disruptions.
Vulnerability Details
In versions 3.1.0 and lower of the Splunk Supporting Add-on for Active Directory, also known as SA-ldapsearch, a vulnerable regular expression pattern could lead to a Regular Expression Denial of Service (ReDoS) attack. The CVSS score for this vulnerability is 6.5, indicating a medium severity level, which requires organizations to be aware of the implications of this vulnerability on their systems.
The vulnerability impacts the availability of the service, with a high potential for denial of service attacks. The attack vector is network-based, with a low attack complexity. Attackers require low privileges and user interaction is not necessary. The vulnerability's CWE classification is CWE-1333.
Technical Analysis
The root cause of this vulnerability stems from the use of a vulnerable regular expression pattern in the SA-ldapsearch add-on. This design flaw allows attackers to craft inputs that trigger excessive backtracking when the regular expression is evaluated, ultimately leading to significant performance degradation or service outages.
The attack vector is network-based, meaning that an attacker can exploit this vulnerability remotely without physical access to the system. The attack complexity is low, as it does not require sophisticated techniques to exploit. Furthermore, the privileges required to execute this attack are low, making this vulnerability even more concerning. No user interaction is needed, which allows attackers to launch attacks without any actions from legitimate users.
The impact on availability is high, with the potential for the service to become unavailable due to the ReDoS attack. The confidentiality and integrity impacts are rated as none, indicating that sensitive information is not at risk through this specific vulnerability.
Risk & Impact Analysis
Real-world deployment risk is significant for organizations using the Splunk Supporting Add-on for Active Directory. The Regular Expression Denial of Service (ReDoS) vulnerability could lead to downtime, impacting business operations and user access to critical services. This vulnerability matters to organizations as it highlights the importance of ensuring the robustness of components interacting with Active Directory.
The blast radius potential is concerning, especially for large enterprises with multiple systems relying on the Splunk add-on. The urgency of addressing this vulnerability is moderate, as it is classified with a CVSS score of 6.5. Organizations should consider this vulnerability in their patching cycles and prioritize it appropriately.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
Affected versions include 3.1.0 and lower of the Splunk Supporting Add-on for Active Directory. Organizations should ensure they are using a patched version to mitigate this vulnerability.
Mitigation & Remediation
Organizations should prioritize patching immediately. Ensure that you are using the latest version of the Splunk Supporting Add-on for Active Directory to avoid the ReDoS vulnerability. If a patch is unavailable, consider implementing configuration hardening techniques and network controls to limit exposure to potential attacks. Regularly review your security posture and apply continuous penetration testing to identify similar weaknesses through penetration testing.
Detection Guidance
Monitor logs for indicators of service disruptions or abnormal patterns that may indicate exploitation attempts. Look for behavioral anomalies, such as increased latency in service responses or unexpected resource consumption. Network signatures that identify unusual traffic patterns targeting the SA-ldapsearch functionality should also be established to enhance detection capabilities.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-0367 lies in its potential to disrupt services that rely on regular expressions for processing user input. Security teams must recognize patterns whereby improperly validated inputs can lead to Denial of Service conditions. This incident highlights the critical need for robust security testing within the software development life cycle, emphasizing the importance of penetration testing methodologies to identify and rectify vulnerabilities before they can be exploited.
As organizations adopt more complex systems, the lessons learned from vulnerabilities like this will inform better security practices and incident response strategies. Security teams must remain vigilant, prioritizing continuous assessments and remediation efforts to stay ahead of potential threats. For further insights, refer to our resources on vulnerability management and incident response.
Stay informed about emerging threats and ensure that your security posture aligns with best practices by utilizing resources such as our continuous penetration testing services.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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