CVE-2023-27904 : Exploit Details and Defense Strategies

This CVE record was assigned by Jenkins and published on March 8, 2023. It pertains to Jenkins software and highlights a vulnerability that could potentially reveal sensitive information to attackers.

Understanding CVE-2023-27904

This section delves into the details of CVE-2023-27904, shedding light on the vulnerability, its impact, affected systems, and mitigation strategies.

What is CVE-2023-27904?

CVE-2023-27904 affects Jenkins versions 2.393 and earlier, LTS 2.375.3 and earlier. It involves the printing of an error stack trace on agent-related pages when agent connections are broken. This action could disclose Jenkins configuration details that may otherwise remain hidden from attackers, posing a security risk.

The Impact of CVE-2023-27904

The vulnerability in Jenkins could provide attackers with access to sensitive information about the Jenkins configuration. This breach could potentially be exploited to launch further attacks on the system or compromise its integrity.

Technical Details of CVE-2023-27904

This section outlines the technical aspects of CVE-2023-27904, including the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

Jenkins versions 2.393 and earlier, as well as LTS 2.375.3 and earlier, are susceptible to exposing sensitive information through error stack traces on agent-related pages. Attackers could leverage this to gain insights into the Jenkins configuration, opening avenues for potential security breaches.

Affected Systems and Versions

The vulnerability impacts Jenkins versions 2.393 and earlier, LTS 2.375.3 and earlier. Systems running these versions are at risk of information exposure due to error stack traces being displayed on agent-related pages.

Exploitation Mechanism

By exploiting the error stack trace issue on agent-related pages in vulnerable Jenkins versions, attackers can glean essential Jenkins configuration details, which could aid them in launching targeted attacks or unauthorized access.

Mitigation and Prevention

In light of CVE-2023-27904, it is crucial to implement immediate steps to address the vulnerability and prevent potential security threats. Long-term security practices and patching updates are essential for safeguarding systems against such vulnerabilities.

Immediate Steps to Take

Users of Jenkins should update their software to non-vulnerable versions, ensuring that error stack traces are not leaked on agent-related pages. Additionally, monitoring and restricting access to sensitive information can help mitigate the risk of data exposure.

Long-Term Security Practices

Adopting robust security practices, such as regular security audits, network monitoring, access control measures, and employee awareness training, can bolster the overall security posture of Jenkins environments and prevent similar vulnerabilities from being exploited.

Patching and Updates

Staying current with Jenkins updates and security patches is critical for mitigating vulnerabilities like CVE-2023-27904. Regularly checking for software updates and promptly applying patches issued by Jenkins can help protect systems from potential exploits and security breaches.