CVE-2017-17562 is a critical vulnerability discovered in Embedthis GoAhead prior to version 3.6.5. This vulnerability allows remote code execution if the Common Gateway Interface (CGI) is enabled and a CGI program is dynamically linked. The vulnerability arises from the improper initialization of the environment for forked CGI scripts using untrusted HTTP request parameters within the cgiHandler function in cgi.c. When exploited in conjunction with the glibc dynamic linker, attackers can leverage this flaw to execute arbitrary code by utilizing special parameter names such as LD_PRELOAD.
Given the severity of this vulnerability, with a CVSS score of 8.1, it is categorized as high severity. The risk to organizations includes potential unauthorized access and control over affected systems. It is particularly critical that organizations with this software understand the implications of this vulnerability, especially since it can be exploited remotely and requires no special privileges or user interaction.
This vulnerability is actively exploited in the wild, and organizations should prioritize patching immediately. The vulnerability was added to the Known Exploited Vulnerabilities (KEV) catalog on December 10, 2021, emphasizing its significance in the cybersecurity landscape.
It is vital for organizations to stay informed about such vulnerabilities and implement the necessary updates as per vendor instructions. The consequences of neglecting this vulnerability could lead to severe operational impacts.
Vulnerability Details
The official CVE description states that Embedthis GoAhead before 3.6.5 allows remote code execution if CGI is enabled and a CGI program is dynamically linked. This behavior is exploited through untrusted parameters in the cgiHandler function. The CVSS score of 8.1 indicates a high severity level, reflecting the potential for significant security risks. The affected products include Embedthis GoAhead and Oracle Integrated Lights Out Manager versions 3.0 and 4.0.
Technical Analysis
The root cause of this vulnerability stems from the initialization of CGI script environments with untrusted HTTP request parameters. The attack vector for this vulnerability is network-based, with a high attack complexity due to the requirement for specific configurations to be present. Importantly, no privileges are required for exploitation, and user interaction is not necessary.
Exploitation can lead to high impacts on confidentiality, integrity, and availability, as attackers may gain full control over the affected systems. Monitoring for unusual CGI behavior may help in early detection of attempts to exploit this vulnerability.
Risk & Impact Analysis
Organizations using affected versions of Embedthis GoAhead or Oracle Integrated Lights Out Manager should assess their exposure to this vulnerability. Given that it allows for remote code execution, the potential blast radius is extensive, especially for systems that handle sensitive data or critical operations. The urgency for remediation is underscored by its high CVSS score and inclusion in the KEV catalog, which indicates that it is being actively exploited.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The vulnerability affects Embedthis GoAhead versions prior to 3.6.5 and Oracle Integrated Lights Out Manager versions 3.0 and 4.0. Organizations should ensure they are running an updated version to mitigate risks.
Mitigation & Remediation
Organizations should apply updates as specified by the vendor. The recommended action is to upgrade to the latest available version of Embedthis GoAhead and Oracle Integrated Lights Out Manager. If immediate patching is not possible, consider disabling CGI or implementing strict input validation to mitigate exploitation risks.
For further information on security testing, organizations can validate their remediation through penetration testing to identify similar weaknesses.
Detection Guidance
Monitoring for unusual behavior in CGI scripts, suspicious HTTP requests, and changes in system integrity can help detect attempts to exploit this vulnerability. Organizations should maintain detailed logs for analysis and review.
AppSecure Threat Intelligence Insight
This vulnerability highlights the importance of utilizing secure coding practices and maintaining up-to-date software to avoid similar risks. Security teams should prioritize training on vulnerabilities like this to enhance awareness and preparedness.
Organizations can benefit from establishing a comprehensive vulnerability management program to ensure consistent monitoring and remediation of vulnerabilities.
Additionally, implementing regular penetration testing can further enhance security posture.
Finally, organizations should consider leveraging services such as red teaming to uncover hidden vulnerabilities before they can be exploited.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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