CVE-2024-24787 is a vulnerability affecting Go modules on Darwin, which allows for arbitrary code execution when building a Go module that contains CGO. This issue arises from the usage of the -lto_library flag in a "#cgo LDFLAGS" directive while using the Apple version of ld. The medium severity of this vulnerability, with a CVSS score of 6.4, indicates that it may be exploited under specific conditions.
The vulnerability poses a significant risk to organizations, particularly those employing Go in their development cycles. Attackers may leverage this vulnerability to execute arbitrary code, potentially compromising system integrity and availability. Given the nature of local execution requirements, the risk is heightened for environments where untrusted code is built or executed.
Organizations should prioritize patching immediately to mitigate the risks associated with this vulnerability. Ensuring that Go environments are updated to address this issue will help prevent potential exploits.
As of the latest updates, the vulnerability remains under analysis, but evidence of a proof of concept has been found on GitHub. This proof of concept could potentially aid attackers in developing exploits if not addressed promptly.
Vulnerability Details
The official CVE description states: 'On Darwin, building a Go module which contains CGO can trigger arbitrary code execution when using the Apple version of ld, due to usage of the -lto_library flag in a "#cgo LDFLAGS" directive.' This vulnerability is classified under the CWE as it allows local code execution with high impact on confidentiality, integrity, and availability.
The CVSS score of 6.4 indicates a medium severity level, suggesting that while there is a potential for exploitation, this may require specific conditions to be met. The attack vector is local, with a high attack complexity, necessitating high privileges and no user interaction for exploitation.
The vulnerability was published on May 8, 2024, and remains awaiting further analysis. Organizations utilizing affected Go versions should monitor this vulnerability closely for updates.
Technical Analysis
The root cause of this vulnerability lies in the improper handling of the -lto_library flag in the CGO settings when building with Go on Darwin. This allows for arbitrary code execution by potentially redirecting the linker to execute malicious code embedded within a Go module.
The attack vector is local, meaning that the attacker must have access to the system where the Go module is being built. The attack complexity is high, requiring specific conditions, such as having a Go module that improperly utilizes CGO directives. Privileges required for exploitation are high, indicating that the attacker needs to have significant access rights to execute the attack.
User interaction is not required for exploitation, further increasing the risk as an unattended build process could inadvertently execute malicious code. The impact on confidentiality, integrity, and availability is high, as arbitrary code execution can compromise all three areas.
Risk & Impact Analysis
The real-world deployment risk associated with CVE-2024-24787 is significant, particularly for organizations that build Go modules containing CGO. The potential for arbitrary code execution poses a direct threat to system integrity and could lead to unauthorized access or data breaches.
This vulnerability matters to organizations as it challenges the security of their development environments. The blast radius is considerable, as multiple systems could be affected if a malicious actor successfully exploits this vulnerability during the module building process.
Given the CVSS score of 6.4 and the fact that it is not listed in the KEV catalog, organizations should address this vulnerability in their priority patch cycle. Remediation measures should be enacted to mitigate the risks and enhance overall security posture.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
As of the current reports, all versions prior to vendor patch are affected by CVE-2024-24787. Organizations should ensure they verify their Go module versions and apply necessary updates.
Mitigation & Remediation
To remediate CVE-2024-24787, organizations should follow these steps: apply the latest patches provided by the Go development team, review and update build configurations to eliminate the use of the problematic -lto_library flag, and consider implementing security best practices during the development cycle.
Organizations may also consider conducting a thorough security assessment such as a penetration testing to identify any other vulnerabilities within their Go modules. Implementing network controls and monitoring for abnormal building activity can also help mitigate risks.
Detection Guidance
To detect potential exploitation of CVE-2024-24787, organizations should monitor logs for unusual build activities, such as unexpected executions during the module build process. Behavioral anomalies should be examined to identify any unauthorized code execution.
Network signatures should be updated to capture any unauthorized access attempts during module builds, and system changes should be closely monitored to detect any alterations to the build environment.
AppSecure Threat Intelligence Insight
CVE-2024-24787 represents a concerning trend in the security landscape, highlighting the risks associated with local code execution vulnerabilities. Security teams should take this opportunity to assess their current practices around Go module development and build environments.
The existence of a proof of concept indicates that while this vulnerability is currently not actively exploited, its accessibility could change. Continuous monitoring of the threat landscape is essential to ensure that defenses remain robust.
Organizations should also prioritize education and training for developers on secure coding practices to prevent vulnerabilities in the future. For a comprehensive understanding of threats facing your applications, consider reviewing penetration testing methodologies and approaches that align with best practices.
For organizations leveraging cloud services, it may be beneficial to explore cloud penetration testing to assess the security posture of their services and applications.
By staying informed and proactive, organizations can better defend against potential exploitation of vulnerabilities like CVE-2024-24787.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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