CVE-2024-8237 in Community Edition
Summary
by MITRE • 11/26/2024
A Denial of Service (DoS) issue has been discovered in GitLab CE/EE affecting all versions prior to 12.6 prior to 17.4.5, 17.5 prior to 17.5.3, and 17.6 prior to 17.6.1. An attacker could cause a denial of service with a crafted cargo.toml file.
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Analysis
by VulDB Data Team • 11/27/2024
The vulnerability identified as CVE-2024-8237 represents a critical denial of service weakness in GitLab Community Edition and Enterprise Edition platforms. This issue specifically targets the handling of cargo.toml files which are used in rust package management systems. The flaw exists in versions prior to 12.6 and affects multiple release branches including versions before 17.4.5, 17.5.3, and 17.6.1, indicating a widespread impact across the GitLab product line. The vulnerability stems from insufficient input validation and sanitization mechanisms within the GitLab codebase when processing these specific file types.
The technical implementation of this vulnerability occurs when GitLab attempts to parse and process maliciously crafted cargo.toml files. These files contain metadata about rust packages and are typically used during dependency resolution and package management operations. The flaw manifests in the parsing logic where the system fails to properly handle malformed or specially constructed cargo.toml content that could trigger resource exhaustion or infinite loop conditions. This allows an attacker to construct a payload that when processed by GitLab's backend systems causes the service to become unresponsive or crash entirely. The vulnerability operates at the application layer and can be exploited through repository uploads or code integration processes where cargo.toml files are parsed.
From an operational perspective this vulnerability presents significant risks to development teams and organizations relying on GitLab for their source code management and CI/CD workflows. The denial of service condition can disrupt continuous integration pipelines, prevent legitimate code deployments, and impact developer productivity across multiple projects. Attackers can exploit this weakness by simply uploading a crafted cargo.toml file to a repository, making the attack vector extremely accessible and low-effort. The impact extends beyond individual repositories as the vulnerability can potentially affect entire GitLab instances, especially in multi-tenant environments where multiple projects share the same infrastructure. Organizations using GitLab for package management or dependency tracking are particularly at risk since these files are commonly encountered during normal development operations.
Mitigation strategies for CVE-2024-8237 should prioritize immediate patching of affected GitLab versions to the recommended secure releases. Organizations should implement network-level controls to restrict access to package management features and monitor for unusual file upload patterns. The implementation of input validation and sanitization measures at the application level can provide additional defense-in-depth. Security teams should also consider implementing automated scanning for potentially malicious cargo.toml files and establish incident response procedures to quickly address exploitation attempts. Organizations should review their GitLab configurations to ensure proper access controls and file validation mechanisms are in place. The vulnerability aligns with CWE-400 which categorizes resource exhaustion issues, and represents a potential ATT&CK technique under T1499 for network denial of service attacks. Regular security assessments and vulnerability management processes should be enhanced to prevent similar issues in the future, particularly focusing on input validation for package metadata files.