CVE-2018-3710 in Enterprise Edition
Summary
by MITRE
Gitlab Community and Enterprise Editions version 10.3.3 is vulnerable to an Insecure Temporary File in the project import component resulting remote code execution.
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Analysis
by VulDB Data Team • 02/22/2023
The vulnerability identified as CVE-2018-3710 affects GitLab Community and Enterprise Editions version 10.3.3 and represents a critical security flaw in the project import functionality. This issue stems from improper handling of temporary files during the import process, creating a dangerous condition that allows remote attackers to execute arbitrary code on the target system. The vulnerability specifically impacts the project import component where GitLab processes external project archives, making it a significant concern for organizations relying on GitLab for version control and collaboration.
The technical implementation of this vulnerability involves the insecure creation and handling of temporary files within GitLab's import mechanism. When users attempt to import projects from external sources, the system generates temporary files to store intermediate data during the import process. However, the vulnerability arises because these temporary files are created with predictable names and locations, allowing attackers to manipulate the import process by placing malicious content in these locations. This flaw directly maps to CWE-377, which addresses insecure temporary file creation practices, and represents a classic example of how improper file handling can lead to privilege escalation and arbitrary code execution.
The operational impact of this vulnerability extends beyond simple remote code execution, as it provides attackers with complete control over the GitLab server. Successful exploitation allows adversaries to execute commands with the privileges of the GitLab service account, potentially leading to full system compromise. Attackers can leverage this vulnerability to install backdoors, exfiltrate sensitive data, modify existing projects, or use the compromised server as a launchpad for further attacks within the network. The remote nature of this vulnerability means that attackers do not require physical access or prior authentication to exploit the flaw, making it particularly dangerous in environments where GitLab servers are exposed to untrusted networks.
Organizations affected by CVE-2018-3710 should immediately implement multiple layers of defense to protect their systems. The primary mitigation involves upgrading to GitLab version 10.3.4 or later, which includes patches addressing the insecure temporary file handling. Additionally, administrators should consider implementing network segmentation to limit access to GitLab servers, enforcing strict firewall rules, and monitoring import activities for suspicious patterns. The vulnerability aligns with ATT&CK technique T1059, which covers command and scripting interpreter usage, as the exploitation results in command execution capabilities. Security teams should also conduct thorough audits of their GitLab configurations and implement logging mechanisms to detect potential exploitation attempts, as this vulnerability can be used to maintain persistence within compromised environments.