Overview
The CVE-2025-0673 vulnerability is a critical flaw discovered in GitLab CE/EE which, if exploited, could lead to a denial of service (DoS) condition. This vulnerability affects all versions from 17.7 before 17.10.8, 17.11 before 17.11.4, and 18.0 before 18.0.2. The severity of this issue is underscored by its potential to compromise system integrity or result in data leakage.
Vulnerability Summary
CVE ID: CVE-2025-0673
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Denial of Service and potential system compromise or data leakage
Affected Products
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Product | Affected Versions
GitLab CE | 17.7 before 17.10.8
GitLab EE | 17.7 before 17.10.8, 17.11 before 17.11.4, and 18.0 before 18.0.2
How the Exploit Works
An attacker exploiting CVE-2025-0673 can trigger an infinite redirect loop within GitLab’s functionality. This loop consumes resources, potentially leading to a Denial of Service (DoS) condition, rendering the system unresponsive. This exploit could potentially compromise the system or lead to data leakage.
Conceptual Example Code
Here is a conceptual example of how an attacker might exploit this vulnerability using a malicious HTTP request:
GET /vulnerable/redirect HTTP/1.1
Host: victim.example.comThe attacker would craft a URL or control an endpoint which redirects back to itself, thus causing the infinite loop.
Mitigation Guidance
To mitigate this vulnerability, users are advised to apply the vendor-supplied patch as soon as possible. For immediate temporary mitigation, users can employ a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to detect and block attempts to exploit this vulnerability.
