A Denial of Service (DoS) issue has been discovered in GitLab CE/EE affecting all versions starting from 7.14.1 prior to 17.3.7, 17.4 prior to 17.4.4, and 17.5 prior to 17.5.2. This vulnerability allows attackers to disrupt service by importing maliciously crafted content using the Fogbugz importer. The severity of this vulnerability is classified as medium, with a CVSS score of 6.5.
Risk to organizations includes potential downtime and service disruptions that could impact user access and operations. Given that the vulnerability is present in widely used versions of GitLab, the risk is significant.
Currently, exploitation status indicates that there is a known proof of concept available on GitHub. Organizations should prioritize patching immediately to prevent any service interruption.
The publication date for this vulnerability was February 7, 2025, and it requires prompt attention due to the potential for exploitation.
Vulnerability Details
This vulnerability allows attackers to cause a denial of service by importing maliciously crafted content using the Fogbugz importer. The affected products include GitLab CE/EE versions ranging from 7.14.1 to 17.5.2.
The CVSS score of 6.5 indicates medium severity, with an impact primarily on availability. The attack vector is network-based, requiring low complexity and low privileges to exploit.
The CWEs related to this vulnerability include CWE-770, which indicates a failure to validate input or lack of sanitization that can lead to denial of service.
Technical Analysis
The root cause of this vulnerability is the lack of proper validation and sanitization of content imported through the Fogbugz importer. Attackers may leverage this weakness by crafting specific payloads that exploit the import functionality, leading to a denial of service.
The attack vector is network-based, meaning that the attacker does not need physical access to the machine and can exploit the vulnerability remotely. The attack complexity is low, and the privileges required are also low, making exploitation easier.
There is no user interaction required for exploitation, which increases the risk as it allows for automated attacks. The availability impact is high, meaning successful exploitation could lead to significant downtime for affected services.
Risk & Impact Analysis
Real-world deployment risk for this vulnerability is significant, as it affects a wide range of GitLab versions used by numerous organizations. The potential for service disruption could lead to financial loss and reputational damage.
Organizations must assess the exposure of their services to this vulnerability and take immediate action to mitigate risks. The blast radius could extend to all users accessing the affected GitLab instances, highlighting the urgency of addressing this vulnerability.
Given the CVSS score and the fact that it is not included in the KEV catalog, organizations should still treat this vulnerability with a high priority due to its potential impact.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions include GitLab CE/EE versions starting from 7.14.1 prior to 17.3.7, 17.4 prior to 17.4.4, and 17.5 prior to 17.5.2. Organizations using these versions should take immediate steps to update.
Mitigation & Remediation
Organizations must prioritize patching to mitigate this vulnerability. The latest versions to upgrade to are GitLab 17.5.2, 17.4.4, and 17.3.7. If an immediate upgrade is not possible, organizations should implement configuration hardening practices, including disabling the Fogbugz importer until the patch is applied.
Additional monitoring and logging should be implemented to detect any attempts to exploit this vulnerability or unusual behavior in the application.
Continuous security testing may also be beneficial to ensure that any vulnerabilities are identified and remediated quickly.
Detection Guidance
Organizations should monitor logs for indicators of exploitation attempts, including failed imports and related error messages. Behavioral anomalies such as unusual spikes in resource usage or service downtime should also be investigated.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability is underscored by the importance of maintaining robust validation and sanitization processes for user inputs, especially in import functionalities. This incident serves as a reminder of the potential pitfalls in application security.
Organizations should also be aware of patterns that emerge from vulnerabilities like this, particularly as they relate to denial of service attacks. The lessons learned from this incident can be applied to enhance security measures across various applications.
To further strengthen defenses, organizations are encouraged to engage in penetration testing and regularly review their security posture.
Additionally, organizations should consider leveraging vulnerability management programs to proactively address security weaknesses.
This vulnerability highlights the need for continuous vigilance and proactive measures to safeguard applications against evolving threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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