CVE-2025-61581: Apache Traffic Control Inefficient Regular Expression Complexity Vulnerability
Summary
CVE-2025-61581: Apache Traffic Control has an Inefficient Regular Expression Complexity vulnerability in github.com/apache/trafficcontrol. Affected versions are not published. No fix is published. How to fix ↓
Also tracked for
The same CVE-2025-61581 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
Apache Traffic Control is an open-source software that provides a robust framework for managing and controlling traffic across various networks. It is designed to optimize the delivery of content and ensure efficient routing of requests. The package is widely used in environments that require high availability and performance. However, it is susceptible to vulnerabilities that can affect its efficiency and security, such as the Inefficient Regular Expression Complexity vulnerability.
Vulnerability Detail
The Inefficient Regular Expression Complexity vulnerability in Apache Traffic Control arises from the use of poorly constructed regular expressions that can lead to excessive backtracking. This can result in Denial of Service (DoS) conditions, where the application becomes unresponsive due to the high computational cost of processing certain inputs. Attackers can exploit this vulnerability by crafting specific inputs that trigger the inefficient regex, causing the application to hang or crash.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, you can limit the input size or sanitize inputs to avoid triggering the inefficient regex. Implementing rate limiting on requests that utilize regex processing can also help mitigate the risk until a patch is applied.
Conclusion
The Inefficient Regular Expression Complexity vulnerability in Apache Traffic Control poses a significant risk to applications utilizing this package. It is crucial to address this issue promptly by applying the necessary updates and implementing workarounds to mitigate potential impacts. Regular monitoring for vulnerabilities can help maintain the security and performance of your applications.
See every vulnerability recorded for github.com/apache/trafficcontrol →
FAQ
The vulnerability is related to inefficient regular expressions that can lead to Denial of Service conditions.
If exploited, this vulnerability can cause your application to become unresponsive, impacting availability and performance.
Yes, updating to the latest version of Apache Traffic Control will address this vulnerability.
Implement input size limitations and rate limiting as temporary workarounds until you can apply the patch.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time using just the Gopkg.lock file. You can also check if your application is affected by this vulnerability using the Vulert playground.
Related vulnerabilities
Recent vulnerabilities recorded for github.com/apache/trafficcontrol.
