CVE-2025-4444: Tor Onion Service Descriptor resource consumption
A security flaw has been discovered in Tor up to 0.4.7.16/0.4.8.17. Impacted is an unknown function of the component Onion Service Descriptor Handler. Performing manipulation results in resource consumption. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitability is considered difficult. Upgrading to version 0.4.8.18 and 0.4.9.3-alpha is recommended to address this issue. It is recommended to upgrade the affected component.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-4444?
CVE-2025-4444 has a high complexity rating for exploitation due to resource consumption issues.
What versions of Tor are affected by CVE-2025-4444?
CVE-2025-4444 impacts Tor versions up to and including 0.4.7.16 and 0.4.8.17.
How do I fix CVE-2025-4444?
To mitigate CVE-2025-4444, upgrade Tor to a version later than 0.4.8.17.
Can CVE-2025-4444 be exploited remotely?
Yes, CVE-2025-4444 can be exploited remotely, allowing attackers to manipulate the service.
What component of Tor is affected by CVE-2025-4444?
CVE-2025-4444 affects the Onion Service Descriptor Handler component of Tor.