CVE-2025-4444
BaseFortify
Publication date: 2025-09-18
Last updated on: 2025-09-19
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| tor | tor | 0.4.8.18 |
| tor | tor | 0.4.9.3-alpha |
| tor | tor | 0.4.8 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-404 | The product does not release or incorrectly releases a resource before it is made available for re-use. |
| CWE-400 | The product does not properly control the allocation and maintenance of a limited resource. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a security flaw in Tor versions up to 0.4.7.16 and 0.4.8.17, specifically in an unknown function of the Onion Service Descriptor Handler component. An attacker can remotely manipulate this function to cause excessive resource consumption, potentially leading to denial of service or degraded performance. The attack is considered difficult to execute due to its high complexity.
How can this vulnerability impact me? :
The vulnerability can impact you by allowing a remote attacker to cause resource exhaustion on the affected Tor service, which may result in degraded service availability or denial of service. This could disrupt normal operations relying on Tor's onion services.
What immediate steps should I take to mitigate this vulnerability?
Upgrade the affected Tor software to version 0.4.8.18 or 0.4.9.3-alpha as recommended to address the vulnerability.