CVE-2025-62408
BaseFortify
Publication date: 2025-12-08
Last updated on: 2025-12-08
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| c-ares | c-ares | 1.32.4 |
| c-ares | c-ares | 1.34.5 |
| c-ares | c-ares | 1.34.6 |
| c-ares | c-ares | 1.32.3 |
| c-ares | c-ares | 1.32.5 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-416 | The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the c-ares asynchronous resolver library versions 1.32.3 through 1.34.5. The issue occurs because the library terminates a query after maximum attempts when using the functions read_answer() and process_answer(), which can lead to a Denial of Service (DoS) condition. The problem is fixed in version 1.34.6.
How can this vulnerability impact me? :
The vulnerability can cause a Denial of Service (DoS) by terminating queries prematurely in the c-ares library, potentially disrupting applications or services that rely on asynchronous DNS resolution, leading to service unavailability or degraded performance.
What immediate steps should I take to mitigate this vulnerability?
Upgrade the c-ares library to version 1.34.6 or later, as this version contains the fix for the Denial of Service vulnerability.