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RUSTSEC-2025-0015
No affected components available
Prior to version 0.10.3, the built-in clients of the web-push crate
eagerly allocated memory based on the Content-Length header returned by the
Web Push endpoint. Malicious Web Push endpoints could return a large
Content-Length without ever having to send as much data, leading to
denial of service by memory exhaustion.
Services providing Web Push notifications typically allow the user to register an arbitrary endpoint, so the endpoint should not be trusted.
The fixed version 0.10.3 now limits the amount of memory it will allocate for each response, limits the amount of data it will read from the endpoint, and returns an error if the endpoint sends too much data.
As before, it is recommended that services add a timeout for each request to Web Push endpoints.
Measures severity based on intrinsic characteristics of the vulnerability, independent of environment.
No exploitation activity has been observed at this time. Continue routine monitoring.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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