The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learningUpgrade go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp
to version 0.44.0 or higher.
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling when the otelhttp.NewHandler
wrapper is used and no filtering is applied to unknown HTTP methods or User agents at the CDN, LB, or previous middleware levels. An attacker can cause the server's potential memory exhaustion by sending numerous malicious requests with random and long HTTP User-Agent or HTTP method values.
Note:
This is only exploitable if the program does not filter any unknown HTTP methods or User agents on the level of CDN, LB, previous middleware, etc.
Mitigation:
This vulnerability can be mitigated by using otelhttp.WithFilter()
, which requires manual configuration to not log certain requests entirely. For convenience and safe usage of this library, it should by default mark with the label unknown
non-standard HTTP methods and User agents to show that such requests were made but do not increase cardinality.