CVE-2022-41721

Summary

A request smuggling attack is possible when using MaxBytesHandler. When using MaxBytesHandler, the body of an HTTP request is not fully consumed. When the server attempts to read HTTP2 frames from the connection, it will instead be reading the body of the HTTP request, which could be attacker-manipulated to represent arbitrary HTTP2 requests.

Affected Software

VendorProductVersion RangeStatus
golang.org/x/netgolang.org/x/net/http2/h2c0.0.0-20220524220425-1d687d428aca < 0.1.1-0.20221104162952-702349b0e862affected

Weaknesses

  • CWE 444: Inconsistent Interpretation of HTTP Requests ("HTTP Request/Response Smuggling)

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: yes
    • Technical Impact: partial

References