CVE-2024-7246

Summary

It's possible for a gRPC client communicating with a HTTP/2 proxy to poison the HPACK table between the proxy and the backend such that other clients see failed requests. It's also possible to use this vulnerability to leak other clients HTTP header keys, but not values.

This occurs because the error status for a misencoded header is not cleared between header reads, resulting in subsequent (incrementally indexed) added headers in the first request being poisoned until cleared from the HPACK table.

Please update to a fixed version of gRPC as soon as possible. This bug has been fixed in 1.58.3, 1.59.5, 1.60.2, 1.61.3, 1.62.3, 1.63.2, 1.64.3, 1.65.4.

Affected Software

VendorProductVersion RangeStatus
GooglegRPC1.53.0affected
GooglegRPC1.53.1affected
GooglegRPC1.53.2affected
GooglegRPC1.54.0affected
GooglegRPC1.54.1affected
GooglegRPC1.54.3affected
GooglegRPC1.55.0affected
GooglegRPC1.55.1affected
GooglegRPC1.55.3affected
GooglegRPC1.55.4affected
GooglegRPC1.56.0affected
GooglegRPC1.56.1affected
GooglegRPC1.56.2affected
GooglegRPC1.56.3affected
GooglegRPC1.56.4affected
GooglegRPC1.57.0affected
GooglegRPC1.57.1affected
GooglegRPC1.58.0affected
GooglegRPC1.58.1affected
GooglegRPC1.58.2affected
GooglegRPC1.59.0affected
GooglegRPC1.59.1affected
GooglegRPC1.59.2affected
GooglegRPC1.59.3affected
GooglegRPC1.59.4affected
GooglegRPC1.60.0affected
GooglegRPC1.60.1affected
GooglegRPC1.61.0affected
GooglegRPC1.61.1affected
GooglegRPC1.62.0affected
GooglegRPC1.61.2affected
GooglegRPC1.62.1affected
GooglegRPC1.62.2affected
GooglegRPC1.63.0affected
GooglegRPC1.63.1affected
GooglegRPC1.64.0affected
GooglegRPC1.64.1affected
GooglegRPC1.64.2affected
GooglegRPC1.65.0affected
GooglegRPC1.65.1affected
GooglegRPC1.65.2affected
GooglegRPC1.65.3affected

Weaknesses

  • CWE-440: CWE-440: Expected Behavior Violation

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References