CVE-2024-7246 (GCVE-0-2024-7246)

Vulnerability from cvelistv5 – Published: 2024-08-06 10:14 – Updated: 2024-08-06 13:17
VLAI
Title
HPACK table poisoning in gRPC C++, Python & Ruby
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.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-440 - Expected Behavior Violation
Assigner
References
Impacted products
Vendor Product Version
Google gRPC Affected: 1.53.0 (custom)
Affected: 1.53.1 (custom)
Affected: 1.53.2 (custom)
Affected: 1.54.0 (custom)
Affected: 1.54.1 (custom)
Affected: 1.54.3 (custom)
Affected: 1.55.0 (custom)
Affected: 1.55.1 (custom)
Affected: 1.55.3 (custom)
Affected: 1.55.4 (custom)
Affected: 1.56.0 (custom)
Affected: 1.56.1 (custom)
Affected: 1.56.2 (custom)
Affected: 1.56.3 (custom)
Affected: 1.56.4 (custom)
Affected: 1.57.0 (custom)
Affected: 1.57.1 (custom)
Affected: 1.58.0 (custom)
Affected: 1.58.1 (custom)
Affected: 1.58.2 (custom)
Affected: 1.59.0 (custom)
Affected: 1.59.1 (custom)
Affected: 1.59.2 (custom)
Affected: 1.59.3 (custom)
Affected: 1.59.4 (custom)
Affected: 1.60.0 (custom)
Affected: 1.60.1 (custom)
Affected: 1.61.0 (custom)
Affected: 1.61.1 (custom)
Affected: 1.62.0 (custom)
Affected: 1.61.2 (custom)
Affected: 1.62.1 (custom)
Affected: 1.62.2 (custom)
Affected: 1.63.0 (custom)
Affected: 1.63.1 (custom)
Affected: 1.64.0 (custom)
Affected: 1.64.1 (custom)
Affected: 1.64.2 (custom)
Affected: 1.65.0 (custom)
Affected: 1.65.1 (custom)
Affected: 1.65.2 (custom)
Affected: 1.65.3 (custom)
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-19T00:40:48+00:00",
      "cve": "CVE-2024-7246",
      "id": "CVE-2024-7246",
      "initial_release_date": "2024-08-06T00:00:00+00:00",
      "product_status:fixed": "46",
      "product_status:known_affected": "1",
      "product_status:known_not_affected": "4660",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "grpc: client communicating with a HTTP/2 proxy can poison the HPACK table between the proxy and the backend",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-7246.json",
      "version": "3"
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It\u0027s also possible to use this vulnerability to leak other clients HTTP header keys, but not values.\\n\\nThis 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.\\n\\nPlease 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.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eIt\u0027s 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. 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