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CVE-2023-32731

CVE-2023-32731 · Information leak in gRPC

This page contains facts from public vulnerability sources. Check the original advisory before updating.

When gRPC HTTP2 stack raised a header size exceeded error, it skipped parsing the rest of the HPACK frame. This caused any HPACK table mutations to also be skipped, resulting in a desynchronization of HPACK tables between sender and receiver. If leveraged, say, between a proxy and a backend, this could lead to requests from the proxy being interpreted as containing headers from different proxy clients - leading to an information leak that can be used for privilege escalation or data exfiltration. We recommend upgrading beyond the commit contained in  https://github.com/grpc/grpc/pull/33005 https://github.com/grpc/grpc/pull/33005

CVSS 7.4 · High · EPSS 0.5% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • grpc

    Versions
    • ≥ 1.53, ≤ 1.54: Affected (custom)

    No fix published

  • io.grpc:grpc-protobuf Maven

    Versions
    • 1.53.0
    Affected ranges
    • ECOSYSTEM: ≥ 1.53.0, < 1.53.1

    Update to 1.53.1

  • grpcio PyPI

    Versions
    • 1.53.0
    Affected ranges
    • ECOSYSTEM: ≥ 1.53.0, < 1.53.1

    Update to 1.53.1

  • grpc RubyGems

    Versions
    • 1.53.0
    Affected ranges
    • ECOSYSTEM: ≥ 1.53.0, < 1.53.1

    Update to 1.53.1

  • grpcio PyPI

    Versions
    • 1.54.0
    Affected ranges
    • ECOSYSTEM: ≥ 1.54.0, < 1.54.2

    Update to 1.54.2

  • grpc RubyGems

    Versions
    • 1.54.0
    Affected ranges
    • ECOSYSTEM: ≥ 1.54.0, < 1.54.2

    Update to 1.54.2

  • io.grpc:grpc-protobuf Maven

    Versions
    • 1.54.0
    • 1.54.1
    Affected ranges
    • ECOSYSTEM: ≥ 1.54.0, < 1.54.2

    Update to 1.54.2

  • grpcio PyPI

    Versions
    • 1.53.0
    • 1.54.0
    Affected ranges
    • ECOSYSTEM: ≥ 1.53.0, < 1.53.1 ∪ ≥ 1.54.0, < 1.54.2

    Update to 1.53.1; Update to 1.54.2

  • grpc Ubuntu:16.04:LTS

    Versions
    • 0.10.2-1
    • 0.11.1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • grpc Ubuntu:18.04:LTS

    Versions
    • 1.3.2-1
    • 1.3.2-1ubuntu1
    • 1.3.2-1.1~build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • grpc Ubuntu:20.04:LTS

    Versions
    • 1.16.1-1
    • 1.16.1-1ubuntu1
    • 1.16.1-1ubuntu3
    • 1.16.1-1ubuntu4
    • 1.16.1-1ubuntu5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • grpc Ubuntu:22.04:LTS

    Versions
    • 1.30.2-3
    • 1.30.2-3build1
    • 1.30.2-3build3
    • 1.30.2-3build5
    • 1.30.2-3build6
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • grpc Ubuntu:24.04:LTS

    Versions
    • 1.51.1-3build3
    • 1.51.1-3build4
    • 1.51.1-4
    • 1.51.1-4build1
    • 1.51.1-4build2
    • 1.51.1-4.1build3
    • 1.51.1-4.1build4
    • 1.51.1-4.1build5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • grpc Ubuntu:25.10

    Versions
    • 1.51.1-6
    • 1.51.1-6build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • grpc Ubuntu:26.10

    Versions
    • 1.51.1-8ubuntu1
    • 1.51.1-9
    • 1.51.1-9ubuntu3
    • 1.51.1-10ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • grpc Ubuntu:26.04:LTS

    Versions
    • 1.51.1-6build1
    • 1.51.1-7
    • 1.51.1-7ubuntu2
    • 1.51.1-7ubuntu3
    • 1.51.1-8ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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