En bref
- CVE-2023-32731 est une vulnérabilité ÉLEVÉE (CVSS 7.5) touchant io.grpc:grpc-protobuf, grpcio, grpc.
- Probabilité d'exploitation dans les 30 prochains jours (EPSS) : 0.50%, plus élevée que 42.7% des vulnérabilités.
- Correctif : mettre à jour vers 1.53.1, 1.54.2, 1.55.0 ou plus récent.
| Package | Affected versions | Patched versions |
|---|
| io.grpc:grpc-protobuf Maven | ≥ 1.53.0, < 1.53.1≥ 1.54.0, < 1.54.2
| 1.53.11.54.2
|
| grpcio PyPI | ≥ 1.53.0, < 1.53.1≥ 1.54.0, < 1.54.2
| 1.53.11.54.2
|
| grpc RubyGems | ≥ 1.53.0, < 1.53.1≥ 1.54.0, < 1.54.2
| 1.53.11.54.2
|
| grpc | ≥ 1.53.0, < 1.55.0
| 1.55.0
|
Description
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.
NVD description
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
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