GHSA-cfgp-2977-2fmm
Connection confusion in gRPC
At a glance
- Published
- Updated
- CVE
- CVE-2023-32731
- Aliases
- PYSEC-2026-1427
- CVSS_V3
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
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.
Affected packages
| Package | Versions |
|---|---|
| Maven · io.grpc:grpc-protobuf | introduced 1.53.0, fixed 1.53.1 |
| PyPI · grpcio | introduced 1.53.0, fixed 1.53.1 |
| RubyGems · grpc | introduced 1.53.0, fixed 1.53.1 |
| PyPI · grpcio | introduced 1.54.0, fixed 1.54.2 |
| RubyGems · grpc | introduced 1.54.0, fixed 1.54.2 |
| Maven · io.grpc:grpc-protobuf | introduced 1.54.0, fixed 1.54.2 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2023-32731 ADVISORY
- https://github.com/grpc/grpc/issues/33463 WEB
- https://github.com/grpc/grpc/pull/32309 WEB
- https://github.com/grpc/grpc/pull/33005 WEB
- https://github.com/grpc/grpc/commit/29d8beee0ac2555773b2a2dda5601c74a95d6c10 WEB
- https://github.com/grpc/grpc/commit/65a2a895afaf1d2072447b9baf246374b182a946 WEB
- https://github.com/grpc/grpc/releases/tag/v1.53.1 WEB
- https://github.com/grpc/grpc/releases/tag/v1.54.2 WEB
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/grpc/CVE-2023-32731.yml WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |