GHSA-cfgp-2977-2fmm
Suggest an improvement- Source
- https://github.com/advisories/GHSA-cfgp-2977-2fmm
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/07/GHSA-cfgp-2977-2fmm/GHSA-cfgp-2977-2fmm.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-cfgp-2977-2fmm
- Aliases
- Related
- Published
- 2023-07-05T19:12:51Z
- Modified
- 2025-08-13T15:20:19.517640Z
- Severity
-
- 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
- Summary
- Connection confusion in gRPC
- Details
-
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.
- Database specific
{ "nvd_published_at": "2023-06-09T11:15:09Z", "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2023-07-05T20:26:48Z", "cwe_ids": [ "CWE-440" ] }- References
-
- https://nvd.nist.gov/vuln/detail/CVE-2023-32731
- https://github.com/grpc/grpc/issues/33463
- https://github.com/grpc/grpc/pull/32309
- https://github.com/grpc/grpc/pull/33005
- https://github.com/grpc/grpc/commit/29d8beee0ac2555773b2a2dda5601c74a95d6c10
- https://github.com/grpc/grpc/commit/65a2a895afaf1d2072447b9baf246374b182a946
- https://github.com/grpc/grpc/releases/tag/v1.53.1
- https://github.com/grpc/grpc/releases/tag/v1.54.2
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/grpc/CVE-2023-32731.yml
Affected packages
Maven
io.grpc:grpc-protobuf
Package
- Name
- io.grpc:grpc-protobuf
- View open source insights on deps.dev
- Purl
- pkg:maven/io.grpc/grpc-protobuf
io.grpc:grpc-protobuf
Package
- Name
- io.grpc:grpc-protobuf
- View open source insights on deps.dev
- Purl
- pkg:maven/io.grpc/grpc-protobuf
PyPI
grpcio
Package
- Name
- grpcio
- View open source insights on deps.dev
- Purl
- pkg:pypi/grpcio
grpcio
Package
- Name
- grpcio
- View open source insights on deps.dev
- Purl
- pkg:pypi/grpcio