CVE-2023-32732
MEDIUM5.3EPSS 0.02%gRPC connection termination issue
Published: 7/6/2023Modified: 4/28/2026
Description
gRPC contains a vulnerability whereby a client can cause a termination of connection between a HTTP2 proxy and a gRPC server: a base64 encoding error for `-bin` suffixed headers will result in a disconnection by the gRPC server, but is typically allowed by HTTP2 proxies. We recommend upgrading beyond the commit in https://github.com/grpc/grpc/pull/32309 https://www.google.com/url
Affected packages (4)
- Debian/grpcfrom 0
- Maven/io.grpc:grpc-protobuf>= 1.53.0, < 1.53.1
- PyPI/grpcio>= 1.53.0, < 1.53.1
- RubyGems/grpc>= 1.53.0, < 1.53.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
References (10)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2023-32732
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2023-32732
- WEBhttps://github.com/grpc/grpc/commit/29d8beee0ac2555773b2a2dda5601c74a95d6c10
- WEBhttps://github.com/grpc/grpc/commit/65a2a895afaf1d2072447b9baf246374b182a946
- WEBhttps://github.com/grpc/grpc/pull/32309
- WEBhttps://github.com/grpc/grpc/releases/tag/v1.53.1
- WEBhttps://github.com/grpc/grpc/releases/tag/v1.54.2
- WEBhttps://github.com/rubysec/ruby-advisory-db/blob/master/gems/grpc/CVE-2023-32732.yml
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/37IDNVY5AWVH7JDMM2SDTL24ZPPZJNSY
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/VWE44J5FG7THHL7XVEVTNIGEYBNKJBLL