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gRPC connection termination issue

Moderate severity GitHub Reviewed Published Jul 6, 2023 to the GitHub Advisory Database • Updated Nov 11, 2023

Package

bundler grpc (RubyGems)

Affected versions

< 1.53.0

Patched versions

1.53.0
pip grpcio (pip)
< 1.53.0
1.53.0
maven io.grpc:grpc-protobuf (Maven)
< 1.53.0
1.53.0

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 grpc/grpc#32309.

References

Published by the National Vulnerability Database Jun 9, 2023
Published to the GitHub Advisory Database Jul 6, 2023
Reviewed Jul 6, 2023
Last updated Nov 11, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS score

0.074%
(34th percentile)

Weaknesses

CVE ID

CVE-2023-32732

GHSA ID

GHSA-9hxf-ppjv-w6rq

Source code

No known source code

Credits

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