CVE-2023-4785
HIGH7.5EPSS 0.04%Denial of Service Vulnerability in gRPC TCP Server (Posix-compatible platforms)
Published: 9/13/2023Modified: 4/28/2026
Description
Lack of error handling in the TCP server in Google's gRPC starting version 1.23 on posix-compatible platforms (ex. Linux) allows an attacker to cause a denial of service by initiating a significant number of connections with the server. Note that gRPC C++ Python, and Ruby are affected, but gRPC Java, and Go are NOT affected.
Affected packages (3)
- Debian/grpcfrom 0
- PyPI/grpcio>= 1.55.0, < 1.55.3
- RubyGems/grpc>= 1.56.0, < 1.56.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References (13)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2023-4785
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2023-4785
- WEBhttps://github.com/grpc/grpc/pull/33656
- WEBhttps://github.com/grpc/grpc/pull/33667
- WEBhttps://github.com/grpc/grpc/pull/33669
- WEBhttps://github.com/grpc/grpc/pull/33670
- WEBhttps://github.com/grpc/grpc/pull/33672
- WEBhttps://github.com/rubysec/ruby-advisory-db/blob/master/gems/grpc/CVE-2023-4785.yml
- WEBhttps://groups.google.com/g/grpc-io/c/LlLkB1CeE4U
- WEBhttps://rubygems.org/gems/grpc/versions/1.53.2
- WEBhttps://rubygems.org/gems/grpc/versions/1.54.3
- WEBhttps://rubygems.org/gems/grpc/versions/1.55.3
- WEBhttps://rubygems.org/gems/grpc/versions/1.56.2