CVE-2023-4785
published 2023-09-13CVE-2023-4785: 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…
PriorityP337high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.67%
47.5th percentile
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
17 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | grpc | — | — |
| grpc | 1.53.0 – 1.53.1 | — | |
| grpc | 1.54.0 – 1.54.2 | — | |
| grpc | 1.55.0 – 1.55.2 | — | |
| grpc | 1.56.0 – 1.56.1 | — | |
| grpc | grpc | — | — |
| grpc | grpc | >= 1.23.0 < 1.53.2 | 1.53.2 |
| grpc | grpc | >= 1.53.0 < 1.53.2 | 1.53.2 |
| grpc | grpc | >= 1.54.0 < 1.54.3 | 1.54.3 |
| grpc | grpc | >= 1.54.0 < 1.54.3 | 1.54.3 |
| grpc | grpc | >= 1.55.0 < 1.55.3 | 1.55.3 |
| grpc | grpc | >= 1.55.0 < 1.55.3 | 1.55.3 |
| grpc | grpc | >= 1.56.0 < 1.56.2 | 1.56.2 |
| msrc | azl3_grpc_1.42.0-7_on_azure_linux_3.0 | — | — |
| msrc | azl3_grpc_1.62.0-2_on_azure_linux_3.0 | — | — |
| msrc | azure_linux_3.0_arm | — | — |
| msrc | azure_linux_3.0_x64 | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
osv7.5HIGH
vendor_debian7.5HIGH
vendor_msrc7.5HIGH
vendor_oracle7.5HIGH
vendor_redhat7.5HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Oracle
Oracle Oracle Analytics Risk Matrix: Analytics Server (gRPC) — CVE-2023-4785
vendor_oracle·2025-01-15·CVSS 7.5
CVE-2023-4785 [HIGH] Oracle Oracle Analytics Risk Matrix: Analytics Server (gRPC) — CVE-2023-4785
Oracle Oracle Analytics Risk Matrix: Analytics Server (gRPC) vulnerability
CVE: CVE-2023-4785
CVSS: 7.5
Protocol: HTTP/2
Remote exploit: Yes
Affected versions: Network
Advisory: cpujan2025 (JAN 2025)
Red Hat
gRPC: file descriptor exhaustion leads to denial of service
vendor_redhat·2023-09-14·CVSS 7.5
CVE-2023-4785 [HIGH] CWE-248 gRPC: file descriptor exhaustion leads to denial of service
gRPC: file descriptor exhaustion leads to denial of service
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.
A flaw was found in gRPC. Lack of error handling in the TCP server in Google's gRPC, starting in version 1.23 on POSIX-compatible platforms (for example, 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.
Package: grpc (Red Hat OpenShift Container
Microsoft
Denial of Service in gRPC Core
vendor_msrc·2023-09-12·CVSS 7.5
CVE-2023-4785 [HIGH] CWE-248 Denial of Service in gRPC Core
Denial of Service in gRPC Core
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Google: Google
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https://learn.microsoft.com/en-us/az
Debian
CVE-2023-4785: grpc - Lack of error handling in the TCP server in Google's gRPC starting version 1.23 ...
vendor_debian·2023·CVSS 7.5
CVE-2023-4785 [HIGH] CVE-2023-4785: grpc - Lack of error handling in the TCP server in Google's gRPC starting version 1.23 ...
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.
Scope: local
bookworm: open
bullseye: open
forky: open
sid: open
trixie: open
GHSA
Denial of Service Vulnerability in gRPC TCP Server (Posix-compatible platforms)
ghsa·2023-09-13
CVE-2023-4785 [HIGH] CWE-248 Denial of Service Vulnerability in gRPC TCP Server (Posix-compatible platforms)
Denial of Service Vulnerability in gRPC TCP Server (Posix-compatible platforms)
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.
OSV
Denial of Service Vulnerability in gRPC TCP Server (Posix-compatible platforms)
osv·2023-09-13
CVE-2023-4785 [HIGH] Denial of Service Vulnerability in gRPC TCP Server (Posix-compatible platforms)
Denial of Service Vulnerability in gRPC TCP Server (Posix-compatible platforms)
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.
OSV
CVE-2023-4785: Lack of error handling in the TCP server in Google's gRPC starting version 1
osv·2023-09-13·CVSS 7.5
CVE-2023-4785 [HIGH] CVE-2023-4785: Lack of error handling in the TCP server in Google's gRPC starting version 1
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.
No detection rules found.
No public exploits indexed.
https://github.com/grpc/grpc/pull/33656https://github.com/grpc/grpc/pull/33667https://github.com/grpc/grpc/pull/33669https://github.com/grpc/grpc/pull/33670https://github.com/grpc/grpc/pull/33672https://github.com/grpc/grpc/pull/33656https://github.com/grpc/grpc/pull/33667https://github.com/grpc/grpc/pull/33669https://github.com/grpc/grpc/pull/33670https://github.com/grpc/grpc/pull/33672
2023-09-13
Published