CVE-2023-32732
published 2023-06-09CVE-2023-32732: 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…
PriorityP425medium5.3CVSS 3.1
AVNACLPRNUINSUCNINAL
EPSS
0.53%
41.1th percentile
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
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | grpc | — | — |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| grpc | >= 1.53 < 1.54 | 1.54 | |
| grpc | grpc | < 1.53.0 | 1.53.0 |
| grpc | grpc | >= 1.53.0 < 1.53.1 | 1.53.1 |
| grpc | grpc | >= 1.54.0 < 1.54.2 | 1.54.2 |
| msrc | azl3_grpc_1.42.0-7_on_azure_linux_3.0 | — | — |
| msrc | azl3_python-tensorboard_2.16.2-6_on_azure_linux_3.0 | — | — |
| msrc | azl3_tensorflow_2.16.1-9_on_azure_linux_3.0 | — | — |
| msrc | azure_linux_3.0_arm | — | — |
| msrc | azure_linux_3.0_x64 | — | — |
| msrc | cbl2_python-tensorboard_2.11.0-3_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_tensorflow_2.11.1-2_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
osv5.3MEDIUM
vendor_debian5.3MEDIUM
vendor_msrc5.3MEDIUM
vendor_redhat5.3MEDIUM
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Microsoft
Denial-of-Service in gRPC
vendor_msrc·2023-06-13·CVSS 5.3
CVE-2023-32732 [MEDIUM] CWE-440 Denial-of-Service in gRPC
Denial-of-Service in gRPC
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/azure/a
Red Hat
gRPC: denial of service
vendor_redhat·2023-06-09·CVSS 5.3
CVE-2023-32732 [MEDIUM] CWE-440 gRPC: denial of service
gRPC: denial of service
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
A flaw was found in gRPC, which is vulnerable to a denial of service, caused by a base64 encoding error for "-bin" suffixed headers. By sending a specially crafted request, a remote attacker can cause a termination of the connection between an HTTP2 proxy and a gRPC server, resulting in a denial of service.
Package: grpc (Red Hat OpenShift Container Platform 4) - Will not fix
Debian
CVE-2023-32732: grpc - gRPC contains a vulnerability whereby a client can cause a termination of connec...
vendor_debian·2023·CVSS 5.3
CVE-2023-32732 [MEDIUM] CVE-2023-32732: grpc - gRPC contains a vulnerability whereby a client can cause a termination of connec...
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
Scope: local
bookworm: open
bullseye: open
forky: open
sid: open
trixie: open
OSV
gRPC connection termination issue
osv·2023-07-06
CVE-2023-32732 [MEDIUM] gRPC connection termination issue
gRPC connection termination issue
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.
GHSA
gRPC connection termination issue
ghsa·2023-07-06
CVE-2023-32732 [MEDIUM] CWE-440 gRPC connection termination issue
gRPC connection termination issue
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.
OSV
CVE-2023-32732: 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
osv·2023-06-09·CVSS 5.3
CVE-2023-32732 [MEDIUM] CVE-2023-32732: 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
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
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://github.com/grpc/grpc/pull/32309https://lists.fedoraproject.org/archives/list/[email protected]/message/37IDNVY5AWVH7JDMM2SDTL24ZPPZJNSY/https://lists.fedoraproject.org/archives/list/[email protected]/message/VWE44J5FG7THHL7XVEVTNIGEYBNKJBLL/https://github.com/grpc/grpc/pull/32309https://lists.fedoraproject.org/archives/list/[email protected]/message/37IDNVY5AWVH7JDMM2SDTL24ZPPZJNSY/https://lists.fedoraproject.org/archives/list/[email protected]/message/VWE44J5FG7THHL7XVEVTNIGEYBNKJBLL/
2023-06-09
Published