CVE Vulnerabilities

CVE-2024-7246

Expected Behavior Violation

Published: Aug 06, 2024 | Modified: Jul 22, 2025
CVSS 3.x
5.3
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.x
RedHat/V2
RedHat/V3
4.8 MODERATE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
Ubuntu
MEDIUM

Its possible for a gRPC client communicating with a HTTP/2 proxy to poison the HPACK table between the proxy and the backend such that other clients see failed requests. Its also possible to use this vulnerability to leak other clients HTTP header keys, but not values.

This occurs because the error status for a misencoded header is not cleared between header reads, resulting in subsequent (incrementally indexed) added headers in the first request being poisoned until cleared from the HPACK table.

Please update to a fixed version of gRPC as soon as possible. This bug has been fixed in 1.58.3, 1.59.5, 1.60.2, 1.61.3, 1.62.3, 1.63.2, 1.64.3, 1.65.4.

Weakness

A feature, API, or function does not perform according to its specification.

Affected Software

Name Vendor Start Version End Version
Grpc Grpc * 1.58.3 (excluding)
Grpc Grpc 1.59.0 (including) 1.59.5 (excluding)
Grpc Grpc 1.60.0 (including) 1.60.2 (excluding)
Grpc Grpc 1.61.0 (including) 1.61.3 (excluding)
Grpc Grpc 1.62.0 (including) 1.62.3 (excluding)
Grpc Grpc 1.63.0 (including) 1.63.2 (excluding)
Grpc Grpc 1.64.0 (including) 1.64.3 (excluding)
Grpc Grpc 1.65.0 (including) 1.65.4 (excluding)
Red Hat Ansible Automation Platform 2.4 for RHEL 8 RedHat python3x-grpcio-0:1.58.3-1.el8ap *
Red Hat Ansible Automation Platform 2.4 for RHEL 9 RedHat python-grpcio-0:1.58.3-1.el9ap *
Red Hat Satellite 6.16 for RHEL 8 RedHat python-grpcio-0:1.65.4-1.el8pc *
Red Hat Satellite 6.16 for RHEL 8 RedHat python-grpcio-0:1.65.4-1.el8pc *
Red Hat Satellite 6.16 for RHEL 9 RedHat python-grpcio-0:1.65.4-1.el9pc *
Red Hat Satellite 6.16 for RHEL 9 RedHat python-grpcio-0:1.65.4-1.el9pc *
RHUI 4 for RHEL 8 RedHat python-grpcio-0:1.65.4-1.el8ui *
Grpc Ubuntu focal *
Grpc Ubuntu oracular *

References