CVE-2024-7246

MEDIUM EPSS 12.9%
Published Aug 6, 20241y ago · Modified Jun 17, 20261w ago
6.3 CVSS 4.0
Medium
Find Similar
Published Aug 6, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

It's 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. It's 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.

CVSS Details

Base Score
6.3
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
12.9% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-440

Affected Products 8

VendorProductVersionRange
grpcgrpc* <1.58.3
grpcgrpc*≥1.59.0  –  <1.59.5
grpcgrpc*≥1.60.0  –  <1.60.2
grpcgrpc*≥1.61.0  –  <1.61.3
grpcgrpc*≥1.62.0  –  <1.62.3
grpcgrpc*≥1.63.0  –  <1.63.2
grpcgrpc*≥1.64.0  –  <1.64.3
grpcgrpc*≥1.65.0  –  <1.65.4

References 1

  • github.com https://github.com/grpc/grpc/issues/36245
    ExploitIssue TrackingPatch

Remediation

  • github.com https://github.com/grpc/grpc/issues/36245
    ExploitIssue TrackingPatch