CVE-2024-7246 - CVE House
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Status published Medium CVE-2024-7246

HPACK table poisoning in gRPC C++, Python & Ruby

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

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Affected Vendor

Affected Software

gRPC
Vulnerable Versions:
1.53.0, 1.53.1, 1.53.2, 1.54.0, 1.54.1, 1.54.3, 1.55.0, 1.55.1, 1.55.3, 1.55.4, 1.56.0, 1.56.1, 1.56.2, 1.56.3, 1.56.4, 1.57.0, 1.57.1, 1.58.0, 1.58.1, 1.58.2, 1.59.0, 1.59.1, 1.59.2, 1.59.3, 1.59.4, 1.60.0, 1.60.1, 1.61.0, 1.61.1, 1.62.0, 1.61.2, 1.62.1, 1.62.2, 1.63.0, 1.63.1, 1.64.0, 1.64.1, 1.64.2, 1.65.0, 1.65.1, 1.65.2, 1.65.3

Timeline

Official Publish: August 6th, 2024
Last Modified: August 6th, 2024
Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-440

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.