CVE-2023-33953

2023-08-1104:48:47

redhat.com

access.redhat.com

vulnerability

grpc lib

hpack table

disconnects

clients

servers

memory consumption

cpu consumption

hpack parser

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

7.2

Confidence

High

EPSS

0.001

Percentile

32.9%

JSON

A flaw was found in the gRPC lib. This vulnerability allows hpack table accounting errors that could lead to unwanted disconnects between clients and servers in exceptional cases. This issue leads to Unbounded memory buffering in the HPACK parser and Unbounded CPU consumption in the HPACK parser.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.