CVE-2023-32731

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-32731
When gRPC HTTP2 stack raised a header size exceeded error, it skipped parsing the rest of the HPACK frame. This caused any HPACK table mutations to also be skipped, resulting in a desynchronization of HPACK tables between sender and receiver. If leveraged, say, between a proxy and a backend, this could lead to requests from the proxy being interpreted as containing headers from different proxy clients - leading to an information leak that can be used for privilege escalation or data exfiltration. We recommend upgrading beyond the commit contained in  https://github.com/grpc/grpc/pull/33005 https://github.com/grpc/grpc/pull/33005

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/grpc/grpc/pull/32309 Patch
https://github.com/grpc/grpc/pull/33005 Patch
Configurations

Configuration 1 (hide)

cpe:2.3:a:grpc:grpc:*:*:*:*:*:*:*:*
History

15 Jun 2023, 22:18

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.5
First Time Grpc
Grpc grpc
CPE cpe:2.3:a:grpc:grpc:*:*:*:*:*:*:*:*
CWE NVD-CWE-Other
References (MISC) https://github.com/grpc/grpc/pull/33005 - (MISC) https://github.com/grpc/grpc/pull/33005 - Patch
References (MISC) https://github.com/grpc/grpc/pull/32309 - (MISC) https://github.com/grpc/grpc/pull/32309 - Patch

13 Jun 2023, 16:15

Type Values Removed Values Added
Summary When gRPC HTTP2 stack raised a header size exceeded error, it skipped parsing the rest of the HPACK frame. This caused any HPACK table mutations to also be skipped, resulting in a desynchronization of HPACK tables between sender and receiver. If leveraged, say, between a proxy and a backend, this could lead to requests from the proxy being interpreted as containing headers from different proxy clients - leading to an information leak that can be used for privilege escalation or data exfiltration. We recommend upgrading beyond the commit contained in  https://github.com/grpc/grpc/pull/32309 https://github.com/grpc/grpc/pull/32309 When gRPC HTTP2 stack raised a header size exceeded error, it skipped parsing the rest of the HPACK frame. This caused any HPACK table mutations to also be skipped, resulting in a desynchronization of HPACK tables between sender and receiver. If leveraged, say, between a proxy and a backend, this could lead to requests from the proxy being interpreted as containing headers from different proxy clients - leading to an information leak that can be used for privilege escalation or data exfiltration. We recommend upgrading beyond the commit contained in  https://github.com/grpc/grpc/pull/33005 https://github.com/grpc/grpc/pull/33005
References
  • (MISC) https://github.com/grpc/grpc/pull/33005 -

09 Jun 2023, 13:03

Type Values Removed Values Added
New CVE
Information

Published : 2023-06-09 11:15

Updated : 2023-12-10 15:01

NVD link : CVE-2023-32731

Mitre link : CVE-2023-32731

CVE.ORG link : CVE-2023-32731

JSON object : View

Products Affected

grpc

  • grpc
CWE
NVD-CWE-Other CWE-440

Expected Behavior Violation