CVE-2023-32731 (High) detected in grpcv1.19.0

[mend-bolt-for-github]

CVE-2023-32731 - High Severity Vulnerability

Vulnerable Library - grpcv1.19.0

The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)

Library home page: https://github.com/grpc/grpc.git

Found in base branch: master

Vulnerable Source Files (0)

Vulnerability Details

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  grpc/grpc#33005 grpc/grpc#33005

Publish Date: 2023-06-09

URL: CVE-2023-32731

CVSS 3 Score Details (7.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: None
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://nvd.nist.gov/vuln/detail/CVE-2023-32731

Release Date: 2023-06-09

Fix Resolution: grpc - 1.53.1,1.54.2, grpcio - 1.53.1,1.54.2

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