VULNERABILITY

Red Hat: CVE-2023-32731: gRPC: sensitive information disclosure (Multiple Advisories)

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Red Hat: CVE-2023-32731: gRPC: sensitive information disclosure (Multiple Advisories)

Severity
7
CVSS
(AV:N/AC:H/Au:N/C:C/I:N/A:C)
Published
06/09/2023
Created
02/11/2025
Added
02/10/2025
Modified
02/10/2025

Description

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

Solution(s)

  • redhat-upgrade-rhc-worker-playbook
  • redhat-upgrade-rhc-worker-playbook-debuginfo

References

  • CVE-2023-32731
  • RHSA-2024:10761

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