libspdm is a sample implementation that follows the DMTF SPDM specifications. Prior to versions 2.3.3 and 3.0, following a successful CAPABILITIES response, a libspdm Requester stores the Responder's CTExponent into its context without validation. If the Requester sends a request message that requires a cryptography operation by the Responder, such as CHALLENGE, libspdm will calculate the timeout value using the Responder's unvalidated CTExponent. A patch is available in version 2.3.3. A workaround is also available. After completion of VCA, the Requester can check the value of the Responder's CTExponent. If it greater than or equal to 64, then the Requester can stop communication with the Responder.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2023-06-01T16:15:21.052Z

Updated: 2024-08-02T15:25:36.555Z

Reserved: 2023-05-11T16:33:45.732Z

Link: CVE-2023-32690

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2023-06-01T17:15:09.947

Modified: 2023-06-09T17:52:40.797

Link: CVE-2023-32690

cve-icon Redhat

No data.