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.
Metrics
Affected Vendors & Products
References
History
No history.
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
Vulnrichment
No data.
NVD
Status : Analyzed
Published: 2023-06-01T17:15:09.947
Modified: 2023-06-09T17:52:40.797
Link: CVE-2023-32690
Redhat
No data.