7.5 - CVE-2023-32690

Executive Summary

Informations
Name	CVE-2023-32690	First vendor Publication	2023-06-01
Vendor	Cve	Last vendor Modification	2023-06-09

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score	7.5
Base Score	7.5	Environmental Score	7.5
impact SubScore	3.6	Temporal Score	7.5
Exploitabality Sub Score	3.9

Attack Vector	Network	Attack Complexity	Low
Privileges Required	None	User Interaction	None
Scope	Unchanged	Confidentiality Impact	None
Integrity Impact	None	Availability Impact	High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score	N/A	Attack Range	N/A
Cvss Impact Score	N/A	Attack Complexity	N/A
Cvss Expoit Score	N/A	Authentication	N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-32690

CPE : Common Platform Enumeration

Type	Description	Count
Application	Dmtf Libspdm cpe:2.3:a:dmtf:libspdm::::::::	1

Sources (Detail)

Source	Url
MISC	https://github.com/DMTF/libspdm/issues/2068 https://github.com/DMTF/libspdm/pull/2069 https://github.com/DMTF/libspdm/security/advisories/GHSA-56h8-4gv5-jf2c