Bug 2263402 (CVE-2023-20587)

Summary:	CVE-2023-20587 hw: amd: failure to sanitize input in SMM
Product:	[Other] Security Response	Reporter:	Nick Tait <ntait>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	allarkin, dfreiber, drow, jburrell, security-response-team, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in AMD hardware due to improper access control in System Management Mode (SMM). This issue could allow a local unauthenticated attacker to execute arbitrary code.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2264237
Bug Blocks:	2263273

Description Nick Tait 2024-02-08 17:47:13 UTC

A flaw found for the AMD CPU. Improper Access Control in System Management Mode (SMM) may allow an attacker access to the SPI flash potentially leading to arbitrary code execution.

Reference:
https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7009.html

Comment 5 Nick Tait 2024-02-14 17:31:27 UTC

Created linux-firmware tracking bugs for this issue:

Affects: fedora-all [bug 2264237]

Comment 6 Peter Robinson 2024-02-25 14:06:38 UTC

This is a UEFI firmware update from the device vendor, not an update in linux-firmware, these should be closed out as such.