Bug 2278075 (CVE-2024-29039)

Summary:	CVE-2024-29039 tpm2-tools: pcr selection value is not compared with the attest
Product:	[Other] Security Response	Reporter:	Robb Gatica <rgatica>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	tpm2-tools 5.7	Doc Type:	---
Doc Text:	A flaw was found in tpm2-tools. The PCR selection, which is passed with the --pcr parameter, is not compared with the attest, making it possible for an attacker to fake a valid attestation.	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:	2292188
Bug Blocks:	2278069

Description Robb Gatica 2024-05-01 00:48:45 UTC

The pcr selection which is passed with the --pcr parameter it not compared with the attest. So it's possible to fake a valid attestation.

References:
https://github.com/tpm2-software/tpm2-tools/commit/98599df9392a346216c5a059b8d35271286100bb

Comment 2 Dhananjay Arunesh 2024-06-13 11:23:01 UTC

Created tpm2-tools tracking bugs for this issue:

Affects: fedora-all [bug 2292188]

Comment 5 errata-xmlrpc 2024-11-12 10:57:58 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:9424 https://access.redhat.com/errata/RHSA-2024:9424