Bug 2278071 (CVE-2024-29038)

Summary:	CVE-2024-29038 tpm2-tools: arbitrary quote data may go undetected by tpm2_checkquote
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 the tpm2-tools package. This issue occurs due to a missing check whether the magic number in attest is equal to TPM2_GENERATED_VALUE, which can allow an attacker to generate arbitrary quote data that may not be detected by tpm2_checkquote.	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:	2292187
Bug Blocks:	2278069

Description Robb Gatica 2024-05-01 00:24:55 UTC

It was not checked whether the magic number in the attest is equal to TPM2_GENERATED_VALUE. So an attacker could generate arbitrary quote data which was not detected by tpm2 checkquote.

References:
https://github.com/tpm2-software/tpm2-tools/commit/66d922d6547b7b4fe4f274fb2ec10b376e0e259c

Comment 2 Dhananjay Arunesh 2024-06-13 11:22:09 UTC

Created tpm2-tools tracking bugs for this issue:

Affects: fedora-all [bug 2292187]

Comment 5 errata-xmlrpc 2024-11-12 10:57:55 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