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Bug 1959016

Summary:	SHA-1 support in legacy mode at SECLEVEL 1
Product:	Red Hat Enterprise Linux 9	Reporter:	Sahana Prasad <sahana>
Component:	openssl	Assignee:	Sahana Prasad <sahana>
Status:	CLOSED WONTFIX	QA Contact:	Alicja Kario <hkario>
Severity:	unspecified	Docs Contact:
Priority:	medium
Version:	CentOS Stream	CC:	asosedki, bstinson, hkario, jwboyer, omoris, szidek
Target Milestone:	beta	Keywords:	Triaged
Target Release:	---	Flags:	pm-rhel: mirror+
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Enhancement
Doc Text:	Feature: SHA-1 is only supported in LEGACY mode in RHEL-9 Reason: SHA-1 support is still needed for backwards compatibility with RHEL-8 to verify signatures. This will also help users that haven't migrated from using SHA-1 yet. Internally for OpenSSL in RHEL-9, SHA-1 support will be at SECLEVEL 1. SECLEVEL1 will inherit all it's algorithms and key sizes from SECLEVEL2, except that it would also support SHA-1 Upstream definitions of SELEVELs can be found here: https://www.openssl.org/docs/manmaster/man3/SSL_CTX_get_security_level.html Result: Successful verification of SHA-1 certs and signatures in LEGACY mode.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-12-13 11:29:04 UTC	Type:	Bug
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:
Bug Blocks:	1960700

Description Sahana Prasad 2021-05-10 15:05:59 UTC

OpenSSL upstream has deprecated support for SHA-1 by default. It is available only if SECLEVEL is set 0.
In RHEL-9 we want to support SHA-1 in LEGACY mode @SECLEVEL1.
A downstream patch is required to introduce this.
Crypto policies is set to @SECLEVEL 2 for LEGACY mode, it should be changed to @SECLEVEL1 to prevent a conflict with DEFAULT mode which is also set to @SECLEVEL2.

Comment 7 Alicja Kario 2021-08-10 12:02:01 UTC

*** Bug 1954616 has been marked as a duplicate of this bug. ***