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Bug 1919155

Summary:	crypto-policies incorrectly "advertise" Camellia
Product:	Red Hat Enterprise Linux 8	Reporter:	Thorsten Scherf <tscherf>
Component:	crypto-policies	Assignee:	Alexander Sosedkin <asosedki>
Status:	CLOSED CURRENTRELEASE	QA Contact:	BaseOS QE Security Team <qe-baseos-security>
Severity:	unspecified	Docs Contact:	Mirek Jahoda <mjahoda>
Priority:	high
Version:	8.3	CC:	asosedki, byodlows, fdvorak, hkario, jjelen, lmanasko, mjahoda, omoris, pvrabec, rhel-docs, rrelyea
Target Milestone:	rc	Keywords:	Documentation, Triaged
Target Release:	8.0	Flags:	pm-rhel: mirror+
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Known Issue
Doc Text:	.`crypto-policies` incorrectly allow Camellia ciphers The RHEL 8 system-wide cryptographic policies should disable Camellia ciphers in all policy levels, as stated in the product documentation. However, the Kerberos protocol enables the ciphers by default. To work around the problem, apply the `NO-CAMELLIA` subpolicy: ---- # update-crypto-policies --set DEFAULT:NO-CAMELLIA ---- In the previous command, replace `DEFAULT` with the cryptographic level name if you have switched from `DEFAULT` previously. As a result, Camellia ciphers are correctly disallowed across all applications that use system-wide crypto policies only when you disable them through the workaround.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-03-08 16:20:03 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:

Description Thorsten Scherf 2021-01-22 09:44:53 UTC

Document URL: 
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/security_hardening/using-the-system-wide-cryptographic-policies_security-hardening

Section Number and Name: 
3.1. System-wide cryptographic policies

Describe the issue: 
In section 'Cipher suites and protocols disabled in all policy levels' we list list the 'Camellia' cipher which would imply that the cipher is not shipped with any of the policies.

But looking at the policies, we can see the cipher is used in all policies except FIPS policy:

 # grep -ri camellia /usr/share/crypto-policies/policies/
/usr/share/crypto-policies/policies/DEFAULT.pol:# non-TLS Ciphers: as TLS Ciphers with added Camellia
/usr/share/crypto-policies/policies/DEFAULT.pol:cipher = AES-256-GCM AES-256-CCM CHACHA20-POLY1305 CAMELLIA-256-GCM \
/usr/share/crypto-policies/policies/DEFAULT.pol:    AES-256-CTR AES-256-CBC CAMELLIA-256-CBC AES-128-GCM AES-128-CCM \
/usr/share/crypto-policies/policies/DEFAULT.pol:    CAMELLIA-128-GCM AES-128-CTR AES-128-CBC CAMELLIA-128-CBC
/usr/share/crypto-policies/policies/FUTURE.pol:# non-TLS Ciphers: same as TLS Ciphers with added non AE ciphers and Camellia
/usr/share/crypto-policies/policies/FUTURE.pol:cipher = AES-256-GCM AES-256-CCM CHACHA20-POLY1305 CAMELLIA-256-GCM \
/usr/share/crypto-policies/policies/FUTURE.pol:    AES-256-CTR AES-256-CBC CAMELLIA-256-CBC
/usr/share/crypto-policies/policies/LEGACY.pol:# non-TLS Ciphers: as TLS Ciphers with added Camellia
/usr/share/crypto-policies/policies/LEGACY.pol:cipher = AES-256-GCM AES-256-CCM CHACHA20-POLY1305 CAMELLIA-256-GCM \
/usr/share/crypto-policies/policies/LEGACY.pol:    AES-256-CTR AES-256-CBC CAMELLIA-256-CBC AES-128-GCM AES-128-CCM \
/usr/share/crypto-policies/policies/LEGACY.pol:    CAMELLIA-128-GCM AES-128-CTR AES-128-CBC CAMELLIA-128-CBC \
/usr/share/crypto-policies/policies/modules/NO-CAMELLIA.pmod:# This is example policy dropping the Camellia support altogether
/usr/share/crypto-policies/policies/modules/NO-CAMELLIA.pmod:tls_cipher = -CAMELLIA-256-GCM -CAMELLIA-256-CBC -CAMELLIA-128-GCM \
/usr/share/crypto-policies/policies/modules/NO-CAMELLIA.pmod:    -CAMELLIA-128-CBC
/usr/share/crypto-policies/policies/modules/NO-CAMELLIA.pmod:cipher = -CAMELLIA-256-GCM -CAMELLIA-256-CBC -CAMELLIA-128-GCM \
/usr/share/crypto-policies/policies/modules/NO-CAMELLIA.pmod:    -CAMELLIA-128-CBC

As we can see, there is even a 'NO-CAMELLIA' policy to explicitly disable the cipher.

Suggestions for improvement: 
Remove 'Camellia' from the section 'Cipher suites and protocols disabled in all policy levels'.

Additional information:

Comment 7 Bob Relyea 2021-01-26 19:08:36 UTC

We should removed Camella from NORMAL and FUTURE at least. NSS application could still turn Camella on, but it's off be default already, so it probably shouldn't be on by policy anymore. We should also talk about seed;).