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Bug 2077906

Summary: [bind: FIPS mode] Resolution of many domains signed by just 1024 bit key would start failing
Product: Red Hat Enterprise Linux 9 Reporter: Petr Menšík <pemensik>
Component: bindAssignee: Petr Menšík <pemensik>
Status: CLOSED MIGRATED QA Contact: rhel-cs-infra-services-qe <rhel-cs-infra-services-qe>
Severity: high Docs Contact:
Priority: unspecified    
Version: 9.0Keywords: MigratedToJIRA, Regression, Triaged
Target Milestone: rcFlags: pm-rhel: mirror+
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2023-09-21 17:55:27 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: 2077884    
Bug Blocks:    

Description Petr Menšík 2022-04-22 14:43:42 UTC 
Description of problem:
Many DNSSEC ZSK keys used on public zones use short keys. Those short keys verifications works on RHEL 9.0 at the moment, but is going to be fixed by bug #2077884.

Version-Release number of selected component (if applicable):
bind-9.16.23-1.el9.x86_64

How reproducible:
would be reliable


Steps to Reproduce:
1. kdig +multi -t dnskey 100.in-addr.arpa | grep '1[0-9]\{3\}b'
2. fips-mode-setup --enable && reboot
3. systemctl restart named

Actual results:
; <<>> DiG 9.16.23-RH <<>> @localhost 100.in-addr.arpa
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 51523
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0


Expected results:
dig @localhost 100.in-addr.arpa

; <<>> DiG 9.16.23-RH <<>> @localhost 100.in-addr.arpa
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 51523
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: ccbd17067595b02d010000006262bec84c89c72cc8cf6a3d (good)
;; QUESTION SECTION:
;100.in-addr.arpa.		IN	A

;; AUTHORITY SECTION:
100.in-addr.arpa.	10765	IN	SOA	z.arin.net. dns-ops.arin.net. 2017033603 1800 900 691200 10800

;; Query time: 1 msec
;; SERVER: ::1#53(::1)
;; WHEN: Fri Apr 22 10:42:16 EDT 2022
;; MSG SIZE  rcvd: 127


Additional info:
Comment 1 Petr Menšík 2022-04-25 09:47:30 UTC 
Sent notification and question to IETF dnsop group [1]. Also to bind users [2].

1. https://mailarchive.ietf.org/arch/msg/dnsop/Vk0tdPPmwgRJA6Hy-3ykIHB_-l8/
2. https://lists.isc.org/pipermail/bind-users/2022-April/105981.html
Comment 2 Petr Menšík 2022-04-29 20:45:31 UTC 
First proposal sent to upstream, but it does not work at all. It breaks resolution and security flags, but result is not converted to insecure this way. Going to be much harder it seems.

Anywhere in code when availability of algorithm is tested, the used key is not yet loaded. Converting bitsize of key to have idea is not so easy.
Comment 3 RHEL Program Management 2023-09-21 17:51:35 UTC 
Issue migration from Bugzilla to Jira is in process at this time. This will be the last message in Jira copied from the Bugzilla bug.
Comment 4 RHEL Program Management 2023-09-21 17:55:27 UTC 
This BZ has been automatically migrated to the issues.redhat.com Red Hat Issue Tracker. All future work related to this report will be managed there.

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