Bug 2546315

Summary:	CVE-2026-19954 perl-Net-Whois-Raw: perl-net-whois-raw: incorrect WHOIS domain lookup via improper Unicode normalization [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Vladimir Vasilev <vvasilev>
Component:	perl-Net-Whois-Raw	Assignee:	Emmanuel Seyman <emmanuel>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	low	Docs Contact:
Priority:	low
Version:	rawhide	CC:	emmanuel, perl-devel
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["215826bf-920e-41b9-97d2-a97e1bffb4a0"]}
Fixed In Version:	perl-Net-Whois-Raw-2.99.044-1.fc44 perl-Net-Whois-Raw-2.99.044-1.fc43 perl-Net-Whois-Raw-2.99.044-1.fc45	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-10-21 01:04:58 UTC	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:
Bug Blocks:	2545817

Description Vladimir Vasilev 2026-10-06 08:02:27 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Net::Whois::Raw versions before 2.99044 for Perl ship a pwhois command-line tool that queries WHOIS for the wrong domain for unicode domain names.

pwhois encodes each non-ASCII label directly using Net::IDN::Punycode and prepends xn--. Apart from lowercasing ASCII and Cyrillic letters, it skips the IDNA mapping and normalization steps, so a label with other uppercase letters, or not in NFC, encodes to a different A-label than its IDNA form. For example, a label of U+00C9 followed by "cole" encodes to "xn--cole-pka" rather than "xn--cole-9oa".

The Net::Whois::Raw library modules are not affected.

Comment 1 Fedora Update System 2026-10-11 12:46:48 UTC

FEDORA-2026-c330a15c68 (perl-Net-Whois-Raw-2.99.044-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-c330a15c68

Comment 2 Fedora Update System 2026-10-11 12:46:50 UTC

FEDORA-2026-535e7d2281 (perl-Net-Whois-Raw-2.99.044-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-535e7d2281

Comment 3 Fedora Update System 2026-10-13 01:57:22 UTC

FEDORA-2026-535e7d2281 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-535e7d2281`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-535e7d2281

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 4 Fedora Update System 2026-10-13 02:31:52 UTC

FEDORA-2026-78d9d79627 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-78d9d79627`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-78d9d79627

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-10-13 03:01:44 UTC

FEDORA-2026-c330a15c68 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-c330a15c68`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-c330a15c68

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 6 Fedora Update System 2026-10-21 01:04:58 UTC

FEDORA-2026-78d9d79627 (perl-Net-Whois-Raw-2.99.044-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 7 Fedora Update System 2026-10-21 01:34:42 UTC

FEDORA-2026-c330a15c68 (perl-Net-Whois-Raw-2.99.044-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 8 Fedora Update System 2026-10-31 18:37:07 UTC

FEDORA-2026-535e7d2281 (perl-Net-Whois-Raw-2.99.044-1.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.