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perl-5.42.0
⭐ Starred 2013 / Net::Domain
Security Advisories (2)
CVE-2026-4176 (2026-03-29)

Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib. Compress::Raw::Zlib is included in the Perl package as a dual-life core module, and is vulnerable to CVE-2026-3381 due to a vendored version of zlib which has several vulnerabilities, including CVE-2026-27171. The bundled Compress::Raw::Zlib was updated to version 2.221 in Perl blead commit c75ae9cc164205e1b6d6dbd57bd2c65c8593fe94.

CVE-2026-8376 (2026-05-25)

Perl versions through 5.43.10 have a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds. Perl_study_chunk in regcomp_study.c checked the size of the joined substring buffer in characters rather than bytes. For a quantified fixed substring with a large minimum count, the byte length mincount * l could overflow SSize_t, producing an undersized SvGROW allocation; the subsequent copy writes past the end of the buffer. A caller that compiles an attacker-controlled regular expression on a 32-bit perl build triggers a heap buffer overflow at compile time.

NAME

Net::Domain - Attempt to evaluate the current host's internet name and domain

SYNOPSIS

use Net::Domain qw(hostname hostfqdn hostdomain domainname);

DESCRIPTION

Using various methods attempt to find the Fully Qualified Domain Name (FQDN) of the current host. From this determine the host-name and the host-domain.

Each of the functions will return undef if the FQDN cannot be determined.

Functions

hostfqdn()

Identify and return the FQDN of the current host.

domainname()

An alias for hostfqdn().

hostname()

Returns the smallest part of the FQDN which can be used to identify the host.

hostdomain()

Returns the remainder of the FQDN after the hostname has been removed.

EXPORTS

The following symbols are, or can be, exported by this module:

Default Exports

None.

Optional Exports

hostname, hostdomain, hostfqdn, domainname.

Export Tags

None.

KNOWN BUGS

See https://rt.cpan.org/Dist/Display.html?Status=Active&Queue=libnet.

AUTHOR

Graham Barr <gbarr@pobox.com>.

Adapted from Sys::Hostname by David Sundstrom <sunds@asictest.sc.ti.com>.

Steve Hay <shay@cpan.org> is now maintaining libnet as of version 1.22_02.

COPYRIGHT

Copyright (C) 1995-1998 Graham Barr. All rights reserved.

Copyright (C) 2013-2014, 2020 Steve Hay. All rights reserved.

LICENCE

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself, i.e. under the terms of either the GNU General Public License or the Artistic License, as specified in the LICENCE file.

VERSION

Version 3.15

DATE

20 March 2023

HISTORY

See the Changes file.