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Package "libnet-cidr-perl"

Name: libnet-cidr-perl

Description:

module to manipulate IPv4/IPv6 netblocks in CIDR notation
Latest version: 0.21-1ubuntu0.2
Release: jammy (22.04)
Level: security
Repository: main
Homepage: https://metacpan.org/release/Net-CIDR

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base main 0.21-1
updates main 0.21-1ubuntu0.2

Changelog

Version: 0.21-1ubuntu0.2 2026-03-18 23:07:50 UTC

  libnet-cidr-perl (0.21-1ubuntu0.2) jammy-security; urgency=medium

  * SECURITY UPDATE: Access Control Bypass in addr2cidr.
    - debian/patches/CVE-2021-4456.patch: Ensure leading zeros are
      stripped from IP address in lib/Net/CIDR.pm
    - debian/patches/CVE-2021-4456-post1.patch: Fix warning by properly
      escaping argument in sed expression in lib/Net/CIDR.pm
    - CVE-2021-4456

 -- Kyle Kernick <email address hidden> Mon, 16 Mar 2026 14:52:41 -0600
CVE-2021-4456 Net::CIDR versions before 0.24 for Perl mishandle leading zeros in IP CIDR addresses, which may have unspecified impact. The functions `addr2cidr` a


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