Description
The Net::Netmask module before 2.0000 for Perl does not properly consider extraneous zero characters at the beginning of an IP address string, which (in some situations) allows attackers to bypass access control that is based on IP addresses.
References (6)
Core 6
Core References
Exploit, Third Party Advisory x_refsource_misc
https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/
Release Notes, Third Party Advisory x_refsource_misc
https://metacpan.org/changes/distribution/Net-Netmask#L11-22
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CBJVLXJSWN6DKSF5ADUEERI6M23R3GGP/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JF4CYIZELC3NISB3RMV4OCI4GYBC557B/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y7JIPQAY5OZ5D3DA7INQILU7SGHTHMWB/
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210604-0007/
Scores
CVSS v3
7.5
EPSS
0.0200
EPSS Percentile
78.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Details
CWE
CWE-704
Status
published
Products (4)
fedoraproject/fedora
32
fedoraproject/fedora
33
fedoraproject/fedora
34
net\/\
< 2.0000
Published
Apr 06, 2021
Tracked Since
Feb 18, 2026