vulnerability
Ubuntu: (CVE-2021-29424): libnet-netmask-perl vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:P/A:N) | Apr 6, 2021 | Jun 26, 2025 | Mar 27, 2026 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
Apr 6, 2021
Added
Jun 26, 2025
Modified
Mar 27, 2026
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.
Solution
no-fix-ubuntu-package
References
- CVE-2021-29424
- https://attackerkb.com/topics/CVE-2021-29424
- CWE-704
- EUVD-EUVD-2021-16056
- https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-16056
- https://metacpan.org/changes/distribution/Net-Netmask#L11-22
- https://www.cve.org/CVERecord?id=CVE-2021-29424
Rapid7 Labs
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