VulnerabilityDeferred
CVE-2021-47154
The Net::CIDR::Lite module before 0.22 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.
MEDIUM 6.3EPSS 0.49%
Does this matter?
Lower severity and a low EPSS score (0.49%). Track it; it rarely justifies an emergency change on its own.
Description
The Net::CIDR::Lite module before 0.22 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.
- CVSS 3.1
- 6.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
- EPSS
- 0.49% probability · 41th percentile
- CISA KEV
- Not listed
- Source
- cve@mitre.org
References
- https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/
- https://github.com/stigtsp/Net-CIDR-Lite/commit/23b6ff0590dc279521863a502e890ef19a5a76fc
- https://lists.debian.org/debian-lts-announce/2024/03/msg00023.html
- https://metacpan.org/dist/Net-CIDR-Lite/changes
- https://metacpan.org/pod/Net::CIDR::Lite
- https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/
- https://github.com/stigtsp/Net-CIDR-Lite/commit/23b6ff0590dc279521863a502e890ef19a5a76fc
- https://lists.debian.org/debian-lts-announce/2024/03/msg00023.html
- https://metacpan.org/dist/Net-CIDR-Lite/changes
- https://metacpan.org/pod/Net::CIDR::Lite
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.