CVE-2021-47156

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

18/03/2024

Last modified:

27/03/2025

Description

The Net::IPAddress::Util module before 5.000 for Perl does not properly consider extraneous zero characters in an IP address string, which (in some situations) allows attackers to bypass access control that is based on IP addresses.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): Low
Availability (A): None

Base Score 3.x

6.50

Severity 3.x

MEDIUM

References to Advisories, Solutions, and Tools

https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/
https://metacpan.org/release/Net-IPAddress-Util
https://metacpan.org/release/PWBENNETT/Net-IPAddress-Util-5.000/changes
https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/
https://metacpan.org/release/Net-IPAddress-Util
https://metacpan.org/release/PWBENNETT/Net-IPAddress-Util-5.000/changes