CVE-2021-47156 (CVSS 6.5)

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.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Weakness Type (CWE)

CWE-1287 CWE-1287

References

Other References

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

Frequently Asked Questions

What is CVE-2021-47156? +

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. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2021-47156? +

CVE-2021-47156 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2021-47156? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2021-47156