CVE-2021-47155 - Vulnerability Details - OpenCVE

Description

The Net::IPV4Addr module 0.10 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.

Published: 2024-03-18

Score: 9.1 Critical

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

No data.

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00054.

Exploitation poc

Automatable yes

Technical Impact total

References

Link	Providers
https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/#net-ipv4addrhttpsmetacpanorgreleasenet-ipv4addr
https://metacpan.org/release/Net-IPv4Addr

History

Thu, 26 Feb 2026 01:15:00 +0000

Type	Values Removed	Values Added
First Time appeared		Perl Perl perl
CPEs		cpe:2.3:a:perl:perl:-:::::::*
Vendors & Products		Perl Perl perl
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Thu, 29 Aug 2024 21:00:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-284
Metrics		cvssV3_1 `{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}`

Subscriptions

Perl Perl

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2024-03-18T00:00:00.000Z

Updated: 2024-08-29T16:48:45.929Z

Reserved: 2024-03-18T00:00:00.000Z

Link: CVE-2021-47155

Vulnrichment

Updated: 2024-08-04T05:24:39.943Z

NVD

Status : Deferred

Published: 2024-03-18T05:15:06.203

Modified: 2026-04-15T00:35:42.020

Link: CVE-2021-47155

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-284

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