Net::IPAddress::Util up to 4.x on Perl IP Address String access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in Net::IPAddress::Util up to 4.x on Perl and classified as critical. The impacted element is an unknown function of the component IP Address String Handler. The manipulation leads to access control. This vulnerability is traded as CVE-2021-47156. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Net::IPAddress::Util up to 4.x on Perl and classified as critical. This issue affects an unknown part of the component IP Address String Handler. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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 is possible to read the advisory at blog.urth.org. The identification of this vulnerability is CVE-2021-47156 since 03/18/2024. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading to version 5.000 eliminates this vulnerability. The upgrade is hosted for download at metacpan.org.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Net::IPAddress::Util 5.000

Timelineinfo

03/18/2024 🔍
03/18/2024 +0 days 🔍
03/18/2024 +0 days 🔍
03/28/2025 +375 days 🔍

Sourcesinfo

Advisory: blog.urth.org
Status: Confirmed

CVE: CVE-2021-47156 (🔍)
GCVE (CVE): GCVE-0-2021-47156
GCVE (VulDB): GCVE-100-257099

Entryinfo

Created: 03/18/2024 07:54
Updated: 03/28/2025 01:57
Changes: 03/18/2024 07:54 (55), 03/28/2025 01:57 (2)
Complete: 🔍
Cache ID: 216::103

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