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CVE-2021-29424

HIGHCVSS 7.5/10EPSS 2.00%

Last modified

CVE-2021-29424 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The Net::Netmask module before 2.0000 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.. EPSS estimates a 2.00% chance of exploitation in the next 30 days.

Description

The Net::Netmask module before 2.0000 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.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
2.00%

78.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
Net\\< 2.0000Net\
FedoraprojectFedora32—
FedoraprojectFedora33—
FedoraprojectFedora34—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-29424?
The Net::Netmask module before 2.0000 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.
How severe is CVE-2021-29424?
CVE-2021-29424 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.00% probability of exploitation in the next 30 days.
How do I fix CVE-2021-29424?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-29424?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST