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CVE-2021-47154
The Net::CIDR::Lite module before 0.22 for Perl does not properly consider extraneous zero characters at the beginning of an IP address…
Medium6.3EPSS 0.49%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The Net::CIDR::Lite module before 0.22 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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium6.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L |
| NVDNVD · Deferred | 3.1 | Medium6.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L |
- EPSS (exploitation in 30 days)
- 0.49% · top 58% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.3.
Weakness
- n/a
- CWE-noinfo Not enough information
Affected products
n/a
- affected n/a
References (5)
- https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/ (opens in a new tab)x_transferred
- https://metacpan.org/pod/Net::CIDR::Lite (opens in a new tab)x_transferred
- https://github.com/stigtsp/Net-CIDR-Lite/commit/23b6ff0590dc279521863a502e890ef19a5a76fc (opens in a new tab)x_transferred
- https://metacpan.org/dist/Net-CIDR-Lite/changes (opens in a new tab)x_transferred
- [debian-lts-announce] 20240323 [SECURITY] [DLA 3770-1] libnet-cidr-lite-perl security update (opens in a new tab)mailing-listx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-47154)Record last updated .