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{"cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "El m\u00f3dulo Net::CIDR::Lite anterior a 0.22 para Perl no considera adecuadamente los caracteres cero extra\u00f1os al comienzo de una cadena de direcci\u00f3n IP, lo que (en algunas situaciones) permite a los atacantes eludir el control de acceso basado en direcciones IP."}], "id": "CVE-2021-47154", "lastModified": "2026-04-15T00:35:42.020", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.4, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2024-03-18T05:15:06.140", "references": [{"source": "cve@mitre.org", "url": "https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/"}, {"source": "cve@mitre.org", "url": "https://github.com/stigtsp/Net-CIDR-Lite/commit/23b6ff0590dc279521863a502e890ef19a5a76fc"}, {"source": "cve@mitre.org", "url": "https://lists.debian.org/debian-lts-announce/2024/03/msg00023.html"}, {"source": "cve@mitre.org", "url": "https://metacpan.org/dist/Net-CIDR-Lite/changes"}, {"source": "cve@mitre.org", "url": "https://metacpan.org/pod/Net::CIDR::Lite"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/stigtsp/Net-CIDR-Lite/commit/23b6ff0590dc279521863a502e890ef19a5a76fc"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2024/03/msg00023.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://metacpan.org/dist/Net-CIDR-Lite/changes"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://metacpan.org/pod/Net::CIDR::Lite"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "Perl-Net-CIDR-Lite: improper handling of extraneous zero characters in an IP address string", "id": "2270058", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2270058"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L", "status": "draft"}, "cwe": "CWE-20", "details": ["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.", "A vulnerability was found in the Perl module Net::CIDR::Lite, where extraneous zero characters at the start of an IP address string are not adequately handled. This flaw may enable attackers to circumvent IP address-based access controls in certain scenarios."], "name": "CVE-2021-47154", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "perl-Net-CIDR-Lite", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-03-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47154\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47154\nhttps://blog.urth.org/2021/03/29/security-issues-in-perl-ip-address-distros/\nhttps://github.com/stigtsp/Net-CIDR-Lite/commit/23b6ff0590dc279521863a502e890ef19a5a76fc\nhttps://metacpan.org/dist/Net-CIDR-Lite/changes\nhttps://metacpan.org/pod/Net::CIDR::Lite"], "threat_severity": "Moderate"}

{}