CVE-2013-5018

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:strongswan:strongswan:4.1.11:*:*:*:*:*:*:*", "matchCriteriaId": "7D636603-65D5-45DB-AF7F-DD01B3932914", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:strongswan:strongswan:5.0.0:*:*:*:*:*:*:*", "matchCriteriaId": "944942A8-79D0-40AC-BE98-D552DCF2BB07", "vulnerable": true}, {"criteria": "cpe:2.3:a:strongswan:strongswan:5.0.1:*:*:*:*:*:*:*", "matchCriteriaId": "905ABDB8-6CC3-4F7F-8853-8EDDA5E5AB8F", "vulnerable": true}, {"criteria": "cpe:2.3:a:strongswan:strongswan:5.0.2:*:*:*:*:*:*:*", "matchCriteriaId": "14E2A13E-427F-45A7-B898-64C10CD8962B", "vulnerable": true}, {"criteria": "cpe:2.3:a:strongswan:strongswan:5.0.3:*:*:*:*:*:*:*", "matchCriteriaId": "40ED1E2A-B769-4B1D-83D1-300789E03C97", "vulnerable": true}, {"criteria": "cpe:2.3:a:strongswan:strongswan:5.0.4:*:*:*:*:*:*:*", "matchCriteriaId": "339D620A-CD60-4078-81A1-5703B1CFBB3D", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*", "matchCriteriaId": "DE554781-1EB9-446E-911F-6C11970C47F4", "vulnerable": true}, {"criteria": "cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:*", "matchCriteriaId": "D806A17E-B8F9-466D-807D-3F1E77603DC8", "vulnerable": true}, {"criteria": "cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*", "matchCriteriaId": "DFBF430B-0832-44B0-AA0E-BA9E467F7668", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return value of the asn1_length function, which allows remote attackers to cause a denial of service (segmentation fault) via a (1) XAuth username, (2) EAP identity, or (3) PEM encoded file that starts with a 0x04, 0x30, or 0x31 character followed by an ASN.1 length value that triggers an integer overflow."}, {"lang": "es", "value": "La funci\u00f3n is_asn1 en strongSwan v4.1.11 hasta v5.0.4 no valida correctamente el valor de retorno de la funci\u00f3n asn1_length, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (corrupci\u00f3n de memoria) a trav\u00e9s de (1) nombre de usuario XAuth, (2) identidad EAP, o (3) la codificaci\u00f3n PEM de un fichero que comienza con los caracteres \"0x04, 0x30, o 0x31\" seguidos por un valor de tama\u00f1o ASN.1 que dispara un desbordamiento de enteros."}], "id": "CVE-2013-5018", "lastModified": "2026-06-16T23:58:15.530", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2013-08-28T23:55:10.650", "references": [{"source": "cve@mitre.org", "url": "http://lists.opensuse.org/opensuse-updates/2013-08/msg00021.html"}, {"source": "cve@mitre.org", "url": "http://lists.opensuse.org/opensuse-updates/2013-08/msg00022.html"}, {"source": "cve@mitre.org", "url": "http://lists.opensuse.org/opensuse-updates/2013-08/msg00050.html"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/54315"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/54524"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": 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{"bugzilla": {"description": "strongswan: denial of service flaw in 5.0.3/5.0.4", "id": "991215", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=991215"}, "csaw": false, "cvss": {"cvss_base_score": "4.3", "cvss_scoring_vector": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "status": "draft"}, "details": ["The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return value of the asn1_length function, which allows remote attackers to cause a denial of service (segmentation fault) via a (1) XAuth username, (2) EAP identity, or (3) PEM encoded file that starts with a 0x04, 0x30, or 0x31 character followed by an ASN.1 length value that triggers an integer overflow."], "name": "CVE-2013-5018", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "openswan", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "openswan", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "openswan", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2013-08-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2013-5018\nhttps://nvd.nist.gov/vuln/detail/CVE-2013-5018\nhttp://strongswan.org/blog/2013/08/01/strongswan-denial-of-service-vulnerability-(cve-2013-5018).html"], "statement": "Not vulnerable. This issue did not affect the versions of openswan as shipped with Red Hat Enterprise Linux 5 or 6 as they did not include the problematic newline checks when validating ASN.1 length.", "threat_severity": "Moderate"}

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