{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2011-02-04T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "The key_certify function in usr.bin/ssh/key.c in OpenSSH 5.6 and 5.7, when generating legacy certificates using the -t command-line option in ssh-keygen, does not initialize the nonce field, which might allow remote attackers to obtain sensitive stack memory contents or make it easier to conduct hash collision attacks."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2017-08-16T14:57:01.000Z", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"name": "[oss-security] 20110204 Re: [vendor-sec] OpenSSH security advisory: legacy certificate signing in 5.6/5.7", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2011/02/04/2"}, {"name": "1025028", "tags": ["vdb-entry", "x_refsource_SECTRACK"], "url": "http://www.securitytracker.com/id?1025028"}, {"name": "46155", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/46155"}, {"tags": ["x_refsource_CONFIRM"], "url": "http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673"}, {"name": "ADV-2011-0284", "tags": ["vdb-entry", "x_refsource_VUPEN"], "url": "http://www.vupen.com/english/advisories/2011/0284"}, {"name": "43181", "tags": ["third-party-advisory", "x_refsource_SECUNIA"], "url": "http://secunia.com/advisories/43181"}, {"name": "HPSBMA02658", "tags": ["vendor-advisory", "x_refsource_HP"], "url": "http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777"}, {"name": "SSRT100413", "tags": ["vendor-advisory", "x_refsource_HP"], "url": "http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777"}, {"name": "44269", "tags": ["third-party-advisory", "x_refsource_SECUNIA"], "url": "http://secunia.com/advisories/44269"}, {"tags": ["x_refsource_CONFIRM"], "url": "http://www.openssh.com/txt/legacy-cert.adv"}, {"name": "openssh-certificate-info-disclosure(65163)", "tags": ["vdb-entry", "x_refsource_XF"], "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/65163"}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-06T21:58:25.891Z"}, "title": "CVE Program Container", "references": [{"name": "[oss-security] 20110204 Re: [vendor-sec] OpenSSH security advisory: legacy certificate signing in 5.6/5.7", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2011/02/04/2"}, {"name": "1025028", "tags": ["vdb-entry", "x_refsource_SECTRACK", "x_transferred"], "url": "http://www.securitytracker.com/id?1025028"}, {"name": "46155", "tags": ["vdb-entry", "x_refsource_BID", "x_transferred"], "url": "http://www.securityfocus.com/bid/46155"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673"}, {"name": "ADV-2011-0284", "tags": ["vdb-entry", "x_refsource_VUPEN", "x_transferred"], "url": "http://www.vupen.com/english/advisories/2011/0284"}, {"name": "43181", "tags": ["third-party-advisory", "x_refsource_SECUNIA", "x_transferred"], "url": "http://secunia.com/advisories/43181"}, {"name": "HPSBMA02658", "tags": ["vendor-advisory", "x_refsource_HP", "x_transferred"], "url": "http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777"}, {"name": "SSRT100413", "tags": ["vendor-advisory", "x_refsource_HP", "x_transferred"], "url": "http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777"}, {"name": "44269", "tags": ["third-party-advisory", "x_refsource_SECUNIA", "x_transferred"], "url": "http://secunia.com/advisories/44269"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "http://www.openssh.com/txt/legacy-cert.adv"}, {"name": "openssh-certificate-info-disclosure(65163)", "tags": ["vdb-entry", "x_refsource_XF", "x_transferred"], "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/65163"}]}]}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2011-0539", "datePublished": "2011-02-10T17:00:00.000Z", "dateReserved": "2011-01-20T00:00:00.000Z", "dateUpdated": "2024-08-06T21:58:25.891Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:openbsd:openssh:5.6:*:*:*:*:*:*:*", "matchCriteriaId": "0C5D4A9B-1194-4D63-AAC2-8701C890BB0D", "vulnerable": true}, {"criteria": "cpe:2.3:a:openbsd:openssh:5.7:*:*:*:*:*:*:*", "matchCriteriaId": "F75DB5AE-E99D-4827-B290-823E015AEE34", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The key_certify function in usr.bin/ssh/key.c in OpenSSH 5.6 and 5.7, when generating legacy certificates using the -t command-line option in ssh-keygen, does not initialize the nonce field, which might allow remote attackers to obtain sensitive stack memory contents or make it easier to conduct hash collision attacks."}, {"lang": "es", "value": "La funci\u00f3n key_certify en usr.bin/ssh/key.c en OpenSSH v5.6 y v5.7 al generar los certificados de herencia con la opci\u00f3n de l\u00ednea de comandos -t en ssh-keygen, no se inicializa el campo nonce, que podr\u00eda permitir a atacantes remotos obtener contenido sensible de la pila de memoria o que sea m\u00e1s f\u00e1cil de llevar a cabo ataques de colisi\u00f3n hash."}], "id": "CVE-2011-0539", "lastModified": "2026-04-29T01:13:23.040", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2011-02-10T18:00:57.660", "references": [{"source": "secalert@redhat.com", "url": "http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777"}, {"source": "secalert@redhat.com", "url": "http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/43181"}, {"source": "secalert@redhat.com", "url": "http://secunia.com/advisories/44269"}, {"source": "secalert@redhat.com", "tags": ["Patch", "Vendor Advisory"], "url": "http://www.openssh.com/txt/legacy-cert.adv"}, {"source": "secalert@redhat.com", "url": "http://www.openwall.com/lists/oss-security/2011/02/04/2"}, {"source": "secalert@redhat.com", "url": "http://www.securityfocus.com/bid/46155"}, {"source": "secalert@redhat.com", "url": "http://www.securitytracker.com/id?1025028"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "http://www.vupen.com/english/advisories/2011/0284"}, {"source": "secalert@redhat.com", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/65163"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02794777"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/43181"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://secunia.com/advisories/44269"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "http://www.openssh.com/txt/legacy-cert.adv"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2011/02/04/2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/46155"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securitytracker.com/id?1025028"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://www.vupen.com/english/advisories/2011/0284"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/65163"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-264"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "OpenSSH: legacy certificate generation information leak", "id": "675254", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=675254"}, "csaw": false, "details": ["The key_certify function in usr.bin/ssh/key.c in OpenSSH 5.6 and 5.7, when generating legacy certificates using the -t command-line option in ssh-keygen, does not initialize the nonce field, which might allow remote attackers to obtain sensitive stack memory contents or make it easier to conduct hash collision attacks."], "name": "CVE-2011-0539", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Not affected", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "openssh", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2011-02-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2011-0539\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-0539"], "statement": "Not vulnerable. This issue did not affect the versions of openssh as shipped with Red Hat Enterprise Linux 4, 5, or 6.", "threat_severity": "Low"}

{}