CVE-2016-6305

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:openssl:openssl:1.1.0:*:*:*:*:*:*:*", "matchCriteriaId": "73104834-5810-48DD-9B97-549D223853F1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The ssl3_read_bytes function in record/rec_layer_s3.c in OpenSSL 1.1.0 before 1.1.0a allows remote attackers to cause a denial of service (infinite loop) by triggering a zero-length record in an SSL_peek call."}, {"lang": "es", "value": "La funci\u00f3n ssl3_read_bytes en record/rec_layer_s3.c en OpenSSL 1.1.0 en versiones anteriores a 1.1.0a permite a atacantes remotos provocar una denegaci\u00f3n de servicio (bucle infinito) desencadenando un registro de longitud cero en una llamada SSL_peek."}], "id": "CVE-2016-6305", "lastModified": "2026-06-17T00:50:47.700", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2016-09-26T19:59:01.597", "references": [{"source": "secalert@redhat.com", "url": "http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759"}, {"source": "secalert@redhat.com", "url": "http://www-01.ibm.com/support/docview.wss?uid=swg21995039"}, {"source": "secalert@redhat.com", "url": "http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html"}, {"source": "secalert@redhat.com", "url": "http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html"}, {"source": "secalert@redhat.com", "url": "http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html"}, {"source": "secalert@redhat.com", "url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html"}, {"source": "secalert@redhat.com", "url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html"}, {"source": "secalert@redhat.com", "url": "http://www.securityfocus.com/bid/93149"}, {"source": "secalert@redhat.com", "url": "http://www.securitytracker.com/id/1036879"}, {"source": "secalert@redhat.com", "url": "https://bto.bluecoat.com/security-advisory/sa132"}, {"source": "secalert@redhat.com", "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"}, {"source": "secalert@redhat.com", "url": "https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=63658103d4441924f8dbfc517b99bb54758a98b9"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Issue Tracking"], "url": "https://github.com/openssl/openssl/issues/1563"}, {"source": "secalert@redhat.com", "url": "https://security.gentoo.org/glsa/201612-16"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://www.openssl.org/news/secadv/20160922.txt"}, {"source": "secalert@redhat.com", "url": "https://www.tenable.com/security/tns-2016-16"}, {"source": "secalert@redhat.com", "url": "https://www.tenable.com/security/tns-2016-20"}, {"source": "secalert@redhat.com", "url": "https://www.tenable.com/security/tns-2016-21"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www-01.ibm.com/support/docview.wss?uid=swg21995039"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/93149"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securitytracker.com/id/1036879"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://bto.bluecoat.com/security-advisory/sa132"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=63658103d4441924f8dbfc517b99bb54758a98b9"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking"], "url": "https://github.com/openssl/openssl/issues/1563"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.gentoo.org/glsa/201612-16"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.openssl.org/news/secadv/20160922.txt"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.tenable.com/security/tns-2016-16"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.tenable.com/security/tns-2016-20"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.tenable.com/security/tns-2016-21"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank the OpenSSL project for reporting this issue. Upstream acknowledges Alex Gaynor as the original reporter.", "bugzilla": {"description": "openssl: SSL_peek() hang on empty record", "id": "1378127", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1378127"}, "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"}, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-835", "details": ["The ssl3_read_bytes function in record/rec_layer_s3.c in OpenSSL 1.1.0 before 1.1.0a allows remote attackers to cause a denial of service (infinite loop) by triggering a zero-length record in an SSL_peek call."], "name": "CVE-2016-6305", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "openssl097a", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "openssl098e", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "openssl098e", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:5", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat JBoss Enterprise Application Platform 5"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:6", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat JBoss Enterprise Application Platform 6"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:1", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat JBoss Enterprise Web Server 1"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:2", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat JBoss Enterprise Web Server 2"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:3", "fix_state": "Not affected", "package_name": "openssl", "product_name": "Red Hat JBoss Enterprise Web Server 3"}], "public_date": "2016-09-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-6305\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-6305\nhttps://www.openssl.org/news/secadv/20160922.txt"], "threat_severity": "Moderate"}

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