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Los ataques contra DH512 se consideran simplemente factibles. Sin embargo, para un ataque, el objetivo tendr\u00eda que reutilizar la clave privada DH512, que de todos modos no se recomienda. Tambi\u00e9n las aplicaciones que usan directamente la API de bajo nivel BN_mod_exp pueden verse afectadas si usan BN_FLG_CONSTTIME. Corregido en OpenSSL 1.1.1e (afectado 1.1.1-1.1.1d). Corregido en OpenSSL 1.0.2u (afectado 1.0.2-1.0.2t)."}], "id": "CVE-2019-1551", "lastModified": "2023-11-07T03:08:28.980", "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}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-12-06T18:15:12.840", "references": [{"source": "openssl-security@openssl.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00030.html"}, {"source": "openssl-security@openssl.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/155754/Slackware-Security-Advisory-openssl-Updates.html"}, {"source": "openssl-security@openssl.org", "url": "https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=419102400a2811582a7a3d4a4e317d72e5ce0a8f"}, {"source": "openssl-security@openssl.org", "url": "https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=f1c5eea8a817075d31e43f5876993c6710238c98"}, {"source": "openssl-security@openssl.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00023.html"}, {"source": "openssl-security@openssl.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDHOAATPWJCXRNFMJ2SASDBBNU5RJONY/"}, {"source": "openssl-security@openssl.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EXDDAOWSAIEFQNBHWYE6PPYFV4QXGMCD/"}, {"source": "openssl-security@openssl.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XVEP3LAK4JSPRXFO4QF4GG2IVXADV3SO/"}, {"source": "openssl-security@openssl.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://seclists.org/bugtraq/2019/Dec/39"}, {"source": "openssl-security@openssl.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://seclists.org/bugtraq/2019/Dec/46"}, {"source": "openssl-security@openssl.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202004-10"}, {"source": "openssl-security@openssl.org", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20191210-0001/"}, {"source": "openssl-security@openssl.org", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4376-1/"}, {"source": "openssl-security@openssl.org", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4504-1/"}, {"source": "openssl-security@openssl.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2019/dsa-4594"}, {"source": "openssl-security@openssl.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2021/dsa-4855"}, {"source": "openssl-security@openssl.org", "tags": ["Vendor Advisory"], "url": "https://www.openssl.org/news/secadv/20191206.txt"}, {"source": "openssl-security@openssl.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpuApr2021.html"}, {"source": "openssl-security@openssl.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpujan2021.html"}, {"source": "openssl-security@openssl.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpujul2020.html"}, {"source": "openssl-security@openssl.org", "tags": ["Third Party Advisory"], "url": "https://www.tenable.com/security/tns-2019-09"}, {"source": "openssl-security@openssl.org", "tags": ["Third Party Advisory"], "url": "https://www.tenable.com/security/tns-2020-03"}, {"source": "openssl-security@openssl.org", "tags": ["Third Party Advisory"], "url": "https://www.tenable.com/security/tns-2020-11"}, {"source": "openssl-security@openssl.org", "tags": ["Third Party Advisory"], "url": "https://www.tenable.com/security/tns-2021-10"}], "sourceIdentifier": "openssl-security@openssl.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-apr-0:1.6.3-104.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-apr-util-0:1.6.1-75.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-brotli-0:1.0.6-38.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-curl-0:7.64.1-44.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-httpd-0:2.4.37-64.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-jansson-0:2.11-53.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-mod_cluster-native-0:1.3.14-11.Final_redhat_2.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-mod_http2-0:1.15.7-11.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-mod_jk-0:1.2.48-10.redhat_1.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-mod_md-1:2.0.8-30.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-mod_security-0:2.9.2-57.GA.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-nghttp2-0:1.39.2-34.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el6", "package": "jbcs-httpd24-openssl-1:1.1.1c-32.jbcs.el6", "product_name": "JBoss Core Services on RHEL 6", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-apr-0:1.6.3-104.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-apr-util-0:1.6.1-75.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-brotli-0:1.0.6-38.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-curl-0:7.64.1-44.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-httpd-0:2.4.37-64.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-jansson-0:2.11-53.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_cluster-native-0:1.3.14-11.Final_redhat_2.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_http2-0:1.15.7-11.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_jk-0:1.2.48-10.redhat_1.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_md-1:2.0.8-30.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-mod_security-0:2.9.2-57.GA.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-nghttp2-0:1.39.2-34.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-openssl-1:1.1.1c-32.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4384", "cpe": "cpe:/a:redhat:jboss_core_services:1::el7", "package": "jbcs-httpd24-openssl-chil-0:1.0.0-1.jbcs.el7", "product_name": "JBoss Core Services on RHEL 7", "release_date": "2020-10-28T00:00:00Z"}, {"advisory": "RHSA-2020:4514", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "openssl-1:1.1.1g-11.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-11-04T00:00:00Z"}, {"advisory": "RHSA-2020:4383", "cpe": "cpe:/a:redhat:jboss_core_services:1", "package": "openssl", "product_name": "Red Hat JBoss Core Services 1", "release_date": "2020-10-28T00:00:00Z"}], "bugzilla": {"description": "openssl: Integer overflow in RSAZ modular exponentiation on x86_64", "id": "1780995", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1780995"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N", "status": "verified"}, "cwe": "CWE-190", "details": ["There is an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH512 are considered just feasible. However, for an attack the target would have to re-use the DH512 private key, which is not recommended anyway. Also applications directly using the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME. Fixed in OpenSSL 1.1.1e (Affected 1.1.1-1.1.1d). Fixed in OpenSSL 1.0.2u (Affected 1.0.2-1.0.2t).", "An integer overflow was found in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. As per upstream:\n* No EC algorithms are affected. \n* Attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely. \n* Attacks against DH512 are considered just feasible. However, for an attack the target would have to re-use the DH512 private key, which is not recommended anyway.\n* Also applications directly using the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME"], "mitigation": {"lang": "en:us", "value": "For Red Hat Enterprise Linux 7, 512 bit DH is already disabled. As this bug is about leakage of the private key to the attacker, it should be fully sufficient to just not use 1024 bit RSA keys or 1024 bit DSA keys. These keys are not secure enough anyway. 3-prime RSA keys are not supported on RHEL-7.\nFor Red Hat Enterprise 8, The DEFAULT crypto policy already disables all these key sizes.\nAlso applications compiled with openssl which use the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME, other users of this API are not affected by this flaw."}, "name": "CVE-2019-1551", "package_state": [{"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": "Will not fix", "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:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "compat-openssl10", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:6", "fix_state": "Out of support scope", "package_name": "openssl", "product_name": "Red Hat JBoss Enterprise Application Platform 6"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_web_server:2", "fix_state": "Out of support scope", "package_name": "openssl", "product_name": "Red Hat JBoss Enterprise Web Server 2"}], "public_date": "2019-12-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-1551\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-1551\nhttps://github.com/openssl/openssl/pull/10575\nhttps://www.openssl.org/news/secadv/20191206.txt"], "statement": "Accelerated modular exponentiation for Intel processors (RSAZ) was introduced in openssl-1.0.2, therefore older versions of OpenSSL are not affected by this flaw.", "threat_severity": "Low", "upstream_fix": "openssl 1.1.1e"}