rhsa-2016_2059
Vulnerability from csaf_redhat
Published
2016-10-13 14:13
Modified
2024-11-14 20:48
Summary
Red Hat Security Advisory: mariadb-galera security and bug fix update

Notes

Topic
An update for mariadb-galera is now available for Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
MariaDB is a multi-user, multi-threaded SQL database server that is binary compatible with MySQL. Galera is a synchronous multi-master cluster for MariaDB. Security Fix(es): * It was discovered that the MySQL logging functionality allowed writing to MySQL configuration files. An administrative database user, or a database user with FILE privileges, could possibly use this flaw to run arbitrary commands with root privileges on the system running the database server. (CVE-2016-6662) Bug Fix(es): * Because Red Hat Enterprise Linux 7.3 changed the return format of the "systemctl is-enabled" command as consumed by shell scripts, the mariadb-galera RPM package, upon installation, erroneously detected that the MariaDB service was enabled when it was not. As a result, the Red Hat OpenStack Platform installer, which then tried to run mariadb-galera using Pacemaker and not systemd, failed to start Galera. With this update, mariadb-galera's RPM installation scripts now use a different systemctl command, correctly detecting the default MariaDB as disabled, and the installer can succeed. (BZ#1376908) * Previously, both the mariadb-server and mariadb-galera-server packages shipped the client-facing libraries, dialog.so and mysql_clear_password.so. As a result, the mariadb-galera-server package would fail to install because of package conflicts. With this update, these libraries have been moved from mariadb-galera-server to mariadb-libs, and the mariadb-galera-server package installs successfully. (BZ#1376902)
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


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        "text": "An update for mariadb-galera is now available for Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7.\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.",
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        "text": "MariaDB is a multi-user, multi-threaded SQL database server that is binary compatible with MySQL. Galera is a synchronous multi-master cluster for MariaDB.\n\nSecurity Fix(es):\n\n* It was discovered that the MySQL logging functionality allowed writing to MySQL configuration files. An administrative database user, or a database user with FILE privileges, could possibly use this flaw to run arbitrary commands with root privileges on the system running the database server. (CVE-2016-6662)\n\nBug Fix(es):\n\n* Because Red Hat Enterprise Linux 7.3 changed the return format of the \"systemctl is-enabled\" command as consumed by shell scripts, the mariadb-galera RPM package, upon installation, erroneously detected that the MariaDB service was enabled when it was not. As a result, the Red Hat OpenStack Platform installer, which then tried to run mariadb-galera using Pacemaker and not systemd, failed to start Galera. With this update, mariadb-galera\u0027s RPM installation scripts now use a different systemctl command, correctly detecting the default MariaDB as disabled, and the installer can succeed. (BZ#1376908)\n\n* Previously, both the mariadb-server and mariadb-galera-server packages shipped the client-facing libraries, dialog.so and mysql_clear_password.so. As a result, the mariadb-galera-server package would fail to install because of package conflicts. With this update, these libraries have been moved from mariadb-galera-server to mariadb-libs, and the mariadb-galera-server package installs successfully. (BZ#1376902)",
        "title": "Details"
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    "title": "Red Hat Security Advisory: mariadb-galera security and bug fix update",
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  "vulnerabilities": [
    {
      "cve": "CVE-2016-6662",
      "cwe": {
        "id": "CWE-732",
        "name": "Incorrect Permission Assignment for Critical Resource"
      },
      "discovery_date": "2016-09-12T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1375198"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "It was discovered that the MySQL logging functionality allowed writing to MySQL configuration files. An administrative database user, or a database user with FILE privileges, could possibly use this flaw to run arbitrary commands with root privileges on the system running the database server.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "mysql: general_log can write to configuration files, leading to privilege escalation (CPU Oct 2016)",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "All MySQL and MariaDB packages in Red Hat Enterprise Linux and Red Hat Software Collections install the my.cnf configuration file in /etc as root-owned and not writeable to mysqld\u0027s mysql user. This default configuration stops the published exploit for this issue.\n\nAll MySQL and MariaDB packages for Red Hat Enterprise Linux 7 (either those directly included in Red Hat Enterprise Linux 7 or from Red Hat Software Collections for Red Hat Enterprise Linux 7) run mysqld_safe with mysql user privileges and not root privileges, limiting the potential impact to code execution as mysql system user.\n\nThe MySQL 5.1 packages in Red Hat Enterprise Linux 6 do not implement support for library preloading, completely preventing the remote attack vector used by the published exploit.\n\nFor additional details, refer to:\n\nhttps://bugzilla.redhat.com/show_bug.cgi?id=1375198#c12",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
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          "7Server-RH7-RHOS-5.0:mariadb-galera-common-1:5.5.42-1.2.el7ost.x86_64",
          "7Server-RH7-RHOS-5.0:mariadb-galera-debuginfo-1:5.5.42-1.2.el7ost.x86_64",
          "7Server-RH7-RHOS-5.0:mariadb-galera-server-1:5.5.42-1.2.el7ost.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2016-6662"
        },
        {
          "category": "external",
          "summary": "RHBZ#1375198",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1375198"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2016-6662",
          "url": "https://www.cve.org/CVERecord?id=CVE-2016-6662"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2016-6662",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-6662"
        },
        {
          "category": "external",
          "summary": "https://legalhackers.com/advisories/MySQL-Exploit-Remote-Root-Code-Execution-Privesc-CVE-2016-6662.txt",
          "url": "https://legalhackers.com/advisories/MySQL-Exploit-Remote-Root-Code-Execution-Privesc-CVE-2016-6662.txt"
        }
      ],
      "release_date": "2016-09-12T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2016-10-13T14:13:54+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nAfter installing this update, the MariaDB server daemon (mysqld) will be restarted automatically.",
          "product_ids": [
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            "7Server-RH7-RHOS-5.0:mariadb-galera-common-1:5.5.42-1.2.el7ost.x86_64",
            "7Server-RH7-RHOS-5.0:mariadb-galera-debuginfo-1:5.5.42-1.2.el7ost.x86_64",
            "7Server-RH7-RHOS-5.0:mariadb-galera-server-1:5.5.42-1.2.el7ost.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2016:2059"
        },
        {
          "category": "workaround",
          "details": "- Ensure all MySQL / MariaDB configuration files are not writeable to the mysql user. This is the default configuration in Red Hat products.\n\n- Ensure that non-administrative database users are not granted FILE privilege. Applications accessing data in MySQL / MariaDB databases, including web application potentially vulnerable to SQL injections, should use database accounts with the lowest privileges required.\n\n- If FILE permission needs to be granted to some non-administrative database users, use secure_file_priv setting to limit where files can be written to or read from.",
          "product_ids": [
            "7Server-RH7-RHOS-5.0:mariadb-galera-1:5.5.42-1.2.el7ost.src",
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            "7Server-RH7-RHOS-5.0:mariadb-galera-debuginfo-1:5.5.42-1.2.el7ost.x86_64",
            "7Server-RH7-RHOS-5.0:mariadb-galera-server-1:5.5.42-1.2.el7ost.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "HIGH",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 7.1,
            "confidentialityImpact": "COMPLETE",
            "integrityImpact": "COMPLETE",
            "vectorString": "AV:N/AC:H/Au:S/C:C/I:C/A:C",
            "version": "2.0"
          },
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "7Server-RH7-RHOS-5.0:mariadb-galera-1:5.5.42-1.2.el7ost.src",
            "7Server-RH7-RHOS-5.0:mariadb-galera-common-1:5.5.42-1.2.el7ost.x86_64",
            "7Server-RH7-RHOS-5.0:mariadb-galera-debuginfo-1:5.5.42-1.2.el7ost.x86_64",
            "7Server-RH7-RHOS-5.0:mariadb-galera-server-1:5.5.42-1.2.el7ost.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "mysql: general_log can write to configuration files, leading to privilege escalation (CPU Oct 2016)"
    }
  ]
}


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