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": "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)",
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"title": "Red Hat Security Advisory: mariadb-galera security and bug fix update",
"tracking": {
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"vulnerabilities": [
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"name": "Incorrect Permission Assignment for Critical Resource"
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"discovery_date": "2016-09-12T00:00:00+00:00",
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"text": "1375198"
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"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"
},
{
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"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"
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"summary": "RHBZ#1375198",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1375198"
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"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.",
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{
"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.",
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"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": [
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"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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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.