-----BEGIN PGP SIGNED MESSAGE----- ============================================================================= FreeBSD-SA-01:16 Security Advisory FreeBSD, Inc. Topic: mysql may allow remote users to gain increased privileges Category: ports Module: mysql322-server/mysql323-server Announced: 2001-01-29 Credits: Nicolas GREGOIRE Affects: Ports collection prior to the correction date. Corrected: 2001-01-19 Vendor status: Updated version released FreeBSD only: NO I. Background mysql is a high-performance database server. II. Problem Description The mysql323-server port, versions prior to 3.23.22, and all mysql322-server ports contain remote vulerabilities. Due to a buffer overflow, a malicious remote user can cause a denial-of-service by crashing the database. Additionally, the attacker may be able to gain the privileges of the mysqld user, allowing access to all databases and the ability to leverage other local attacks as the mysqld user. In order to accomplish this, the attacker must have a valid mysql account. The mysql322-server and mysql323-server ports are not installed by default, nor are they "part of FreeBSD" as such: they are part of the FreeBSD ports collection, which contains over 4500 third-party applications in a ready-to-install format. The ports collections shipped with FreeBSD 3.5.1 and 4.2 contain this problem since it was discovered after the releases. FreeBSD makes no claim about the security of these third-party applications, although an effort is underway to provide a security audit of the most security-critical ports. III. Impact Malicious remote mysql users may cause a denial-of-service and potentially gain access as the mysqld user, allowing access to all databases on the mysql server and the ability to leverage other local attacks as the mysqld user. If you have not chosen to install the mysql322-server or mysql323-server ports/packages, then your system is not vulnerable to this problem. IV. Workaround Deinstall the mysql322-server or mysql323-server port/package, if you have installed it. V. Solution Note: the mysql322-server port has been removed since mysql 3.23 is now the stable mysql branch. People using older mysql322-server ports/packages are urged to update to the mysql323-server port/package. One of the following: 1) Upgrade your entire ports collection and rebuild the mysql323-server port. 2) Deinstall the old package and install a new package dated after the correction date, obtained from: [i386] ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-3-stable/databases/mysql-3.23.32.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/databases/mysql-3.23.32.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/databases/mysql-3.23.32.tgz [alpha] Packages are not automatically generated for the alpha architecture at this time due to lack of build resources. 3) download a new port skeleton for the mysql323-server port from: http://www.freebsd.org/ports/ and use it to rebuild the port. 4) Use the portcheckout utility to automate option (3) above. The portcheckout port is available in /usr/ports/devel/portcheckout or the package can be obtained from: ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-3-stable/devel/portcheckout-2.0.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/devel/portcheckout-2.0.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-stable/devel/portcheckout-2.0.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/devel/portcheckout-2.0.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/devel/portcheckout-2.0.tgz -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.4 (FreeBSD) Comment: For info see http://www.gnupg.org iQCVAwUBOnXg81UuHi5z0oilAQEIKgP/fLnAPAIJt33PQl6NYnBzivsjX0/w0TGW MVkX3OAz14EZYGEajJJfCf2QboqvDYMMuoYNQS3MF8eTmSNQxpzDpRzFyU8zeiUj UnAzKWk+4vjTRkM8BcQHuXfsuzh/H1KjENjo+gbCrmXitLWjuFSS9l/U91tWeyMM sQevoqqqXQE= =8xko -----END PGP SIGNATURE-----