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[ GLSA 200501-33 ] MySQL: Insecure temporary file creation
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GLSA
Bodhisattva
Bodhisattva


Joined: 25 Feb 2003
Posts: 3827
Location: Essen, Germany

PostPosted: Mon Jan 24, 2005 10:15 am    Post subject: [ GLSA 200501-33 ] MySQL: Insecure temporary file creation Reply with quote

Gentoo Linux Security Advisory

Title: MySQL: Insecure temporary file creation (GLSA 200501-33)
Severity: normal
Exploitable: local
Date: January 23, 2005
Bug(s): #77805
ID: 200501-33

Synopsis

MySQL is vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files.

Background

MySQL is a fast, multi-threaded, multi-user SQL database server.

Affected Packages

Package: dev-db/mysql
Vulnerable: < 4.0.22-r2
Unaffected: >= 4.0.22-r2
Architectures: All supported architectures


Description

Javier Fernandez-Sanguino Pena from the Debian Security Audit Project discovered that the 'mysqlaccess' script creates temporary files in world-writeable directories with predictable names.

Impact

A local attacker could create symbolic links in the temporary files directory, pointing to a valid file somewhere on the filesystem. When the mysqlaccess script is executed, this would result in the file being overwritten with the rights of the user running the software, which could be the root user.

Workaround

There is no known workaround at this time.

Resolution

All MySQL users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-db/mysql-4.0.22-r2"


References

CAN-2005-0004
Secunia Advisory SA13867


Last edited by GLSA on Mon May 04, 2009 4:16 am; edited 3 times in total
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