Vulnerability Note VU#645326

MySQL fails to properly handle overly long "scramble" values

Original Release date: 12 Jul 2004 | Last revised: 21 Jul 2004


There is a buffer overflow vulnerability in the way MySQL handles overly long "scramble" strings, which could allow an attacker to cause a denial of service or potentially execute arbitrary code.


MySQL is an open-source database system available for Microsoft Windows, Linux, and other UNIX-based operating systems. There is a vulnerability in MySQL in which an overly long "scramble" string generated by the my_rnd() function could cause a buffer overflow to occur. It has been reported that versions 4.1 prior to 4.1.3 and version 5.0 are affected.


A remote, unauthenticated attacker could cause a denial of service or potentially execute code of the attacker's choice.



According to the NGSSoftware Security Advisory, this vulnerability has been fixed in version 4.1.3 (Beta) and version 5.0 (Alpha).

Note: Users should exercise caution before installing beta or alpha releases.

Restrict access

Block or restrict access to the MySQL service (typically 3306/tcp) from untrusted networks such as the Internet.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
MySQLAffected-12 Jul 2004
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



This vulnerability was reported by Chris Anley of NGSSoftware.

This document was written by Damon Morda.

Other Information

  • CVE IDs: CAN-2004-0628
  • Date Public: 01 Jul 2004
  • Date First Published: 12 Jul 2004
  • Date Last Updated: 21 Jul 2004
  • Severity Metric: 2.23
  • Document Revision: 15


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