Kristian Nielsen

**Name of the Vulnerable Software and Affected Versions** MySQL versions prior to 5.0.23 MySQL versions prior to 5.1.12 **Description** The issue is related to an off-by-one buffer overflow in the Instance options::complete initialization function in instance options.cc in the Instance Manager. This might allow local users to cause a denial of service (application crash) via unspecified vectors, which triggers the overflow when the `convert dirname` function is called. The vendor has disputed this issue, stating that it is only exploitable when the user has access to the configuration file or the Instance Manager daemon, and that this level of access would already allow the user to disrupt program operation. **Recommendations** For MySQL versions prior to 5.0.23, update to version 5.0.23 or later. For MySQL versions prior to 5.1.12, update to version 5.1.12 or later.