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Vigil@nce: MySQL, buffer overflow via yaSSL

February 2010 by Vigil@nce

When MySQL is compiled with yaSSL, an attacker can send an invalid
certificate, in order to generate a denial of service or to
execute code.

 Severity: 2/4
 Consequences: user access/rights, denial of service of service
 Provenance: intranet client
 Means of attack: 1 attack
 Ability of attacker: technician (2/4)
 Confidence: confirmed by the editor (5/5)
 Diffusion of the vulnerable configuration: medium (2/3)
 Creation date: 26/01/2010
 Revision date: 28/01/2010

IMPACTED PRODUCTS

 MySQL Community Server
 MySQL Enterprise

DESCRIPTION OF THE VULNERABILITY

The yaSSL library implements SSL. MySQL contains a copy of yaSSL.

When MySQL is compiled with yaSSL (./configure —with-ssl), it is
thus impacted by the VIGILANCE-VUL-9384 vulnerability.

An attacker can therefore send an invalid certificate, in order to
generate a denial of service or to execute code on applications
linked with yaSSL.

CHARACTERISTICS

 Identifiers: BID-37943, CVE-2009-4484, VIGILANCE-VUL-9380
Pointed by: VIGILANCE-VUL-9000, VIGILANCE-VUL-9384
 Url: http://vigilance.fr/vulnerability/MySQL-buffer-overflow-via-yaSSL-9380


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