The password reset feature in the Spam Quarantine HTTP interface for MailMarshal SMTP 6.2.0.x before 6.2.1 allows remote attackers to modify arbitrary account information via a UserId variable with a large amount of trailing whitespace followed by a malicious value, which triggers SQL buffer truncation due to length inconsistencies between variables.
http://www.securityfocus.com/bid/24936
http://www.sec-1labs.co.uk/advisories/BTA_Full.pdf
http://securityreason.com/securityalert/2895
http://secunia.com/advisories/26018
http://lists.grok.org.uk/pipermail/full-disclosure/2007-July/064676.html