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.
CVSS Severity (version 2.0):
Impact Subscore: 10.0
Exploitability Subscore: 4.9
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: High
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
"Successful exploitation requires that the attacker knows the email address of the target user."
The vendor has released version 6.2.1 to address this issue.
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20070717 [Sec-1 Ltd] Advisory: MailMarshal Spam Quarantine Password Retrieval Vulnerability
Vulnerable software and versions