OSVDB ID: 26738 Title: MAILsweeper for SMTP/Exchange Malformed Reverse DNS Data DoS |
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Description |
MAILsweeper for SMTP/Exchange contains a flaw that may allow a remote denial of service. The issue is triggered when handling reverse DNS lookups when the 'Received' header in a message includes non-ASCII characters, and will result in loss of availability for the service. |
Classification |
Location:
Remote / Network Access
Attack Type: Denial of Service Impact: Loss of Availability Exploit: Exploit Unknown Disclosure: Vendor Verified OSVDB: Web Related |
Solution |
Upgrade to version 4.3.20 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds. |
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