MAILsweeper for SMTP/Exchange contains a flaw that may allow a malicious user to bypass text analysis. The issue is triggered when handling of messages that specify a non-existent character set. It is possible that the flaw may allow filter bypassing resulting in a loss of integrity.
Classification
Location:
Remote / Network Access
Attack Type:
Attack Type Unknown
Impact:
Loss of Integrity
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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