Some security issues have been reported in Clavister CorePlus, which potentially can be exploited by malicious users to cause a DoS (Denial of Service) and by malicious people to bypass certain security restrictions.
1) An unspecified error in the in the IKE negotiation when validating certificates can cause the gateway to stop responding.
Successful exploitation requires a valid certificate.
2) An unspecified error when processing SMTP headers can be exploited to bypass the SMTP ALG allowing mails from blacklisted addresses to pass through.
3) An unspecified error results in small files not being scanned by the Antivirus-Engine when passing the HTTP-ALG.
Solution: Update to Clavister CorePlus version 8.81.01 or Clavister CorePlus version 8.80.04 or later.
Provided and/or discovered by: Reported by the vendor.
Original Advisory: http://www.clavister.com/releasenotes/CorePlus_Release_Notes_8_81_01.pdf
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