This issue manifests itself when certain Application Filters are activated within a policy set, with any flow control action (Block, Permit, Trust, Rate Limit). When the filter is incorrectly evaluated it causes the defined action to not be taken and notifications to not be sent.

Application Filters Affected:

6509, 6900, 8730, 9624, 9987, 12625, 13055, 13060, 13061, 13067, 13081, 13083, 13130, 13153, 13181, 13609, 13618, 13624, 13712, 13715, 13833, 13885, 13962, 13966, 16661, 16714, 16805, 16881, 16933, 16940, 16941, 16963, 16978, 16981, 16982, 16993, 17027, 17030, 17055, 17059, 17062, 17083, 19232, 19434, 19461, 19585

There are no Security Filters affected by this issue.

Mitigations:

We have fixed the incorrect evaluation of the affected filters. This resolution will be included in the next TPS TOS release.

A mitigation can be applied now (before the next TPS TOS release) to resolve the incorrect evaluation of the affected Application Filters. For details on how to implement the mitigation or if you have concerns or further questions regarding this issue, contact the Trend Micro TippingPoint Technical Assistance Center (TAC).


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