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Cisco Bug: CSCsz01229 - Multistring Engine False Negative

Last Modified

May 20, 2010

Products (1)

  • Cisco IPS 4200 Series Sensors

Known Affected Releases


Description (partial)

Some multistring components may not fire due to the match length being miscalculated.
This is a rare situation, but can be seen with signatures using the "match length" parameter,
which has a counting irregularity.

Certain patterns and lengths in a TCP stream can stimulate the condition.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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