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Cisco Bug: CSCta04885 - CSS May omit headers when processing client certificates

Last Modified

Sep 23, 2017

Products (1)

  • Cisco CSS 11000 Series Content Services Switches

Known Affected Releases


Description (partial)

An issue in the validation of HTTP Requests by researcher George D. Gal of Virtual Security Research LLC.

This is documented at the following IntelliShield alert:


The CSS will only insert client certificate header information when a HTTP header terminator uses carriage return/line feed (CRLF) as per RFC 2612. Some web servers may however allow various permutations of this end-of-line terminator. If an unrecognized end-of-line terminator is detected client certificate header information insertion may fail.
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