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Cisco Bug: CSCus36846 - Proxy incorrectly detecting certain access as MIME type audio/mpeg

Last Modified

Sep 01, 2016

Products (1)

  • Cisco Web Security Appliance

Known Affected Releases

8.0.6-119 8.5.0-497

Description (partial)

Mime type is not showing correct information in appliance access logs

Download an excel file from link:
However in the accesslogs is showing MIME type as audio/mpeg while the file is actually just excel file.

Below is the accesslog from WSA:
1420430316.193 3844 TCP_MISS/200 79938 GET - DIRECT/ audio/mpeg <IW_busi,0.0,0,"-",0,0,0,0,"-",-1,0,-1,"-",-,-,"-","-",-,-,IW_busi,-,"Unknown","-","MPEG","Media","-","-",166.36,0,-,"Unknown","-",-,"-",-,-,"-","-"> - 8965 "05/Jan/2015:14:58:36 +1100" - 431 1420430316.193 "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:34.0) Gecko/20100101 Firefox/34.0"

Taken packet capture file, the remote side is actually sending correct Mime type of text/xls
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