Ticket #109 (new defect)

Opened 6 months ago

Last modified 1 month ago

Incorrect parsing of 802.11 frame with radiotap and FCS

Reported by: no.hopeatgmail.com Assigned to: pbi
Priority: minor Milestone:
Component: Scapy Version:
Keywords: Cc:

Description

Attached is a pcap dump file with a frame that is incorrectly parsed.

The frame consists of a radiotap header, 802.11 beacon data, followed by 802.11 FCS.

Radiotap layer from #30 correctly parses the radiotap fields, but puts the rest of the frame into the "padding" field.

I am on x86_64.

Attachments

frame.pcap (240 bytes) - added by no.hopeatgmail.com on 04/23/08 04:53:57.
incorrectly parsed 802.11 frame

Change History

04/23/08 04:53:57 changed by no.hopeatgmail.com

  • attachment frame.pcap added.

incorrectly parsed 802.11 frame

09/10/08 14:39:40 changed by pbi

  • priority changed from major to minor.

Almost works for me with 2.0.0.7 and probably many other befores. Only the FCS is not correctly decoded but interpreted as a Dot11Elt. 

>>> a[0].show()
###[ RadioTap dummy ]###
  version= 0
  pad= 0
  len= 26
  present= TSFT+Flags+Rate+Channel+dBm_AntSignal+dBm_AntNoise+Antenna+dB_AntSignal
  notdecoded= '\xc1y\xec"\x00\x00\x00\x00\x12\x02\x85\t\x80\x04\xcb\xa0\x02+'
###[ 802.11 ]###
     subtype= 8L
     type= Management
     proto= 0L
     FCfield= 
     ID= 0
     addr1= ff:ff:ff:ff:ff:ff
     addr2= 00:13:1a:30:6a:91
     addr3= 00:13:1a:30:6a:91
     SC= 21824
     addr4= None
###[ 802.11 Beacon ]###
        timestamp= 1690512386322L
        beacon_interval= 100
        cap= ESS+short-preamble
###[ 802.11 Information Element ]###
           ID= SSID
           len= 7
           info= 'tsunami'
###[ 802.11 Information Element ]###
              ID= Rates
              len= 8
              info= '\x82\x04\x0b\x0c\x12\x16\x18$'
###[ 802.11 Information Element ]###
                 ID= DSset
                 len= 1
                 info= '\x06'
###[ 802.11 Information Element ]###
                    ID= TIM
                    len= 4
                    info= '\x00\x02\x00\x00'
###[ 802.11 Information Element ]###
                       ID= ERPinfo
                       len= 1
                       info= '\x03'
###[ 802.11 Information Element ]###
                          ID= ESRates
                          len= 4
                          info= '0H`l'
###[ 802.11 Information Element ]###
                             ID= 133
                             len= 30
                             info= '\x00\x00\x84\x00\x0f\x00\xff\x03\x19\x00aironet-7e\x00\x00\x00\x00\x00\x00\x07\x00\x00%'
###[ 802.11 Information Element ]###
                                ID= vendor
                                len= 6
                                info= '\x00@\x96\x01\x01\x01'
###[ 802.11 Information Element ]###
                                   ID= vendor
                                   len= 5
                                   info= '\x00@\x96\x03\x03'
###[ 802.11 Information Element ]###
                                      ID= vendor
                                      len= 22
                                      info= '\x00@\x96\x04\x00\x0c\x07\xa4\x00\x00#\xa4\x00\x00BC\x00\x00b2\x00\x00'
###[ 802.11 Information Element ]###
                                         ID= vendor
                                         len= 24
                                         info= "\x00P\xf2\x02\x01\x01\x0c\x00\x03\xa4\x00\x00'\xa4\x00\x00BC^\x00b2/\x00"
###[ 802.11 Information Element ]###
                                            ID= 177
                                            len= 143
                                            info= '\xc6\xe8'

Add/Change #109 (Incorrect parsing of 802.11 frame with radiotap and FCS)




Change Properties
Action