Wireshark – add_ff_vht_compressed_beamforming_report Static Out-of-Bounds Read

  • 作者： Google Security Research
    日期： 2016-02-22
  • 类别：
    平台：
  • 来源：https://www.exploit-db.com/exploits/39483/
  • Source: https://code.google.com/p/google-security-research/issues/detail?id=654

The following crash due to an out-of-bounds read from static memory can be observed in an ASAN build of Wireshark (current git master), by feeding a malformed file to tshark ("$ ./tshark -nVxr /path/to/file"):

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==32475==ERROR: AddressSanitizer: global-buffer-overflow on address 0x7fd688698b10 at pc 0x7fd685351320 bp 0x7ffd862371a0 sp 0x7ffd86237198
READ of size 4 at 0x7fd688698b10 thread T0
#0 0x7fd68535131f in add_ff_vht_compressed_beamforming_report wireshark/epan/dissectors/packet-ieee80211.c:9143:8
#1 0x7fd68534746f in add_ff_action_vht wireshark/epan/dissectors/packet-ieee80211.c:9199:16
#2 0x7fd68533f813 in add_ff_action wireshark/epan/dissectors/packet-ieee80211.c:9426:12
#3 0x7fd685324811 in add_fixed_field wireshark/epan/dissectors/packet-ieee80211.c:9566:14
#4 0x7fd68536ebae in dissect_ieee80211_mgt wireshark/epan/dissectors/packet-ieee80211.c:16388:17
#5 0x7fd685368cce in dissect_ieee80211_common wireshark/epan/dissectors/packet-ieee80211.c:18218:7
#6 0x7fd685338dae in dissect_ieee80211 wireshark/epan/dissectors/packet-ieee80211.c:18375:10
#7 0x7fd6842c7cc1 in call_dissector_through_handle wireshark/epan/packet.c:616:8
#8 0x7fd6842ba5ea in call_dissector_work wireshark/epan/packet.c:691:9
#9 0x7fd6842b9dbd in dissector_try_uint_new wireshark/epan/packet.c:1148:9
#10 0x7fd684fc95f6 in dissect_frame wireshark/epan/dissectors/packet-frame.c:500:11
#11 0x7fd6842c7cc1 in call_dissector_through_handle wireshark/epan/packet.c:616:8
#12 0x7fd6842ba5ea in call_dissector_work wireshark/epan/packet.c:691:9
#13 0x7fd6842c42be in call_dissector_only wireshark/epan/packet.c:2662:8
#14 0x7fd6842b5ccf in call_dissector_with_data wireshark/epan/packet.c:2675:8
#15 0x7fd6842b533b in dissect_record wireshark/epan/packet.c:501:3
#16 0x7fd6842633c9 in epan_dissect_run_with_taps wireshark/epan/epan.c:373:2
#17 0x5264eb in process_packet wireshark/tshark.c:3728:5
#18 0x51f960 in load_cap_file wireshark/tshark.c:3484:11
#19 0x515daf in main wireshark/tshark.c:2197:13

0x7fd688698b10 is located 48 bytes to the left of global variable '<string literal>' defined in 'packet-ieee80211.c:9115:70' (0x7fd688698b40) of size 30
'<string literal>' is ascii string 'Average Signal to Noise Ratio'
0x7fd688698b10 is located 0 bytes to the right of global variable 'ns_arr' defined in 'packet-ieee80211.c:9091:20' (0x7fd688698ae0) of size 48
SUMMARY: AddressSanitizer: global-buffer-overflow wireshark/epan/dissectors/packet-ieee80211.c:9143:8 in add_ff_vht_compressed_beamforming_report
Shadow bytes around the buggy address:
0x0ffb510cb110: f9 f9 f9 f9 00 00 00 00 00 00 04 f9 f9 f9 f9 f9
0x0ffb510cb120: 00 00 00 07 f9 f9 f9 f9 00 00 07 f9 f9 f9 f9 f9
0x0ffb510cb130: 00 00 06 f9 f9 f9 f9 f9 00 00 00 00 00 03 f9 f9
0x0ffb510cb140: f9 f9 f9 f9 00 00 00 00 00 02 f9 f9 f9 f9 f9 f9
0x0ffb510cb150: 00 00 00 00 00 00 00 00 f9 f9 f9 f9 00 00 00 00
=>0x0ffb510cb160: 00 00[f9]f9 f9 f9 f9 f9 00 00 00 06 f9 f9 f9 f9
0x0ffb510cb170: 00 00 00 05 f9 f9 f9 f9 00 00 00 00 00 00 00 01
0x0ffb510cb180: f9 f9 f9 f9 00 00 04 f9 f9 f9 f9 f9 00 00 03 f9
0x0ffb510cb190: f9 f9 f9 f9 00 00 00 07 f9 f9 f9 f9 00 00 00 00
0x0ffb510cb1a0: 00 00 00 00 00 00 00 00 00 02 f9 f9 f9 f9 f9 f9
0x0ffb510cb1b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 f9 f9 f9
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07 
Heap left redzone: fa
Heap right redzone:fb
Freed heap region: fd
Stack left redzone:f1
Stack mid redzone: f2
Stack right redzone: f3
Stack partial redzone: f4
Stack after return:f5
Stack use after scope: f8
Global redzone:f9
Global init order: f6
Poisoned by user:f7
Container overflow:fc
Array cookie:ac
Intra object redzone:bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone:cb
==32475==ABORTING
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The crash was reported at https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=11818. Attached are three files which trigger the crash.


Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39483.zip