Source: https://code.google.com/p/google-security-research/issues/detail?id=648 The following crash due to a static out-of-bounds read can be observed in an ASAN build of Wireshark (current git master), by feeding a malformed file to tshark ("$ ./tshark -nVxr /path/to/file"): --- cut --- ==7855==ERROR: AddressSanitizer: global-buffer-overflow on address 0x000005676c18 at pc 0x000001ab09d2 bp 0x7ffc9ce376b0 sp 0x7ffc9ce376a8 READ of size 8 at 0x000005676c18 thread T0 #0 0x1ab09d1 in dissect_ber_set wireshark/epan/dissectors/packet-ber.c:2588:64 #1 0x198e7c7 in dissect_ansi_tcap_T_paramSet wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:189:12 #2 0x1ab47f4 in dissect_ber_choice wireshark/epan/dissectors/packet-ber.c:2898:21 #3 0x198e652 in dissect_ansi_tcap_T_parameter_03 wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:210:12 #4 0x1aae8bc in dissect_ber_sequence wireshark/epan/dissectors/packet-ber.c:2400:17 #5 0x198b2f7 in dissect_ansi_tcap_Reject wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:227:12 #6 0x1ab47f4 in dissect_ber_choice wireshark/epan/dissectors/packet-ber.c:2898:21 #7 0x198aee2 in dissect_ansi_tcap_ComponentPDU wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:256:12 #8 0x1abba52 in dissect_ber_sq_of wireshark/epan/dissectors/packet-ber.c:3490:9 #9 0x1abbe2f in dissect_ber_sequence_of wireshark/epan/dissectors/packet-ber.c:3521:12 #10 0x198ae17 in dissect_ansi_tcap_SEQUENCE_OF_ComponentPDU wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:270:12 #11 0x1a966a7 in dissect_ber_tagged_type wireshark/epan/dissectors/packet-ber.c:691:9 #12 0x19898ac in dissect_ansi_tcap_ComponentSequence wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:280:12 #13 0x1aae8bc in dissect_ber_sequence wireshark/epan/dissectors/packet-ber.c:2400:17 #14 0x198e887 in dissect_ansi_tcap_TransactionPDU wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:145:12 #15 0x1988ded in dissect_ansi_tcap_T_queryWithPerm wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:134:12 #16 0x1ab47f4 in dissect_ber_choice wireshark/epan/dissectors/packet-ber.c:2898:21 #17 0x1988b30 in dissect_ansi_tcap_PackageType wireshark/epan/dissectors/../../asn1/ansi_tcap/ansi_tcap.cnf:173:12 #18 0x1988830 in dissect_ansi_tcap wireshark/epan/dissectors/../../asn1/ansi_tcap/packet-ansi_tcap-template.c:385:5 #19 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8 #20 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9 #21 0xaefb1b in call_dissector_only wireshark/epan/packet.c:2662:8 #22 0xae09f3 in call_dissector_with_data wireshark/epan/packet.c:2675:8 #23 0xaefba8 in call_dissector wireshark/epan/packet.c:2692:9 #24 0x16c3f24 in dissect_tcap wireshark/epan/dissectors/../../asn1/tcap/packet-tcap-template.c:2004:14 #25 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8 #26 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9 #27 0xae4e1d in dissector_try_uint_new wireshark/epan/packet.c:1148:9 #28 0x11d6632 in dissect_sccp_data_param wireshark/epan/dissectors/packet-sccp.c:2346:31 #29 0x11d47a1 in dissect_sccp_parameter wireshark/epan/dissectors/packet-sccp.c:2559:5 #30 0x11d5169 in dissect_sccp_variable_parameter wireshark/epan/dissectors/packet-sccp.c:2640:3 #31 0x11cec1e in dissect_sccp_message wireshark/epan/dissectors/packet-sccp.c:2951:5 #32 0x11cc3f9 in dissect_sccp wireshark/epan/dissectors/packet-sccp.c:3402:3 #33 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8 #34 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9 #35 0xae4e1d in dissector_try_uint_new wireshark/epan/packet.c:1148:9 #36 0xae5a38 in dissector_try_uint wireshark/epan/packet.c:1174:9 #37 0xefae51 in dissect_mtp3_payload wireshark/epan/dissectors/packet-mtp3.c:647:8 #38 0xef8466 in dissect_mtp3 wireshark/epan/dissectors/packet-mtp3.c:767:3 #39 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8 #40 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9 #41 0xaefb1b in call_dissector_only wireshark/epan/packet.c:2662:8 #42 0xae09f3 in call_dissector_with_data wireshark/epan/packet.c:2675:8 #43 0xaefba8 in call_dissector wireshark/epan/packet.c:2692:9 #44 0x2da26b4 in dissect_protocol_data_1_parameter wireshark/epan/dissectors/packet-m2ua.c:507:3 #45 0x2da11b2 in dissect_parameter wireshark/epan/dissectors/packet-m2ua.c:952:5 #46 0x2da006b in dissect_parameters wireshark/epan/dissectors/packet-m2ua.c:1026:5 #47 0x2d9fb58 in dissect_message wireshark/epan/dissectors/packet-m2ua.c:1041:3 #48 0x2d9fa96 in dissect_m2ua wireshark/epan/dissectors/packet-m2ua.c:1058:3 #49 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8 #50 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9 #51 0xae4e1d in dissector_try_uint_new wireshark/epan/packet.c:1148:9 #52 0x39012a2 in dissect_payload wireshark/epan/dissectors/packet-sctp.c:2517:9 #53 0x38f7d37 in dissect_data_chunk wireshark/epan/dissectors/packet-sctp.c:3443:16 #54 0x38f0ac8 in dissect_sctp_chunk wireshark/epan/dissectors/packet-sctp.c:4360:14 #55 0x38ed8e6 in dissect_sctp_chunks wireshark/epan/dissectors/packet-sctp.c:4515:9 #56 0x38eb79f in dissect_sctp_packet wireshark/epan/dissectors/packet-sctp.c:4678:3 #57 0x38e95d5 in dissect_sctp wireshark/epan/dissectors/packet-sctp.c:4732:3 #58 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8 #59 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9 #60 0xae4e1d in dissector_try_uint_new wireshark/epan/packet.c:1148:9 #61 0x29c5318 in ip_try_dissect wireshark/epan/dissectors/packet-ip.c:2001:7 #62 0x29d0521 in dissect_ip_v4 wireshark/epan/dissectors/packet-ip.c:2485:10 #63 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8 #64 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9 #65 0xae4e1d in dissector_try_uint_new wireshark/epan/packet.c:1148:9 #66 0xae5a38 in dissector_try_uint wireshark/epan/packet.c:1174:9 #67 0x24e0824 in dissect_ethertype wireshark/epan/dissectors/packet-ethertype.c:307:21 #68 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8 #69 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9 #70 0xaefb1b in call_dissector_only wireshark/epan/packet.c:2662:8 #71 0xae09f3 in call_dissector_with_data wireshark/epan/packet.c:2675:8 #72 0x24dc752 in dissect_eth_common wireshark/epan/dissectors/packet-eth.c:545:5 #73 0x24d499a in dissect_eth_maybefcs wireshark/epan/dissectors/packet-eth.c:828:5 #74 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8 #75 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9 #76 0xae4e1d in dissector_try_uint_new wireshark/epan/packet.c:1148:9 #77 0x25dca12 in dissect_frame wireshark/epan/dissectors/packet-frame.c:500:11 #78 0xaf3794 in call_dissector_through_handle wireshark/epan/packet.c:616:8 #79 0xae5692 in call_dissector_work wireshark/epan/packet.c:691:9 #80 0xaefb1b in call_dissector_only wireshark/epan/packet.c:2662:8 #81 0xae09f3 in call_dissector_with_data wireshark/epan/packet.c:2675:8 #82 0xadffde in dissect_record wireshark/epan/packet.c:501:3 #83 0xab6d0d in epan_dissect_run_with_taps wireshark/epan/epan.c:373:2 #84 0x53c91b in process_packet wireshark/tshark.c:3728:5 #85 0x535d90 in load_cap_file wireshark/tshark.c:3484:11 #86 0x52c1df in main wireshark/tshark.c:2197:13 0x000005676c18 is located 8 bytes to the left of global variable '' defined in '../../asn1/ansi_tcap/ansi_tcap.cnf:131:43' (0x5676c20) of size 15 '' is ascii string 'queryWithPerm ' 0x000005676c18 is located 24 bytes to the right of global variable 'T_paramSet_set' defined in '../../asn1/ansi_tcap/ansi_tcap.cnf:183:29' (0x5676be0) of size 32 SUMMARY: AddressSanitizer: global-buffer-overflow wireshark/epan/dissectors/packet-ber.c:2588:64 in dissect_ber_set Shadow bytes around the buggy address: 0x000080ac6d30: 00 00 00 00 f9 f9 f9 f9 00 00 00 00 00 00 00 00 0x000080ac6d40: 00 00 00 00 00 00 00 f9 f9 f9 f9 f9 00 00 00 00 0x000080ac6d50: 00 00 00 00 00 00 00 00 00 00 00 00 f9 f9 f9 f9 0x000080ac6d60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f9 0x000080ac6d70: f9 f9 f9 f9 00 00 00 00 f9 f9 f9 f9 00 00 00 00 =>0x000080ac6d80: f9 f9 f9[f9]00 07 f9 f9 f9 f9 f9 f9 00 00 00 00 0x000080ac6d90: 00 00 00 00 00 00 00 00 00 00 00 00 f9 f9 f9 f9 0x000080ac6da0: 00 00 02 f9 f9 f9 f9 f9 00 02 f9 f9 f9 f9 f9 f9 0x000080ac6db0: 00 00 06 f9 f9 f9 f9 f9 00 00 00 01 f9 f9 f9 f9 0x000080ac6dc0: 07 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00 0x000080ac6dd0: 00 00 00 00 00 00 00 00 f9 f9 f9 f9 00 00 00 00 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 ==7855==ABORTING --- cut --- The crash was reported at https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=11796. Attached are three files which trigger the crash. Proof of Concept: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39484.zip