Source: https://code.google.com/p/google-security-research/issues/detail?id=695 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 --- ==24377==ERROR: AddressSanitizer: global-buffer-overflow on address 0x7f7a3ce4efe0 at pc 0x7f7a39a5a121 bp 0x7ffe1fcb92e0 sp 0x7ffe1fcb92d8 READ of size 4 at 0x7f7a3ce4efe0 thread T0 #0 0x7f7a39a5a120 in hiqnet_display_data wireshark/epan/dissectors/packet-hiqnet.c:523:15 #1 0x7f7a39a59354 in dissect_hiqnet_pdu wireshark/epan/dissectors/packet-hiqnet.c:906:34 #2 0x7f7a39a560b7 in dissect_hiqnet_udp wireshark/epan/dissectors/packet-hiqnet.c:1031:9 #3 0x7f7a38ab14a1 in call_dissector_through_handle wireshark/epan/packet.c:619:8 #4 0x7f7a38aa3e2a in call_dissector_work wireshark/epan/packet.c:694:9 #5 0x7f7a38aa35fd in dissector_try_uint_new wireshark/epan/packet.c:1151:9 #6 0x7f7a38aa41a4 in dissector_try_uint wireshark/epan/packet.c:1177:9 #7 0x7f7a3abc065d in decode_udp_ports wireshark/epan/dissectors/packet-udp.c:536:7 #8 0x7f7a3abce912 in dissect wireshark/epan/dissectors/packet-udp.c:1031:5 #9 0x7f7a3abc31a0 in dissect_udplite wireshark/epan/dissectors/packet-udp.c:1044:3 #10 0x7f7a38ab14a1 in call_dissector_through_handle wireshark/epan/packet.c:619:8 #11 0x7f7a38aa3e2a in call_dissector_work wireshark/epan/packet.c:694:9 #12 0x7f7a38aa35fd in dissector_try_uint_new wireshark/epan/packet.c:1151:9 #13 0x7f7a39beae0b in ip_try_dissect wireshark/epan/dissectors/packet-ip.c:1976:7 #14 0x7f7a39bf5a21 in dissect_ip_v4 wireshark/epan/dissectors/packet-ip.c:2468:10 #15 0x7f7a39beb569 in dissect_ip wireshark/epan/dissectors/packet-ip.c:2491:5 #16 0x7f7a38ab14a1 in call_dissector_through_handle wireshark/epan/packet.c:619:8 #17 0x7f7a38aa3e2a in call_dissector_work wireshark/epan/packet.c:694:9 #18 0x7f7a38aa35fd in dissector_try_uint_new wireshark/epan/packet.c:1151:9 #19 0x7f7a38aa41a4 in dissector_try_uint wireshark/epan/packet.c:1177:9 #20 0x7f7a3a3d1830 in dissect_ppp_common wireshark/epan/dissectors/packet-ppp.c:4346:10 #21 0x7f7a3a3d0fec in dissect_ppp_hdlc_common wireshark/epan/dissectors/packet-ppp.c:5339:5 #22 0x7f7a3a3c92a5 in dissect_ppp_hdlc wireshark/epan/dissectors/packet-ppp.c:5380:5 #23 0x7f7a38ab14a1 in call_dissector_through_handle wireshark/epan/packet.c:619:8 #24 0x7f7a38aa3e2a in call_dissector_work wireshark/epan/packet.c:694:9 #25 0x7f7a38aa35fd in dissector_try_uint_new wireshark/epan/packet.c:1151:9 #26 0x7f7a397e00d3 in dissect_frame wireshark/epan/dissectors/packet-frame.c:491:11 #27 0x7f7a38ab14a1 in call_dissector_through_handle wireshark/epan/packet.c:619:8 #28 0x7f7a38aa3e2a in call_dissector_work wireshark/epan/packet.c:694:9 #29 0x7f7a38aad96e in call_dissector_only wireshark/epan/packet.c:2665:8 #30 0x7f7a38a9f3df in call_dissector_with_data wireshark/epan/packet.c:2678:8 #31 0x7f7a38a9ea2b in dissect_record wireshark/epan/packet.c:502:3 #32 0x7f7a38a4f9b9 in epan_dissect_run_with_taps wireshark/epan/epan.c:376:2 #33 0x52856b in process_packet wireshark/tshark.c:3728:5 #34 0x5219e0 in load_cap_file wireshark/tshark.c:3484:11 #35 0x517e2c in main wireshark/tshark.c:2197:13 0x7f7a3ce4efe0 is located 32 bytes to the left of global variable '' defined in 'packet-hiqnet.c' (0x7f7a3ce4f000) of size 16 '' is ascii string 'packet-hiqnet.c' 0x7f7a3ce4efe0 is located 16 bytes to the right of global variable 'hiqnet_datasize_per_type' defined in 'packet-hiqnet.c:282:19' (0x7f7a3ce4efa0) of size 48 SUMMARY: AddressSanitizer: global-buffer-overflow wireshark/epan/dissectors/packet-hiqnet.c:523:15 in hiqnet_display_data Shadow bytes around the buggy address: 0x0fefc79c1da0: f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9 0x0fefc79c1db0: f9 f9 f9 f9 00 02 f9 f9 f9 f9 f9 f9 00 05 f9 f9 0x0fefc79c1dc0: f9 f9 f9 f9 00 02 f9 f9 f9 f9 f9 f9 00 00 f9 f9 0x0fefc79c1dd0: f9 f9 f9 f9 06 f9 f9 f9 f9 f9 f9 f9 07 f9 f9 f9 0x0fefc79c1de0: f9 f9 f9 f9 00 02 f9 f9 f9 f9 f9 f9 00 04 f9 f9 =>0x0fefc79c1df0: f9 f9 f9 f9 00 00 00 00 00 00 f9 f9[f9]f9 f9 f9 0x0fefc79c1e00: 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00 0x0fefc79c1e10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0fefc79c1e20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0fefc79c1e30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0fefc79c1e40: 00 00 00 00 00 00 00 00 00 00 00 00 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 --- cut --- The crash was reported at https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=11983. Attached are three files which trigger the crash. Proof of Concept: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39325.zip