Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=802 The following crash due to a stack-based buffer overflow 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 --- ==27389==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7fff6e9e9a68 at pc 0x7fa9c4c2d7a3 bp 0x7fff6e9e96b0 sp 0x7fff6e9e96a8 WRITE of size 8 at 0x7fff6e9e9a68 thread T0 #0 0x7fa9c4c2d7a2 in dissect_2008_16_security_4 wireshark/epan/dissectors/packet-dof.c:2662:32 #1 0x7fa9c4c2e3f6 in dof_dissect_pdu wireshark/epan/dissectors/packet-dof.c:12619:16 #2 0x7fa9c4c2ce35 in dof_dissect_pdu_as_field wireshark/epan/dissectors/packet-dof.c:12613:20 #3 0x7fa9c4c2a7ed in dissect_sgmp wireshark/epan/dissectors/packet-dof.c:8929:26 #4 0x7fa9c407e911 in call_dissector_through_handle wireshark/epan/packet.c:656:8 #5 0x7fa9c407057a in call_dissector_work wireshark/epan/packet.c:731:9 #6 0x7fa9c406fd4d in dissector_try_uint_new wireshark/epan/packet.c:1190:9 #7 0x7fa9c4c68aca in dissect_app_common wireshark/epan/dissectors/packet-dof.c:5405:13 #8 0x7fa9c4c658b6 in dissect_dpp_2 wireshark/epan/dissectors/packet-dof.c:7370:27 #9 0x7fa9c407e911 in call_dissector_through_handle wireshark/epan/packet.c:656:8 #10 0x7fa9c407057a in call_dissector_work wireshark/epan/packet.c:731:9 #11 0x7fa9c406fd4d in dissector_try_uint_new wireshark/epan/packet.c:1190:9 #12 0x7fa9c4c3a7a2 in dof_dissect_dpp_common wireshark/epan/dissectors/packet-dof.c:5490:13 #13 0x7fa9c4c5d5c0 in dissect_dnp_1 wireshark/epan/dissectors/packet-dof.c:6676:23 #14 0x7fa9c407e911 in call_dissector_through_handle wireshark/epan/packet.c:656:8 #15 0x7fa9c407057a in call_dissector_work wireshark/epan/packet.c:731:9 #16 0x7fa9c406fd4d in dissector_try_uint_new wireshark/epan/packet.c:1190:9 #17 0x7fa9c4c39598 in dof_dissect_dnp_common wireshark/epan/dissectors/packet-dof.c:5528:9 #18 0x7fa9c4c390a0 in dissect_dof_common wireshark/epan/dissectors/packet-dof.c:5627:5 #19 0x7fa9c4c59e5c in dissect_dof_udp wireshark/epan/dissectors/packet-dof.c:5864:12 #20 0x7fa9c407e911 in call_dissector_through_handle wireshark/epan/packet.c:656:8 #21 0x7fa9c407057a in call_dissector_work wireshark/epan/packet.c:731:9 #22 0x7fa9c406fd4d in dissector_try_uint_new wireshark/epan/packet.c:1190:9 #23 0x7fa9c40708f4 in dissector_try_uint wireshark/epan/packet.c:1216:9 #24 0x7fa9c62dddf0 in decode_udp_ports wireshark/epan/dissectors/packet-udp.c:585:7 #25 0x7fa9c62ecd90 in dissect wireshark/epan/dissectors/packet-udp.c:1080:5 #26 0x7fa9c62e0ae0 in dissect_udp wireshark/epan/dissectors/packet-udp.c:1086:3 #27 0x7fa9c407e911 in call_dissector_through_handle wireshark/epan/packet.c:656:8 #28 0x7fa9c407057a in call_dissector_work wireshark/epan/packet.c:731:9 #29 0x7fa9c406fd4d in dissector_try_uint_new wireshark/epan/packet.c:1190:9 #30 0x7fa9c52a333b in ip_try_dissect wireshark/epan/dissectors/packet-ip.c:1977:7 #31 0x7fa9c5312dba in dissect_ipv6 wireshark/epan/dissectors/packet-ipv6.c:2399:14 #32 0x7fa9c407e911 in call_dissector_through_handle wireshark/epan/packet.c:656:8 #33 0x7fa9c407057a in call_dissector_work wireshark/epan/packet.c:731:9 #34 0x7fa9c406fd4d in dissector_try_uint_new wireshark/epan/packet.c:1190:9 #35 0x7fa9c40708f4 in dissector_try_uint wireshark/epan/packet.c:1216:9 #36 0x7fa9c5938ee2 in dissect_null wireshark/epan/dissectors/packet-null.c:457:12 #37 0x7fa9c407e911 in call_dissector_through_handle wireshark/epan/packet.c:656:8 #38 0x7fa9c407057a in call_dissector_work wireshark/epan/packet.c:731:9 #39 0x7fa9c406fd4d in dissector_try_uint_new wireshark/epan/packet.c:1190:9 #40 0x7fa9c4e81105 in dissect_frame wireshark/epan/dissectors/packet-frame.c:492:11 #41 0x7fa9c407e911 in call_dissector_through_handle wireshark/epan/packet.c:656:8 #42 0x7fa9c407057a in call_dissector_work wireshark/epan/packet.c:731:9 #43 0x7fa9c407aa1e in call_dissector_only wireshark/epan/packet.c:2764:8 #44 0x7fa9c406b8ff in call_dissector_with_data wireshark/epan/packet.c:2777:8 #45 0x7fa9c406acd4 in dissect_record wireshark/epan/packet.c:539:3 #46 0x7fa9c401ddb9 in epan_dissect_run_with_taps wireshark/epan/epan.c:376:2 #47 0x52ef3f in process_packet wireshark/tshark.c:3727:5 #48 0x52830c in load_cap_file wireshark/tshark.c:3483:11 #49 0x51e67c in main wireshark/tshark.c:2192:13 Address 0x7fff6e9e9a68 is located in stack of thread T0 at offset 168 in frame #0 0x7fa9c4c2945f in dissect_sgmp wireshark/epan/dissectors/packet-dof.c:8718 This frame has 8 object(s): [32, 34) 'app' [48, 52) 'app_len' [64, 66) 'version' [80, 84) 'length' [96, 128) 'key' [160, 168) 'response' <== Memory access at offset 168 overflows this variable [192, 194) 'version129' [208, 212) 'length130' HINT: this may be a false positive if your program uses some custom stack unwind mechanism or swapcontext (longjmp and C++ exceptions *are* supported) SUMMARY: AddressSanitizer: stack-buffer-overflow wireshark/epan/dissectors/packet-dof.c:2662:32 in dissect_2008_16_security_4 Shadow bytes around the buggy address: 0x10006dd352f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x10006dd35300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x10006dd35310: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x10006dd35320: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x10006dd35330: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 02 f2 04 f2 =>0x10006dd35340: 02 f2 04 f2 00 00 00 00 f2 f2 f2 f2 00[f2]f2 f2 0x10006dd35350: 02 f2 04 f3 00 00 00 00 00 00 00 00 00 00 00 00 0x10006dd35360: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x10006dd35370: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x10006dd35380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x10006dd35390: 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 ==27389==ABORTING --- cut --- The crash was reported at https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=12351. Attached are three files which trigger the crash. Proof of Concept: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39748.zip
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