Source: https://code.google.com/p/google-security-research/issues/detail?id=658
The following crash due to a heap-based 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"):
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==6473==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x61b00001335c at pc 0x7f391e585d1e bp 0x7ffc0ff625c0 sp 0x7ffc0ff625b8
READ of size 1 at 0x61b00001335c thread T0
#0 0x7f391e585d1d in infer_pkt_encap wireshark/wiretap/ngsniffer.c:1767:27
#1 0x7f391e582ac7 in fix_pseudo_header wireshark/wiretap/ngsniffer.c:1805:11
#2 0x7f391e57d07e in ngsniffer_process_record wireshark/wiretap/ngsniffer.c:1299:20
#3 0x7f391e576418 in ngsniffer_read wireshark/wiretap/ngsniffer.c:1034:9
#4 0x7f391e62429b in wtap_read wireshark/wiretap/wtap.c:1309:7
#5 0x51f7ea in load_cap_file wireshark/tshark.c:3479:12
#6 0x515daf in main wireshark/tshark.c:2197:13
0x61b00001335c is located 0 bytes to the right of 1500-byte region [0x61b000012d80,0x61b00001335c)
allocated by thread T0 here:
#0 0x4c0bc8 in malloc llvm/projects/compiler-rt/lib/asan/asan_malloc_linux.cc:40
#1 0x7f390a251610 in g_malloc (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x4e610)
#2 0x7f391e48d0e5 in wtap_open_offline wireshark/wiretap/file_access.c:1105:2
#3 0x51bd1d in cf_open wireshark/tshark.c:4195:9
#4 0x51584e in main wireshark/tshark.c:2188:9
SUMMARY: AddressSanitizer: heap-buffer-overflow wireshark/wiretap/ngsniffer.c:1767:27 in infer_pkt_encap
Shadow bytes around the buggy address:
0x0c367fffa610: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c367fffa620: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c367fffa630: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c367fffa640: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c367fffa650: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c367fffa660: 00 00 00 00 00 00 00 00 00 00 00[04]fa fa fa fa
0x0c367fffa670: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c367fffa680: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c367fffa690: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c367fffa6a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c367fffa6b0: 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
==6473==ABORTING
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The crash was reported at https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=11827. Attached are two files which trigger the crash.
Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39076.zip
