Source: https://code.google.com/p/google-security-research/issues/detail?id=650
The following crash due to a heap-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 ---
==9819==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x603000027b3c at pc 0x00000087416b bp 0x7fff95547770 sp 0x7fff95547768
WRITE of size 1 at 0x603000027b3c thread T0
#0 0x87416a in iseries_parse_packet wireshark/wiretap/iseries.c:820:27
#1 0x870589 in iseries_read wireshark/wiretap/iseries.c:382:10
#2 0x9d64c2 in wtap_read wireshark/wiretap/wtap.c:1314:7
#3 0x535c1a in load_cap_file wireshark/tshark.c:3479:12
#4 0x52c1df in main wireshark/tshark.c:2197:13
0x603000027b3c is located 3 bytes to the right of 25-byte region [0x603000027b20,0x603000027b39)
allocated by thread T0 here:
#0 0x4d6ff8 in __interceptor_malloc llvm/projects/compiler-rt/lib/asan/asan_malloc_linux.cc:40
#1 0x7ff6f1a34610 in g_malloc (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x4e610)
#2 0x870589 in iseries_read wireshark/wiretap/iseries.c:382:10
#3 0x9d64c2 in wtap_read wireshark/wiretap/wtap.c:1314:7
#4 0x535c1a in load_cap_file wireshark/tshark.c:3479:12
#5 0x52c1df in main wireshark/tshark.c:2197:13
SUMMARY: AddressSanitizer: heap-buffer-overflow wireshark/wiretap/iseries.c:820:27 in iseries_parse_packet
Shadow bytes around the buggy address:
0x0c067fffcf10: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c067fffcf20: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c067fffcf30: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c067fffcf40: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c067fffcf50: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c067fffcf60: fa fa fa fa 00 00 00[01]fa fa 00 00 00 00 fa fa
0x0c067fffcf70: 00 00 00 00 fa fa 00 00 00 00 fa fa 00 00 00 00
0x0c067fffcf80: fa fa 00 00 00 00 fa fa 00 00 00 00 fa fa 00 00
0x0c067fffcf90: 00 00 fa fa 00 00 00 00 fa fa 00 00 00 00 fa fa
0x0c067fffcfa0: 00 00 00 00 fa fa 00 00 00 00 fa fa 00 00 00 00
0x0c067fffcfb0: fa fa 00 00 00 00 fa fa 00 00 00 00 fa fa 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
==9819==ABORTING
--- cut ---
The crash was reported at https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=11798. Attached is a file which triggers the crash.
Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/38992.zip
