Description
Hi,
I'm hitting this bug in the latest version 5.2.0 of tidy and also the master
./tidy
==13070==ERROR: AddressSanitizer: global-buffer-overflow on address 0x082b12e6 at pc 0xf7177cf6 bp 0xffc16078 sp 0xffc15c48
READ of size 7 at 0x082b12e6 thread T0
#0 0xf7177cf5 (/usr/lib/i386-linux-gnu/libasan.so.3+0x32cf5)
#1 0x80adab9 in tidySetLanguage /home/bob/VulnResearch/misc/xml/tidy-html5-5.2.0/src/language.c:705
#2 0x805339b in main /home/bob/VulnResearch/misc/xml/tidy-html5-5.2.0/console/tidy.c:1539
#3 0xf6fa7636 in __libc_start_main (/lib/i386-linux-gnu/libc.so.6+0x18636)
#4 0x8058553 (/home/bob/VulnResearch/misc/xml/tidy-html5-5.2.0/build/cmake/tidy+0x8058553)0x082b12e6 is located 58 bytes to the left of global variable 'tidyLanguages' defined in '/home/bob/VulnResearch/misc/xml/tidy-html5-5.2.0/src/language.c:38:26' (0x82b1320) of size 36
0x082b12e6 is located 0 bytes to the right of global variable 'result' defined in '/home/bob/VulnResearch/misc/xml/tidy-html5-5.2.0/src/language.c:603:17' (0x82b12e0) of size 6
SUMMARY: AddressSanitizer: global-buffer-overflow (/usr/lib/i386-linux-gnu/libasan.so.3+0x32cf5)
Shadow bytes around the buggy address:
0x21056200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x21056210: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x21056220: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x21056230: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x21056240: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x21056250: 00 00 00 00 00 00 00 00 00 00 00 00[06]f9 f9 f9
0x21056260: f9 f9 f9 f9 00 00 00 00 04 f9 f9 f9 f9 f9 f9 f9
0x21056270: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x21056280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x21056290: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x210562a0: 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
==13070==ABORTING
unfortunately I'm not familiar with the project, so I didn't do any analysis, my env is ubuntu 16.04 fully updated
Marco