Package: dcraw Version: 9.27-1+b1 Severity: normal Dear Maintainer,
Running dcraw-9.27 with the attached input file raises a crash caused by
stack-buffer-overflow in quicktake_100_load_raw().
First, below is the GDB log that shows a crash from dcraw-9.27 binary
downloaded with 'apt-get'.
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jason@debian-amd64-stretch:~/dcraw-crashes$ gdb -q dcraw
Reading symbols from dcraw...(no debugging symbols found)...done.
(gdb) run crash-2_00000011
Starting program: /usr/bin/dcraw crash-2_00000011
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
crash-2_00000011: Unexpected end of file
Program received signal SIGSEGV, Segmentation fault.
0x000055555555dd08 in ?? ()
(gdb) x/i $rip
=> 0x55555555dd08: mov %al,(%r15)
(gdb) info reg r15
r15 0x7ffffffff000 140737488351232
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Since the downloaded binary did not have any symbol information, we
downloaded its source code and compiled it with AddressSanitizer.
AddressSanitizer reported a stack-based buffer overflow in
quicktake_100_load_raw(), as below.
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=================================================================
==5011==ERROR: AddressSanitizer: stack-buffer-overflow on address
0x7fffffffd931 at pc 0x000000516332 bp 0x7ffffffb1410 sp 0x7ffffffb1408
WRITE of size 1 at 0x7fffffffd931 thread T0
#0 0x516331 in quicktake_100_load_raw
/home/jason/packages-sanitize/dcraw-9.27/dcraw.c:2145:23
#1 0x5bc6e6 in main
/home/jason/packages-sanitize/dcraw-9.27/dcraw.c:10150:10
#2 0x7ffff6a3582f in __libc_start_main
/build/glibc-Cl5G7W/glibc-2.23/csu/../csu/libc-start.c:291
#3 0x4196c8 in _start (/home/jason/Chatkey/replay_box/dcraw+0x4196c8)
Address 0x7fffffffd931 is located in stack of thread T0 at offset 311729 in
frame
#0 0x515d9f in quicktake_100_load_raw
/home/jason/packages-sanitize/dcraw-9.27/dcraw.c:2116
This frame has 1 object(s):
[32, 311728) 'pixel' <== Memory access at offset 311729 overflows this
variable
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
/home/jason/packages-sanitize/dcraw-9.27/dcraw.c:2145:23 in
quicktake_100_load_raw
Shadow bytes around the buggy address:
0x10007fff7ad0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7ae0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7af0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7b10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x10007fff7b20: 00 00 00 00 00 00[f3]f3 f3 f3 f3 f3 f3 f3 f3 f3
0x10007fff7b30: f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3 f3
0x10007fff7b40: f3 f3 f3 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00
0x10007fff7b50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7b60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x10007fff7b70: 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
==5011==ABORTING
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-- System Information:
Debian Release: 9.1
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.9.0-3-amd64 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=locale: Cannot set
LC_ALL to default locale: No such file or directory
UTF-8), LANGUAGE=en_US:en (charmap=locale: Cannot set LC_ALL to default
locale: No such file or directory
UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages dcraw depends on:
ii libc6 2.24-11+deb9u3
ii libjpeg62-turbo 1:1.5.1-2
ii liblcms2-2 2.8-4
dcraw recommends no packages.
Versions of packages dcraw suggests:
pn gphoto2 <none>
ii netpbm 2:10.0-15.3+b2
-- debconf information excluded
crash-2_00000011
Description: Binary data
