[Secure-testing-team] Bug#889272: jhead: heap buffer overflow while running jhead

[Joonun Jang]

Package: jhead
Version: 1:3.00-5
Severity: important
Tags: security

heap buffer overflow running jhead with "poc" option

Running 'jhead poc' with the attached file raises heap buffer overflow
which may allow a remote attacker to cause unspecified impact including denial-of-service attack
I expected the program to terminate without segfault, but the program crashes as follow

june at june:~/temp/report/jhead/00013658$ ../../binary/jhead-3.00/jhead ./poc
=================================================================
==10024==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60200000efff at pc 0x555555570af5 bp 0x7ffffffef920 sp 0x7ffffffef918
READ of size 1 at 0x60200000efff thread T0
    #0 0x555555570af4 in Get32s exif.c:337
    #1 0x555555570af4 in Get32u exif.c:365
    #2 0x555555570af4 in process_EXIF exif.c:1021
    #3 0x555555568506 in ReadJpegSections jpgfile.c:287
    #4 0x555555568a05 in ReadJpegSections jpgfile.c:126
    #5 0x555555568a05 in ReadJpegFile jpgfile.c:375
    #6 0x555555564af3 in ProcessFile jhead.c:896
    #7 0x555555562608 in main jhead.c:1729
    #8 0x7ffff67bb2b0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202b0)
    #9 0x555555563a19 in _start (/home/june/temp/report/binary/jhead-3.00/jhead+0xfa19)

0x60200000efff is located 0 bytes to the right of 15-byte region [0x60200000eff0,0x60200000efff)
allocated by thread T0 here:
    #0 0x7ffff6effd28 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.3+0xc1d28)
    #1 0x555555567b36 in ReadJpegSections jpgfile.c:173

SUMMARY: AddressSanitizer: heap-buffer-overflow exif.c:337 in Get32s
Shadow bytes around the buggy address:
  0x0c047fff9da0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9db0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9dc0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9dd0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9de0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c047fff9df0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa 00[07]
  0x0c047fff9e00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9e10: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9e20: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9e30: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9e40: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
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
==10024==ABORTING

This bug was found with a fuzzer developed by 'SoftSec' group at KAIST

-- System Information:
Debian Release: 9.3
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'unstable'), (500, 'testing'), (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=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages jhead depends on:
ii  libc6                2.24-11+deb9u1
ii  libjpeg-turbo-progs  1:1.5.1-2

jhead recommends no packages.

Versions of packages jhead suggests:
ii  imagemagick                      8:6.9.7.4+dfsg-11+deb9u4
ii  imagemagick-6.q16 [imagemagick]  8:6.9.7.4+dfsg-11+deb9u4

-- no debconf information
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