Bug 1470729 - There is a heap overflow in the software exiv2.
Summary: There is a heap overflow in the software exiv2.
Status: VERIFIED
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: exiv2
Version: 7.5-Alt
Hardware: x86_64
OS: Linux
unspecified
urgent
Target Milestone: rc
: ---
Assignee: Jan Grulich
QA Contact: Desktop QE
URL:
Whiteboard:
Keywords: Security
Depends On:
Blocks: CVE-2017-11336
TreeView+ depends on / blocked
 
Reported: 2017-07-13 14:19 UTC by owl337
Modified: 2019-04-16 12:05 UTC (History)
2 users (show)

(edit)
Clone Of:
(edit)
Last Closed:


Attachments (Terms of Use)
Triggered by "./exiv2 $POC" (114 bytes, application/x-rar)
2017-07-13 14:19 UTC, owl337
no flags Details

Description owl337 2017-07-13 14:19:54 UTC
Created attachment 1297685 [details]
Triggered by  "./exiv2 $POC"

Description of problem:

 There is a heap overflow in the software exiv2.

Version-Release number of selected component (if applicable):

<= latest version

How reproducible:

./exiv2 POC2

Steps to Reproduce:

The output information is as follows:

$./exiv2 POC2

*** Error in `/home/icy/real/exiv2/bin/.libs/lt-exiv2': malloc(): memory corruption: 0x0000000001cc71d0 ***
Aborted

ASAN output information:

$./exiv2 POC2

==96688==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60200000ed9c at pc 0x7fec442f1a42 bp 0x7ffdeed50350 sp 0x7ffdeed50348
READ of size 1 at 0x60200000ed9c thread T0
    #0 0x7fec442f1a41  (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x43ba41)
    #1 0x7fec442f30e0  (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x43d0e0)
    #2 0x7fec44503900  (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x64d900)
    #3 0x7fec444fb5eb  (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x6455eb)
    #4 0x518d8b  (/home/icy/real/exiv2-asan/install/bin/exiv2+0x518d8b)
    #5 0x518488  (/home/icy/real/exiv2-asan/install/bin/exiv2+0x518488)
    #6 0x4e2ebb  (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e2ebb)
    #7 0x7fec43063abf  (/lib/x86_64-linux-gnu/libc.so.6+0x20abf)
    #8 0x43b288  (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43b288)

0x60200000ed9c is located 0 bytes to the right of 12-byte region [0x60200000ed90,0x60200000ed9c)
allocated by thread T0 here:
    #0 0x4e1842  (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e1842)
    #1 0x7fec442eac5f  (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x434c5f)
    #2 0x7fec442f30e0  (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x43d0e0)

Shadow bytes around the buggy address:
  0x0c047fff9d60: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9d70: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9d80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9d90: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9da0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c047fff9db0: fa fa 00[04]fa fa 00 fa fa fa 00 fa fa fa 00 fa
  0x0c047fff9dc0: fa fa 06 fa fa fa 00 04 fa fa 00 04 fa fa 00 04
  0x0c047fff9dd0: fa fa 00 04 fa fa 00 04 fa fa 00 04 fa fa 00 04
  0x0c047fff9de0: fa fa 00 04 fa fa 00 04 fa fa 00 04 fa fa 00 04
  0x0c047fff9df0: fa fa 00 04 fa fa 00 04 fa fa 00 04 fa fa fd fa
  0x0c047fff9e00: 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
==96688==ABORTING

The GDB debugging information is as follows:
(gdb) set args POC32
(gdb) r
...

(gdb) bt
#0  Exiv2::Image::printIFDStructure (this=<optimized out>, io=..., out=..., option=Exiv2::kpsRecursive, start=0, 
    bSwap=<optimized out>, c=<optimized out>, depth=0) at image.cpp:430
#1  0x00007ffff70b90e1 in Exiv2::Image::printTiffStructure (this=0x61300000de80, io=..., out=..., 
    option=Exiv2::kpsRecursive, depth=-1, offset=<optimized out>) at image.cpp:518
#2  0x00007ffff72c9901 in Exiv2::TiffImage::printStructure (this=<optimized out>, out=..., option=<optimized out>, 
    depth=<optimized out>) at tiffimage.cpp:348
#3  0x00007ffff72c15ec in Exiv2::TiffImage::readMetadata (this=<optimized out>) at tiffimage.cpp:191
#4  0x0000000000518d8c in Action::Print::printSummary (this=<optimized out>) at actions.cpp:289
#5  0x0000000000518489 in Action::Print::run (this=0x60400000da50, path=...) at actions.cpp:244
#6  0x00000000004e2ebc in main (argc=<optimized out>, argv=<optimized out>) at exiv2.cpp:170
(gdb) s
Exiv2::Image::byteSwap4 (this=<optimized out>, buf=..., offset=<optimized out>, bSwap=<optimized out>) at image.cpp:269
269	        p[0] = buf.pData_[offset];
(gdb) s
=================================================================
==45031==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60200000ed9c at pc 0x7ffff70b7a42 bp 0x7fffffffbd30 sp 0x7fffffffbd28
READ of size 1 at 0x60200000ed9c thread T0
    #0 0x7ffff70b7a41  (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x43ba41)
    #1 0x7ffff70b90e0  (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x43d0e0)
    #2 0x7ffff72c9900  (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x64d900)
    #3 0x7ffff72c15eb  (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x6455eb)
    #4 0x518d8b  (/home/icy/real/exiv2-asan/install/bin/exiv2+0x518d8b)
    #5 0x518488  (/home/icy/real/exiv2-asan/install/bin/exiv2+0x518488)
    #6 0x4e2ebb  (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e2ebb)
    #7 0x7ffff5e29abf  (/lib/x86_64-linux-gnu/libc.so.6+0x20abf)
    #8 0x43b288  (/home/icy/real/exiv2-asan/install/bin/exiv2+0x43b288)

0x60200000ed9c is located 0 bytes to the right of 12-byte region [0x60200000ed90,0x60200000ed9c)
allocated by thread T0 here:
    #0 0x4e1842  (/home/icy/real/exiv2-asan/install/bin/exiv2+0x4e1842)
    #1 0x7ffff70b0c5f  (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x434c5f)
    #2 0x7ffff70b90e0  (/home/icy/real/exiv2-asan/install/lib/libexiv2.so.26+0x43d0e0)

Shadow bytes around the buggy address:
  0x0c047fff9d60: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9d70: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9d80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9d90: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff9da0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c047fff9db0: fa fa 00[04]fa fa 00 fa fa fa 00 fa fa fa 00 fa
  0x0c047fff9dc0: fa fa 06 fa fa fa 00 04 fa fa 00 04 fa fa 00 04
  0x0c047fff9dd0: fa fa 00 04 fa fa 00 04 fa fa 00 04 fa fa 00 04
  0x0c047fff9de0: fa fa 00 04 fa fa 00 04 fa fa 00 04 fa fa 00 04
  0x0c047fff9df0: fa fa 00 04 fa fa 00 04 fa fa 00 04 fa fa fd fa
  0x0c047fff9e00: 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
==45031==ABORTING
[Inferior 1 (process 45031) exited with code 01]

This vulnerability was triggered in Exiv2::Image::byteSwap4 () at image.cpp:269.

 265     uint32_t Image::byteSwap4(DataBuf& buf,size_t offset,bool bSwap)
 266     {   
 267         uint32_t v;
 268         char*    p = (char*) &v;
 269         p[0] = buf.pData_[offset];
 270         p[1] = buf.pData_[offset+1];
 271         p[2] = buf.pData_[offset+2];
 272         p[3] = buf.pData_[offset+3];
 273         return Image::byteSwap(v,bSwap);
 274     }

Actual results:

crash

Expected results:

crash

Additional info:


This vulnerability is detected by team OWL337, with our custom fuzzer collAFL. Please contact ganshuitao@gmail.com   and chaoz@tsinghua.edu.cn if you need more info about the team, the tool or the vulnerability.

Comment 2 Adam Mariš 2017-07-24 12:41:48 UTC
Please, report this issue to upstream. Thanks!

Comment 3 Raphaël Hertzog 2017-08-31 14:06:42 UTC
Forwarded upstream here: https://github.com/Exiv2/exiv2/issues/49

Comment 4 dan.cermak 2017-10-19 20:58:52 UTC
We have fixed this upstream in the master branch and backported the changes to the 0.26 branch (the testsuite has not made it yet, so make tests is not yet fixed). We are currently working on backporting the fixes further to 0.25.

You can get the fixes by comparing the git HEAD of 0.26 against the tag v0.26.

Comment 6 Jan Grulich 2019-01-28 16:08:18 UTC
Fixed with exiv2-0.27.0-1.el7_6.


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