1470729 – There is a heap overflow in the software exiv2.

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Bug 1470729 - There is a heap overflow in the software exiv2.

Summary: There is a heap overflow in the software exiv2.

Keywords:
Status:	CLOSED ERRATA
Alias:	None
Product:	Red Hat Enterprise Linux 7
Classification:	Red Hat
Component:	exiv2
Sub Component:
Version:	7.5-Alt
Hardware:	x86_64
OS:	Linux
Priority:	unspecified
Severity:	urgent
Target Milestone:	rc
Target Release:	---
Assignee:	Jan Grulich
QA Contact:	Desktop QE
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:	CVE-2017-11336
TreeView+	depends on / blocked

Reported:	2017-07-13 14:19 UTC by owl337
Modified:	2019-08-06 12:47 UTC (History)
CC List:	2 users (show)
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed:	2019-08-06 12:46:47 UTC
Target Upstream Version:
Embargoed:

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

Links
System	ID	Private	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2019:2101	0	None	None	None	2019-08-06 12:47:09 UTC

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   and chaoz.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 Čermák 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.

Comment 10 errata-xmlrpc 2019-08-06 12:46:47 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2019:2101

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