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Bug 603081 - libtiff: OOB read in putcontig8bitYCbCr11tile
Summary: libtiff: OOB read in putcontig8bitYCbCr11tile
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: libtiff
Version: 6.0
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Tom Lane
QA Contact: Martin Cermak
URL:
Whiteboard:
Depends On:
Blocks: CVE-2010-2483
TreeView+ depends on / blocked
 
Reported: 2010-06-11 13:45 UTC by Tomas Hoger
Modified: 2019-06-11 11:17 UTC (History)
6 users (show)

Fixed In Version: libtiff-3.9.4-1.el6
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2010-11-10 21:04:39 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
Reproducer (7.62 KB, application/x-gzip)
2010-06-11 13:50 UTC, Tomas Hoger 		no flags Details
patch (449 bytes, patch)
2010-06-11 16:17 UTC, Tom Lane 		no flags Details | Diff
View All


Links
System ID Private Priority Status Summary Last Updated
Launchpad 591605 0 None None None Never

Description Tomas Hoger 2010-06-11 13:45:32 UTC 
Description of problem:
Originally reported by Sauli Pahlman in Launchpad:
  https://bugs.launchpad.net/bugs/591605

Attached tif file triggers out-of-bounds read in putcontig8bitYCbCr11tile.

pp points to buffer allocated in gtTileContig with the size of TIFFTileSize(tif).  For this file, it's 80640.  putcontig8bitYCbCr11tile tries to read w*h*3 bytes out of it (234*213*3 == 149526).

Version-Release number of selected component (if applicable):
libtiff-3.9.2-3.el6.i686

Additional info:

Program received signal SIGSEGV, Segmentation fault.
0x008a7e15 in putcontig8bitYCbCr11tile (img=<value optimized out>, cp=0xb7fed420, x=<value optimized out>, 
    y=<value optimized out>, w=<value optimized out>, h=<value optimized out>, fromskew=<value optimized out>, 
    toskew=<value optimized out>, pp=0x806d000 <Address 0x806d000 out of bounds>) at tif_getimage.c:1986
1986				YCbCrtoRGB(*cp++, pp[0]);

(gdb) bt
#0  0x008a7e15 in putcontig8bitYCbCr11tile (img=<value optimized out>, cp=0xb7fed420, x=<value optimized out>, 
    y=<value optimized out>, w=<value optimized out>, h=<value optimized out>, fromskew=<value optimized out>, 
    toskew=<value optimized out>, pp=0x806d000 <Address 0x806d000 out of bounds>) at tif_getimage.c:1986
#1  0x008aa52e in gtTileContig (img=<value optimized out>, raster=<value optimized out>, w=<value optimized out>, 
    h=<value optimized out>) at tif_getimage.c:629
#2  0x008a7103 in TIFFRGBAImageGet (img=<value optimized out>, raster=<value optimized out>, w=<value optimized out>, 
    h=<value optimized out>) at tif_getimage.c:461
#3  0x008ac750 in TIFFReadRGBAImageOriented (tif=<value optimized out>, rwidth=<value optimized out>, 
    rheight=<value optimized out>, raster=<value optimized out>, orientation=<value optimized out>, 
    stop=<value optimized out>) at tif_getimage.c:480
#4  0x080495c8 in cvt_whole_image (out=<value optimized out>, in=<value optimized out>) at tiff2rgba.c:401
#5  tiffcvt (out=<value optimized out>, in=<value optimized out>) at tiff2rgba.c:519
#6  main (out=<value optimized out>, in=<value optimized out>) at tiff2rgba.c:115

This may be related to bug #583081, however patches linked there do not address this problem.
Comment 1 Tomas Hoger 2010-06-11 13:50:53 UTC 
Created attachment 423278 [details]
Reproducer

Test file from: https://bugs.launchpad.net/bugs/591605

Adding as private for now, while Launchpad bug is private.
Comment 4 RHEL Program Management 2010-06-11 14:13:06 UTC 
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release.  Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release.  This request is not yet committed for
inclusion.
Comment 6 Tom Lane 2010-06-11 16:17:19 UTC 
Created attachment 423329 [details]
patch

Specifically, what we need is this patch, which duplicates into PickContigCase() a safety check that already existed in PickSeparateCase().
Comment 7 Tom Lane 2010-06-11 16:22:56 UTC 
Comment #0 fails to spell out a test case ... try this:

tiff2rgba lp591605-sample.tif /dev/null
Comment 8 Tomas Hoger 2010-06-16 18:20:36 UTC 
Opening bug, original launchpad report is public now.
Comment 9 Tom Lane 2010-06-16 22:30:22 UTC 
Filed upstream at http://bugzilla.maptools.org/show_bug.cgi?id=2216
Comment 11 Vincent Danen 2010-07-06 14:52:19 UTC 
This issue was assigned CVE-2010-2483
Comment 14 Martin Cermak 2010-09-08 14:10:02 UTC 
=> VERIFIED
Comment 15 releng-rhel@redhat.com 2010-11-10 21:04:39 UTC 
Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.
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