tiff: CVE-2018-15209

Debian Bug report logs - #905798
tiff: CVE-2018-15209

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: tiff: CVE-2018-15209

Date: Thu, 09 Aug 2018 22:34:36 +0200

Source: tiff
Version: 4.0.9-6
Severity: important
Tags: security upstream
Forwarded: http://bugzilla.maptools.org/show_bug.cgi?id=2808

Hi,

The following vulnerability was published for tiff.

CVE-2018-15209[0]:
| ChopUpSingleUncompressedStrip in tif_dirread.c in LibTIFF 4.0.9 allows
| remote attackers to cause a denial of service (heap-based buffer
| overflow and application crash) or possibly have unspecified other
| impact via a crafted TIFF file, as demonstrated by tiff2pdf.

The issue is demostrable on a 32bit sid system under valgrind as well:

[...]
==2695== Invalid write of size 4
==2695==    at 0x485BEF2: ChopUpSingleUncompressedStrip (tif_dirread.c:5723)
==2695==    by 0x485BEF2: TIFFReadDirectory (tif_dirread.c:4186)
==2695==    by 0x4880257: TIFFClientOpen (tif_open.c:466)
==2695==    by 0x488E632: TIFFFdOpen (tif_unix.c:211)
==2695==    by 0x488E71D: TIFFOpen (tif_unix.c:250)
==2695==    by 0x10965E: main (tiff2pdf.c:753)
==2695==  Address 0x5c11028 is 0 bytes after a block of size 12,058,624 alloc'd
==2695==    at 0x483019B: malloc (vg_replace_malloc.c:298)
==2695==    by 0x483245C: realloc (vg_replace_malloc.c:785)
==2695==    by 0x488E7FB: _TIFFrealloc (tif_unix.c:336)
==2695==    by 0x484EE57: _TIFFCheckRealloc (tif_aux.c:73)
==2695==    by 0x484EEC5: _TIFFCheckMalloc (tif_aux.c:88)
==2695==    by 0x485BE87: ChopUpSingleUncompressedStrip (tif_dirread.c:5701)
==2695==    by 0x485BE87: TIFFReadDirectory (tif_dirread.c:4186)
==2695==    by 0x4880257: TIFFClientOpen (tif_open.c:466)
==2695==    by 0x488E632: TIFFFdOpen (tif_unix.c:211)
==2695==    by 0x488E71D: TIFFOpen (tif_unix.c:250)
==2695==    by 0x10965E: main (tiff2pdf.c:753)
==2695==
==2695== Invalid write of size 4
==2695==    at 0x485BEF5: ChopUpSingleUncompressedStrip (tif_dirread.c:5723)
==2695==    by 0x485BEF5: TIFFReadDirectory (tif_dirread.c:4186)
==2695==    by 0x4880257: TIFFClientOpen (tif_open.c:466)
==2695==    by 0x488E632: TIFFFdOpen (tif_unix.c:211)
==2695==    by 0x488E71D: TIFFOpen (tif_unix.c:250)
==2695==    by 0x10965E: main (tiff2pdf.c:753)
==2695==  Address 0x5c1102c is 4 bytes after a block of size 12,058,624 alloc'd
==2695==    at 0x483019B: malloc (vg_replace_malloc.c:298)
==2695==    by 0x483245C: realloc (vg_replace_malloc.c:785)
==2695==    by 0x488E7FB: _TIFFrealloc (tif_unix.c:336)
==2695==    by 0x484EE57: _TIFFCheckRealloc (tif_aux.c:73)
==2695==    by 0x484EEC5: _TIFFCheckMalloc (tif_aux.c:88)
==2695==    by 0x485BE87: ChopUpSingleUncompressedStrip (tif_dirread.c:5701)
==2695==    by 0x485BE87: TIFFReadDirectory (tif_dirread.c:4186)
==2695==    by 0x4880257: TIFFClientOpen (tif_open.c:466)
==2695==    by 0x488E632: TIFFFdOpen (tif_unix.c:211)
==2695==    by 0x488E71D: TIFFOpen (tif_unix.c:250)
==2695==    by 0x10965E: main (tiff2pdf.c:753)
==2695==
==2695== Invalid write of size 4
==2695==    at 0x485BF17: ChopUpSingleUncompressedStrip (tif_dirread.c:5724)
==2695==    by 0x485BF17: TIFFReadDirectory (tif_dirread.c:4186)
==2695==    by 0x4880257: TIFFClientOpen (tif_open.c:466)
==2695==    by 0x488E632: TIFFFdOpen (tif_unix.c:211)
==2695==    by 0x488E71D: TIFFOpen (tif_unix.c:250)
==2695==    by 0x10965E: main (tiff2pdf.c:753)
==2695==  Address 0x6792028 is 0 bytes after a block of size 12,058,624 alloc'd
==2695==    at 0x483019B: malloc (vg_replace_malloc.c:298)
==2695==    by 0x483245C: realloc (vg_replace_malloc.c:785)
==2695==    by 0x488E7FB: _TIFFrealloc (tif_unix.c:336)
==2695==    by 0x484EE57: _TIFFCheckRealloc (tif_aux.c:73)
==2695==    by 0x484EEC5: _TIFFCheckMalloc (tif_aux.c:88)
==2695==    by 0x485BEA7: ChopUpSingleUncompressedStrip (tif_dirread.c:5703)
==2695==    by 0x485BEA7: TIFFReadDirectory (tif_dirread.c:4186)
==2695==    by 0x4880257: TIFFClientOpen (tif_open.c:466)
==2695==    by 0x488E632: TIFFFdOpen (tif_unix.c:211)
==2695==    by 0x488E71D: TIFFOpen (tif_unix.c:250)
==2695==    by 0x10965E: main (tiff2pdf.c:753)
==2695==
==2695== Invalid write of size 4
==2695==    at 0x485BF1B: ChopUpSingleUncompressedStrip (tif_dirread.c:5724)
==2695==    by 0x485BF1B: TIFFReadDirectory (tif_dirread.c:4186)
==2695==    by 0x4880257: TIFFClientOpen (tif_open.c:466)
==2695==    by 0x488E632: TIFFFdOpen (tif_unix.c:211)
==2695==    by 0x488E71D: TIFFOpen (tif_unix.c:250)
==2695==    by 0x10965E: main (tiff2pdf.c:753)
==2695==  Address 0x679202c is 4 bytes after a block of size 12,058,624 alloc'd
==2695==    at 0x483019B: malloc (vg_replace_malloc.c:298)
==2695==    by 0x483245C: realloc (vg_replace_malloc.c:785)
==2695==    by 0x488E7FB: _TIFFrealloc (tif_unix.c:336)
==2695==    by 0x484EE57: _TIFFCheckRealloc (tif_aux.c:73)
==2695==    by 0x484EEC5: _TIFFCheckMalloc (tif_aux.c:88)
==2695==    by 0x485BEA7: ChopUpSingleUncompressedStrip (tif_dirread.c:5703)
==2695==    by 0x485BEA7: TIFFReadDirectory (tif_dirread.c:4186)
==2695==    by 0x4880257: TIFFClientOpen (tif_open.c:466)
==2695==    by 0x488E632: TIFFFdOpen (tif_unix.c:211)
==2695==    by 0x488E71D: TIFFOpen (tif_unix.c:250)
==2695==    by 0x10965E: main (tiff2pdf.c:753)
==2695== 
==2695== 
==2695== Process terminating with default action of signal 11 (SIGSEGV)
==2695==  Access not within mapped region at address 0x6793000
==2695==    at 0x485BF17: ChopUpSingleUncompressedStrip (tif_dirread.c:5724)
==2695==    by 0x485BF17: TIFFReadDirectory (tif_dirread.c:4186)
==2695==    by 0x4880257: TIFFClientOpen (tif_open.c:466)
==2695==    by 0x488E632: TIFFFdOpen (tif_unix.c:211)
==2695==    by 0x488E71D: TIFFOpen (tif_unix.c:250)
==2695==    by 0x10965E: main (tiff2pdf.c:753)
==2695==  If you believe this happened as a result of a stack
==2695==  overflow in your program's main thread (unlikely but
==2695==  possible), you can try to increase the size of the
==2695==  main thread stack using the --main-stacksize= flag.
==2695==  The main thread stack size used in this run was 8388608.
==2695== 
==2695== HEAP SUMMARY:
==2695==     in use at exit: 24,121,721 bytes in 13 blocks
==2695==   total heap usage: 24 allocs, 11 frees, 24,122,902 bytes allocated
==2695== 
==2695== LEAK SUMMARY:
==2695==    definitely lost: 0 bytes in 0 blocks
==2695==    indirectly lost: 0 bytes in 0 blocks
==2695==      possibly lost: 0 bytes in 0 blocks
==2695==    still reachable: 24,121,721 bytes in 13 blocks
==2695==         suppressed: 0 bytes in 0 blocks
==2695== Rerun with --leak-check=full to see details of leaked memory
==2695== 
==2695== For counts of detected and suppressed errors, rerun with: -v
==2695== ERROR SUMMARY: 2031 errors from 4 contexts (suppressed: 0 from 0)
Segmentation fault
[...]

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2018-15209
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-15209
[1] http://bugzilla.maptools.org/show_bug.cgi?id=2808

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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