[Bug 1191085] New: CVE-2014-9663 freetype: out-of-bounds read in the tt_cmap4_validate function in sfnt/ttcmap.c

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1191085

            Bug ID: 1191085
           Summary: CVE-2014-9663 freetype: out-of-bounds read in the
                    tt_cmap4_validate function in sfnt/ttcmap.c
           Product: Security Response
         Component: vulnerability
          Keywords: Security
          Severity: medium
          Priority: medium
          Assignee: security-response-team(a)redhat.com
          Reporter: vkaigoro(a)redhat.com
                CC: behdad(a)fedoraproject.org,
                    fonts-bugs(a)lists.fedoraproject.org,
                    kevin(a)tigcc.ticalc.org, mkasik(a)redhat.com



Common Vulnerabilities and Exposures assigned CVE-2014-9663 to the following
issue:

The tt_cmap4_validate function in sfnt/ttcmap.c in FreeType before 2.5.4
validates a certain length field before that field's value is completely
calculated, which allows remote attackers to cause a denial of service
(out-of-bounds read) or possibly have unspecified other impact via a crafted
cmap SFNT table.

http://code.google.com/p/google-security-research/issues/detail?id=184
http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=9bd20b...

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[Bug 1191085] CVE-2014-9663 freetype: out-of-bounds read in the tt_cmap4_validate function in sfnt/ttcmap.c

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1191085

Vasyl Kaigorodov <vkaigoro(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Depends On|                            |1191099




Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1191099
[Bug 1191099] CVE-2014-9656 CVE-2014-9657 CVE-2014-9661 CVE-2014-9660
CVE-2014-9662 CVE-2014-9658 CVE-2014-9659 freetype: various flaws
[fedora-all]
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[Bug 1191085] CVE-2014-9663 freetype: out-of-bounds read in the tt_cmap4_validate function in sfnt/ttcmap.c

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1191085



--- Comment #1 from Vasyl Kaigorodov <vkaigoro(a)redhat.com&gt; ---

Created freetype tracking bugs for this issue:

Affects: fedora-all [bug 1191099]

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[Bug 1191085] CVE-2014-9663 freetype: out-of-bounds read in the tt_cmap4_validate function in sfnt/ttcmap.c

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1191085

Vasyl Kaigorodov <vkaigoro(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |1191102



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[Bug 1191085] CVE-2014-9663 freetype: out-of-bounds read in the tt_cmap4_validate function in sfnt/ttcmap.c

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1191085
Bug 1191085 depends on bug 1191099, which changed state.

Bug 1191099 Summary: CVE-2014-9656 CVE-2014-9657 CVE-2014-9661 CVE-2014-9660 CVE-2014-9667
CVE-2014-9666 CVE-2014-9665 CVE-2014-9664 CVE-2014-9669 CVE-2014-9668 CVE-2014-9662
CVE-2014-9658 CVE-2014-9659 CVE-2014-9663 CVE-2014-9670 freetype: various flaws
[fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=1191099

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ON_QA                       |CLOSED
         Resolution|---                         |ERRATA



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[Bug 1191085] CVE-2014-9663 freetype: out-of-bounds read in the tt_cmap4_validate function in sfnt/ttcmap.c

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1191085



--- Comment #2 from Fedora Update System <updates(a)fedoraproject.org&gt; ---
freetype-2.5.3-15.fc21 has been pushed to the Fedora 21 stable repository.  If
problems still persist, please make note of it in this bug report.

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[Bug 1191085] CVE-2014-9663 freetype: out-of-bounds read in the tt_cmap4_validate function in sfnt/ttcmap.c

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1191085



--- Comment #3 from Fedora Update System <updates(a)fedoraproject.org&gt; ---
freetype-2.5.0-9.fc20 has been pushed to the Fedora 20 stable repository.  If
problems still persist, please make note of it in this bug report.

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[Bug 1191085] CVE-2014-9663 freetype: out-of-bounds read in tt_cmap4_validate()

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1191085

Tomas Hoger <thoger(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|medium                      |low
   Fixed In Version|                            |freetype 2.5.4
            Summary|CVE-2014-9663 freetype:     |CVE-2014-9663 freetype:
                   |out-of-bounds read in the   |out-of-bounds read in
                   |tt_cmap4_validate function  |tt_cmap4_validate()
                   |in sfnt/ttcmap.c            |
         Whiteboard|impact=moderate,public=2014 |impact=low,public=20141124,
                   |1124,reported=20150210,sour |reported=20150210,source=cv
                   |ce=cve,cvss2=3.7/AV:L/AC:H/ |e,cvss2=2.6/AV:N/AC:H/Au:N/
                   |Au:N/C:P/I:P/A:P,fedora-all |C:N/I:N/A:P,cwe=CWE-125,rhe
                   |/freetype=affected,rhel-5/f |l-4/freetype=wontfix,rhel-5
                   |reetype=new,rhel-6/freetype |/freetype=wontfix,rhel-6/fr
                   |=new,rhel-7/freetype=new    |eetype=affected,rhel-7/free
                   |                            |type=affected,rhev-m-3/ming
                   |                            |w-virt-viewer=affected,fedo
                   |                            |ra-all/freetype=affected,fe
                   |                            |dora-all/mingw-freetype=aff
                   |                            |ected,epel-7/mingw-freetype
                   |                            |=affected
           Severity|medium                      |low



--- Comment #4 from Tomas Hoger <thoger(a)redhat.com&gt; ---
Upstream bug is:
https://savannah.nongnu.org/bugs/?43656

Issue was fixed upstream in 2.5.4.

This is a very limited buffer over-read.  Two bytes are read from at max 7th
and 8th byte after the end of the buffer.  After that, another check is reached
that detects the problem.  This is rather unlikely to cause crash.

Issue is caused by a misplaced check to ensure enough input it still available
for further parsing.  After the check, length variable indicating remaining
input size is decremented to the size of the actually available data.

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[Bug 1191085] CVE-2014-9663 freetype: out-of-bounds read in tt_cmap4_validate()

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1191085

Martin Prpic <mprpic(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Depends On|                            |1197737



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[Bug 1191085] CVE-2014-9663 freetype: out-of-bounds read in tt_cmap4_validate()

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1191085

Martin Prpic <mprpic(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Depends On|                            |1197738



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[Bug 1191085] CVE-2014-9663 freetype: out-of-bounds read in tt_cmap4_validate()

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1191085

Martin Prpic <mprpic(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Depends On|                            |1197739



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[Bug 1191085] CVE-2014-9663 freetype: out-of-bounds read in tt_cmap4_validate()

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1191085

Martin Prpic <mprpic(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Depends On|                            |1197740



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[Bug 1191085] CVE-2014-9663 freetype: out-of-bounds read in tt_cmap4_validate()

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1191085



--- Comment #7 from errata-xmlrpc <errata-xmlrpc(a)redhat.com&gt; ---
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 7

Via RHSA-2015:0696 https://rhn.redhat.com/errata/RHSA-2015-0696.html

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[Bug 1191085] CVE-2014-9663 freetype: out-of-bounds read in tt_cmap4_validate()

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1191085

Tomas Hoger <thoger(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |CLOSED
         Resolution|---                         |ERRATA
        Last Closed|                            |2015-03-18 03:40:50



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[Bug 1191085] CVE-2014-9663 freetype: out-of-bounds read in tt_cmap4_validate()

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1191085

Vincent Danen <vdanen(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Whiteboard|impact=low,public=20141124, |impact=low,public=20141124,
                   |reported=20150210,source=cv |reported=20150210,source=cv
                   |e,cvss2=2.6/AV:N/AC:H/Au:N/ |e,cvss2=2.6/AV:N/AC:H/Au:N/
                   |C:N/I:N/A:P,cwe=CWE-125,rhe |C:N/I:N/A:P,cwe=CWE-125,rhe
                   |l-4/freetype=wontfix,rhel-5 |l-4/freetype=wontfix,rhel-5
                   |/freetype=wontfix,rhel-6/fr |/freetype=wontfix,rhel-6/fr
                   |eetype=affected,rhel-7/free |eetype=notaffected,rhel-7/f
                   |type=affected,rhev-m-3/ming |reetype=affected,rhev-m-3/m
                   |w-virt-viewer=affected,fedo |ingw-virt-viewer=affected,f
                   |ra-all/freetype=affected,fe |edora-all/freetype=affected
                   |dora-all/mingw-freetype=aff |,fedora-all/mingw-freetype=
                   |ected,epel-7/mingw-freetype |affected,epel-7/mingw-freet
                   |=affected                   |ype=affected



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[Bug 1191085] CVE-2014-9663 freetype: out-of-bounds read in tt_cmap4_validate()

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1191085

Ján Rusnačko <jrusnack(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Whiteboard|impact=low,public=20141124, |impact=low,public=20141124,
                   |reported=20150210,source=cv |reported=20150210,source=cv
                   |e,cvss2=2.6/AV:N/AC:H/Au:N/ |e,cvss2=2.6/AV:N/AC:H/Au:N/
                   |C:N/I:N/A:P,cwe=CWE-125,rhe |C:N/I:N/A:P,cwe=CWE-125,rhe
                   |l-4/freetype=wontfix,rhel-5 |l-4/freetype=wontfix,rhel-5
                   |/freetype=wontfix,rhel-6/fr |/freetype=wontfix,rhel-6/fr
                   |eetype=notaffected,rhel-7/f |eetype=affected,rhel-7/free
                   |reetype=affected,rhev-m-3/m |type=affected,rhev-m-3/ming
                   |ingw-virt-viewer=affected,f |w-virt-viewer=affected,fedo
                   |edora-all/freetype=affected |ra-all/freetype=affected,fe
                   |,fedora-all/mingw-freetype= |dora-all/mingw-freetype=aff
                   |affected,epel-7/mingw-freet |ected,epel-7/mingw-freetype
                   |ype=affected                |=affected



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