Bug 623625 (CVE-2010-3311)

Summary: CVE-2010-3311 freetype: Input stream position error by processing Compact Font Format (CFF) font files
Product: [Other] Security Response Reporter: Jan Lieskovsky <jlieskov>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: bressers, huzaifas, jrusnack, kem, mkasik, security-response-team, yang.jie
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2015-06-05 06:35:33 UTC Type: ---
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 638139, 638140, 638141, 638142, 638143, 638522, 638838, 638839, 806284    
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Description Flags
don't seek behind stream none

Description Jan Lieskovsky 2010-08-12 10:44:13 UTC 
Marc Schoenefeld found an input stream position error in the
way FreeType font rendering engine processed input file streams.
If a user loaded a specially-crafted font file with an application
linked against FreeType and relevant font glyphs were subsequently
rendered with the X FreeType library (libXft), it could cause the
application to crash or, possibly execute arbitrary code (integer
overflow leading to heap-based buffer overflow in the libXft library)
with the privileges of the user running the application. Different
vulnerability than CVE-2010-1797.

Affected versions: freetype-2.3 and before that.
Latest upstream version (2.4) is not affected
Comment 34 Huzaifa S. Sidhpurwala 2010-09-30 15:12:40 UTC 
Created freetype tracking bugs for this issue

Affects: fedora-all [bug 638522]
Comment 35 errata-xmlrpc 2010-10-04 17:12:55 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 3

Via RHSA-2010:0736 https://rhn.redhat.com/errata/RHSA-2010-0736.html
Comment 36 errata-xmlrpc 2010-10-04 17:54:29 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 4
  Red Hat Enterprise Linux 5

Via RHSA-2010:0737 https://rhn.redhat.com/errata/RHSA-2010-0737.html
Comment 37 errata-xmlrpc 2010-11-10 18:58:09 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2010:0864 https://rhn.redhat.com/errata/RHSA-2010-0864.html
Comment 38 Keyon 2011-01-11 07:46:27 UTC 
(In reply to comment #0)
> Marc Schoenefeld found an input stream position error in the
> way FreeType font rendering engine processed input file streams.
> If a user loaded a specially-crafted font file with an application
> linked against FreeType and relevant font glyphs were subsequently
> rendered with the X FreeType library (libXft), it could cause the
> application to crash or, possibly execute arbitrary code (integer
> overflow leading to heap-based buffer overflow in the libXft library)
> with the privileges of the user running the application. Different
> vulnerability than CVE-2010-1797.
> 
> Affected versions: freetype-2.3 and before that.
> Latest upstream version (2.4) is not affected

as patch file (don't seek behind stream (1.07 KB, patch) 2010-08-16 09:52 EDT, Marek Kašík ), version 2.4.x(x=1~4) should also be affected, Jan Lieskovsky, do you think so?
Comment 39 Huzaifa S. Sidhpurwala 2011-01-11 07:58:33 UTC 
Hi,
(In reply to comment #38)

> as patch file (don't seek behind stream (1.07 KB, patch) 2010-08-16 09:52 EDT,
> Marek Kašík ), version 2.4.x(x=1~4) should also be affected, Jan Lieskovsky, do
> you think so?

The following upstream commit fixes this problem in freetype 2.4.x:


commit 75787c19eab20874c5d588842c52e59cfbd9302a
Author: Werner Lemberg <wl>
Date:   Sat Jun 26 09:24:08 2010 +0200

    Add some memory checks (mainly for debugging).

    * src/base/ftstream.c (FT_Stream_EnterFrame): Exit with error
    if the frame size is larger than the stream size.

    * src/base/ftsystem.c (ft_ansi_stream_io): Exit with error if
    seeking a position larger than the stream size.
Comment 40 Keyon 2011-01-13 09:32:08 UTC 
(In reply to comment #39)
> Hi,
> (In reply to comment #38)
> > as patch file (don't seek behind stream (1.07 KB, patch) 2010-08-16 09:52 EDT,
> > Marek Kašík ), version 2.4.x(x=1~4) should also be affected, Jan Lieskovsky, do
> > you think so?
> The following upstream commit fixes this problem in freetype 2.4.x:
> commit 75787c19eab20874c5d588842c52e59cfbd9302a
> Author: Werner Lemberg <wl>
> Date:   Sat Jun 26 09:24:08 2010 +0200
>     Add some memory checks (mainly for debugging).
>     * src/base/ftstream.c (FT_Stream_EnterFrame): Exit with error
>     if the frame size is larger than the stream size.
>     * src/base/ftsystem.c (ft_ansi_stream_io): Exit with error if
>     seeking a position larger than the stream size.

thanks, Huzaifa.