Bug 746226 (CVE-2011-3256) - CVE-2011-3256 freetype: FT_Bitmap_New integer overflow, FreeType TT_Vary_Get_Glyph_Deltas improper input validation
Summary: CVE-2011-3256 freetype: FT_Bitmap_New integer overflow, FreeType TT_Vary_Get_...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2011-3256
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 747081 747082 747083 747084 747941 749174 749175 785154 806289 889398
Blocks: 746228 785174
TreeView+ depends on / blocked
 
Reported: 2011-10-14 12:51 UTC by Jan Lieskovsky
Modified: 2019-09-29 12:48 UTC (History)
4 users (show)

Fixed In Version: freetype 2.4.7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-08-24 15:46:13 UTC
Embargoed:

Attachments (Terms of Use)
upstream patch (6.64 KB, patch)
2011-10-18 14:55 UTC, Huzaifa S. Sidhpurwala 		no flags Details | Diff
View All


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:1402 0 normal SHIPPED_LIVE Important: freetype security update 2011-10-25 18:22:18 UTC
Red Hat Product Errata RHSA-2012:0094 0 normal SHIPPED_LIVE Important: freetype security update 2012-02-03 03:29:22 UTC

Description Jan Lieskovsky 2011-10-14 12:51:24 UTC 
Common Vulnerabilities and Exposures assigned an identifier CVE-2011-3256 to
the following vulnerability:

FreeType in CoreGraphics in Apple iOS before 5 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted font.

References:
[1] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3256
[2] http://support.apple.com/kb/HT4999
[3] http://lists.apple.com/archives/Security-announce/2011//Oct/msg00001.html

Relevant upstream patch:
[4] http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=9c98fbf634a83c6ea286395f0e788956eafd5aeb
Comment 4 Jan Lieskovsky 2011-10-18 12:52:30 UTC 
Corrected in v2.4.7 upstream release:
[5] http://sourceforge.net/projects/freetype/files/freetype2/2.4.7/README/view
[6] http://freetype.sourceforge.net/index2.html#release-freetype-2.4.7
Comment 5 Huzaifa S. Sidhpurwala 2011-10-18 14:55:03 UTC 
Created attachment 528829 [details]
upstream patch
Comment 6 Ramon de C Valle 2011-10-18 17:03:15 UTC 
It seems that this issue not only affects the versions of FreeType as shipped with Red Hat Enterprise Linux 4, 5 and 6, but also affects the versions of FreeType embedded in other packages. I'm still not sure if ots can influence on something for Firefox and Thunderbird, because it would reduce its score considerably.
Comment 11 errata-xmlrpc 2011-10-25 18:22:28 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 4
  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2011:1402 https://rhn.redhat.com/errata/RHSA-2011-1402.html
Comment 12 Ramon de C Valle 2011-10-26 12:10:25 UTC 
Created mingw32-freetype tracking bugs for this issue

Affects: fedora-all [bug 749175]
Comment 13 Ramon de C Valle 2011-10-26 12:10:28 UTC 
Created freetype tracking bugs for this issue

Affects: fedora-all [bug 749174]
Comment 14 errata-xmlrpc 2012-02-02 22:33:24 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5.6 EUS - Server Only

Via RHSA-2012:0094 https://rhn.redhat.com/errata/RHSA-2012-0094.html
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