Bug 1444898 (CVE-2017-7857) - CVE-2017-7857 freetype: heap-based buffer overflow related to the TT_Get_MM_Var function
Summary: CVE-2017-7857 freetype: heap-based buffer overflow related to the TT_Get_MM_V...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2017-7857
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1444915 1444916 1444917
Blocks: 1444919
TreeView+ depends on / blocked
 
Reported: 2017-04-24 14:04 UTC by Adam Mariš
Modified: 2019-09-29 14:11 UTC (History)
21 users (show)

Fixed In Version:
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Last Closed: 2017-06-29 04:48:33 UTC
Embargoed:

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Description Adam Mariš 2017-04-24 14:04:06 UTC 
FreeType 2 before 2017-03-08 has an out-of-bounds write caused by a heap-based buffer overflow related to the TT_Get_MM_Var function in truetype/ttgxvar.c and the sfnt_init_face function in sfnt/sfobjs.c.

Bug report:

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=759

Upstream patch:

https://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=7bbb91fbf47fc0775cc9705673caf0c47a81f94b
Comment 1 Adam Mariš 2017-04-24 14:28:52 UTC 
Created freetype tracking bugs for this issue:

Affects: fedora-all [bug 1444917]


Created mingw-freetype tracking bugs for this issue:

Affects: epel-7 [bug 1444915]
Affects: fedora-all [bug 1444916]
Comment 2 Marek Kašík 2017-04-28 15:26:40 UTC 
While I can reproduce this with the commit mentioned in the chromium bug report I can not reproduce this on F24, F25, F26 or rawhide.
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