Bug 1429965 (CVE-2016-10244) - CVE-2016-10244 freetype: parse_charstrings function in type1/t1load.c does not ensure that a font contains a glyph name
Summary: CVE-2016-10244 freetype: parse_charstrings function in type1/t1load.c does no...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2016-10244
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: 1429967 1429968 1429969
Blocks: 1429966
TreeView+ depends on / blocked
 
Reported: 2017-03-07 15:17 UTC by Andrej Nemec
Modified: 2019-09-29 14:08 UTC (History)
23 users (show)

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Last Closed: 2017-03-23 05:50:59 UTC
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Description Andrej Nemec 2017-03-07 15:17:53 UTC 
The parse_charstrings function in type1/t1load.c in FreeType 2 does not ensure that a font contains a glyph name, which allows remote attackers to cause a denial of service (heap-based buffer over-read) or possibly have unspecified other impact via a crafted file.

References:

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36

Upstream patch:

http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/src/type1/t1load.c?h=VER-2-7&id=a660e3de422731b94d4a134d27555430cbb6fb39
Comment 1 Andrej Nemec 2017-03-07 15:20:35 UTC 
Created freetype tracking bugs for this issue:

Affects: fedora-all [bug 1429968]


Created mingw-freetype tracking bugs for this issue:

Affects: epel-7 [bug 1429969]
Affects: fedora-all [bug 1429967]
Comment 2 Huzaifa S. Sidhpurwala 2017-03-23 05:50:59 UTC 
Analysis: 

As per the patch, seems to be a OOB read, causing a crash. I dont have access to the reproducer, but seems all versions of freetype shipped with Red Hat Enterprise Linux are affected.
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