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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
CVE-2016-10244 freetype: parse_charstrings function in type1/t1load.c does no...
Status: CLOSED WONTFIX
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20160825,repor...
: Security
Depends On: 1429969 1429967 1429968
Blocks: 1429966
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Reported: 2017-03-07 10:17 EST by Andrej Nemec
Modified: 2017-03-23 01:50 EDT (History)
23 users (show)

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Last Closed: 2017-03-23 01:50:59 EDT
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Description Andrej Nemec 2017-03-07 10:17:53 EST 
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 10:20:35 EST 
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 01:50:59 EDT 
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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