Common Vulnerabilities and Exposures assigned CVE-2014-9663 to the following issue:
The tt_cmap4_validate function in sfnt/ttcmap.c in FreeType before 2.5.4
validates a certain length field before that field's value is completely
calculated, which allows remote attackers to cause a denial of service
(out-of-bounds read) or possibly have unspecified other impact via a crafted
cmap SFNT table.
Created freetype tracking bugs for this issue:
Affects: fedora-all [bug 1191099]
freetype-2.5.3-15.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.
freetype-2.5.0-9.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.
Upstream bug is:
Issue was fixed upstream in 2.5.4.
This is a very limited buffer over-read. Two bytes are read from at max 7th and 8th byte after the end of the buffer. After that, another check is reached that detects the problem. This is rather unlikely to cause crash.
Issue is caused by a misplaced check to ensure enough input it still available for further parsing. After the check, length variable indicating remaining input size is decremented to the size of the actually available data.
This issue has been addressed in the following products:
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Via RHSA-2015:0696 https://rhn.redhat.com/errata/RHSA-2015-0696.html