Array index error in the t42_parse_sfnts function in type42/t42parse.c in FreeType before 2.4.2 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via negative size values for certain strings in FontType42 font files, leading to a heap-based buffer overflow.
freetype.sourceforge.net/index2.html#release-freetype-2.4.2
git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=c06da1ad34663da7b6fc39b030dc3ae185b96557
lists.apple.com/archives/security-announce/2010//Nov/msg00000.html
lists.apple.com/archives/security-announce/2010//Nov/msg00003.html
marc.info/?l=oss-security&m=128111955616772&w=2
secunia.com/advisories/40816
secunia.com/advisories/40982
secunia.com/advisories/42314
secunia.com/advisories/42317
sourceforge.net/projects/freetype/files/freetype2/2.4.2/NEWS/view
support.apple.com/kb/HT4435
support.apple.com/kb/HT4456
support.apple.com/kb/HT4457
www.redhat.com/support/errata/RHSA-2010-0864.html
www.securityfocus.com/bid/42285
www.ubuntu.com/usn/USN-972-1
www.vupen.com/english/advisories/2010/2018
www.vupen.com/english/advisories/2010/2106
www.vupen.com/english/advisories/2010/3045
www.vupen.com/english/advisories/2010/3046
bugs.launchpad.net/ubuntu/maverick/+source/freetype/+bug/617019
bugzilla.redhat.com/show_bug.cgi?id=621980
rhn.redhat.com/errata/RHSA-2010-0736.html
rhn.redhat.com/errata/RHSA-2010-0737.html
savannah.nongnu.org/bugs/?30656