[Bug 800584] CVE-2012-1128 freetype: NULL dereference in the SHZ instruction implementation in TTF BCI (#35601)
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bugzilla at redhat.com
Wed Mar 14 17:05:47 UTC 2012
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https://bugzilla.redhat.com/show_bug.cgi?id=800584
Tomas Hoger <thoger at redhat.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|CVE-2012-1128 freetype: |CVE-2012-1128 freetype:
|NULL pointer dereference by |NULL dereference in the SHZ
|moving zone2 pointer point |instruction implementation
|for certain TrueType font |in TTF BCI (#35601)
|(FU#35601) |
Status Whiteboard|impact=low,public=20120223, |impact=low,public=20120223,
|reported=20120302,source=go |reported=20120302,source=se
|ogle,cvss2=4.3/AV:N/AC:M/Au |calert,cvss2=4.3/AV:N/AC:M/
|:N/C:N/I:N/A:P,rhel-5/freet |Au:N/C:N/I:N/A:P,rhel-5/fre
|ype=notaffected,rhel-6/free |etype=notaffected,rhel-6/fr
|type=notaffected,fedora-all |eetype=notaffected,fedora-a
|/freetype=affected |ll/freetype=affected
--- Comment #5 from Tomas Hoger <thoger at redhat.com> 2012-03-14 13:05:45 EDT ---
This flaw is in the TrueType bytecode interpreter (BCI) implementation. BCI is
not enabled in Red Hat Enterprise Linux 4, 5, and 6 freetype packages (it was
disabled by default upstream because of the patent concerns). BCI support is
now enabled by default in upstream versions 2.4 and later, as relevant patents
expired: http://www.freetype.org/patents.html
Statement:
Not vulnerable. This issue did not affect freetype packages as shipped with Red
Hat Enterprise Linux 5 and 6, as they do not enable TrueType bytecode
interpreter.
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