Date: Fri, 16 Oct 2009 09:31:31 +0200 From: Tomas Hoger <thoger@...hat.com> To: geissert@...ian.org Cc: oss-security@...ts.openwall.com Subject: Re: Re: CVE Request -- PHP 5 - 5.2.11 On Thu, 15 Oct 2009 18:47:15 -0500 Raphael Geissert <geissert@...ian.org> wrote: > > Name: CVE-2009-3291 > > > > The php_openssl_apply_verification_policy function in PHP before > > 5.2.11 does not properly perform certificate validation, which has > > unknown impact and attack vectors, probably related to an ability to > > spoof certificates. > > Yes, seems to be related to an improper handling of \0 in the CN > field. Agree. This change, however, seems to have a minimal impact on today's real world PHP applications. Certificate verification is not enabled by default and there seem to be very few applications that actually enable it. I have some notes in: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2009-3291 > > Name: CVE-2009-3292 > > > > Unspecified vulnerability in PHP before 5.2.11 has unknown impact > > and attack vectors related to "missing sanity checks around exif > > processing." > > It is related to missing sanity checks when determining the length of > sections of jpg headers and a missing limit on the nesting level of > TIFF files. There are 3 changes in the upstream path: - missing header length check, with similar impact as CVE-2009-2687 in the worst case - missing nesting level checks for TIFFs, crafted file can lead to deep recursion exhausting stack memory resulting in rather harmless crash - missing EOF checks, possibly leading to NULL deref or PHP memory limit exception https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2009-3292 -- Tomas Hoger / Red Hat Security Response Team
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