oss-sec mailing list archives
Re: Re: CVE Request -- PHP 5 - 5.2.11
From: Tomas Hoger <thoger () redhat com>
Date: Fri, 16 Oct 2009 09:31:31 +0200
On Thu, 15 Oct 2009 18:47:15 -0500 Raphael Geissert <geissert () debian 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
Current thread:
- Re: CVE Request -- PHP 5 - 5.2.11 Tomas Hoger (Oct 15)
- <Possible follow-ups>
- Re: CVE Request -- PHP 5 - 5.2.11 Raphael Geissert (Oct 15)
- Re: Re: CVE Request -- PHP 5 - 5.2.11 Tomas Hoger (Oct 16)
- Re: Re: CVE Request -- PHP 5 - 5.2.11 Raphael Geissert (Oct 27)
- Re: Re: CVE Request -- PHP 5 - 5.2.11 Tomas Hoger (Oct 16)