oss-sec mailing list archives
Re: CVE request: cups - potential integer overflow in PNG image reader [was: CUPS DoS via RSS subscriptions]
From: Jan Lieskovsky <jlieskov () redhat com>
Date: Tue, 25 Nov 2008 12:39:00 +0100
Hello Steve and Eygene, On Fri, 2008-11-21 at 07:23 -0800, Michael Sweet wrote:
Eygene Ryabinkin wrote:Steve, good day. Thu, Nov 20, 2008 at 07:41:06PM -0500, Steven M. Christey wrote:I treated this as two CVEs, one for the CSRF-simplifying attack, and a separate one for the CUPS server crash (assuming that cupsd should not be crashable by non-root authenticated users).Please note that as it was discuissed in thread started with http://www.openwall.com/lists/oss-security/2008/11/19/4 even 1.3.9 is crashable by non-root authenticated users by adding a big number of subscriptions (don't know about RSS ones, though subscription for mailing upon job completion does its job). But I imagine that CVE-2008-5184 can't be used for 1.3.9, so remote attack is not feasible. I expect that the fix will go into 1.3.10: http://svn.easysw.com/public/cups/trunk/CHANGES-1.3.txt
Eygene - Thanks for the post! Btw. this CHANGES-1.3.txt files also mentions another security flaw, i.e incomplete fix for CVE-2008-1722: <cite> - SECURITY: The PNG image reading code did not validate the image size properly, leading to a potential buffer overflow (STR #2974) </cite> The relevant upstream cups BTS post together with patch attached is here: Advisory: http://www.cups.org/str.php?L2974 Patch: http://www.cups.org/strfiles/2974/str2974.patch This issue seems to be introduced by the fix for CVE-2008-1722, i.e: Advisory: http://www.cups.org/str.php?L2790 Patch: http://www.cups.org/strfiles/2790/str2790.patch Steve, could you please allocate a new CVE identifier for this one? Thanks, Jan. -- Jan iankko Lieskovsky / Red Hat Security Response Team
Current thread:
- CVE request: CUPS DoS via RSS subscriptions Kees Cook (Nov 19)
- Re: CVE request: CUPS DoS via RSS subscriptions Steven M. Christey (Nov 20)
- Re: CVE request: CUPS DoS via RSS subscriptions Eygene Ryabinkin (Nov 20)
- Re: CVE request: CUPS DoS via RSS subscriptions Michael Sweet (Nov 21)
- Re: CVE request: cups - potential integer overflow in PNG image reader [was: CUPS DoS via RSS subscriptions] Jan Lieskovsky (Nov 25)
- Re: CVE request: cups - potential integer overflow in PNG image reader [was: CUPS DoS via RSS subscriptions] Eygene Ryabinkin (Nov 25)
- Re: CVE request: cups - potential integer overflow in PNG image reader [was: CUPS DoS via RSS subscriptions] Tomas Hoger (Nov 25)
- Message not available
- Message not available
- Re: CVE request: cups - potential integer overflow in PNG image reader [was: CUPS DoS via RSS subscriptions] Tomas Hoger (Dec 03)
- Re: CVE request: CUPS DoS via RSS subscriptions Eygene Ryabinkin (Nov 20)
- Re: CVE request: CUPS DoS via RSS subscriptions Steven M. Christey (Nov 20)
- <Possible follow-ups>
- Re: CVE request: CUPS DoS via RSS subscriptions Josh Bressers (Nov 19)
- Re: CVE request: CUPS DoS via RSS subscriptions Eygene Ryabinkin (Nov 19)
- Re: CVE request: CUPS DoS via RSS subscriptions Michael Sweet (Nov 19)
- Re: CVE request: CUPS DoS via RSS subscriptions Eygene Ryabinkin (Nov 20)
- Re: CVE request: CUPS DoS via RSS subscriptions Michael R Sweet (Nov 20)
- Re: CVE request: CUPS DoS via RSS subscriptions Eygene Ryabinkin (Nov 19)