oss-sec mailing list archives
Re: Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777
From: Kurt Seifried <kseifried () redhat com>
Date: Wed, 04 Mar 2015 11:37:39 -0700
On 04/03/15 11:14 AM, Donald Stufft wrote:
On Mar 4, 2015, at 12:55 PM, Kurt Seifried <kseifried () redhat com> wrote: https://bugzilla.redhat.com/show_bug.cgi?id=1198740 Jan Bee of the Google Security Team reports: The /usr/sbin/rhnreg_ks fails to properly validate hostnames in certificates. This can result in man in the middle attacks. === Please note that this issue cannot easily be exploited to cause any significant damage to a system other then preventing registration from taking place properly which the attacker would be able to do in any event if the can man in the middle the connection. -- Kurt Seifried -- Red Hat -- Product Security -- Cloud PGP A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993Note: Python 2.7.9+ and 3.4.3+ will cause most apps like this to automatically start validating hostnames. It may be easier to backport those changes than to find every Python app that doesn’t check hostnames.
Yup, I am aware of that, but as you know Red Hat is pretty conservative on updates to things like Python/etc because we have to support customer applications that we have never seen and will never see (e.g. internal corp software), and if we break those apps due to changes in underlying languages there is a big problem.
--- Donald Stufft PGP: 7C6B 7C5D 5E2B 6356 A926 F04F 6E3C BCE9 3372 DCFA
-- Kurt Seifried -- Red Hat -- Product Security -- Cloud PGP A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993
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Current thread:
- Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777 Kurt Seifried (Mar 04)
- Re: Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777 Donald Stufft (Mar 04)
- Re: Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777 Kurt Seifried (Mar 04)
- Re: Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777 John Haxby (Mar 05)
- Re: Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777 Kurt Seifried (Mar 05)
- Re: Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777 Michael Samuel (Mar 05)
- Re: Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777 Kurt Seifried (Mar 05)
- Re: Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777 John Haxby (Mar 06)
- Re: Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777 Kurt Seifried (Mar 06)
- Re: Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777 John Haxby (Mar 08)
- Re: Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777 Kurt Seifried (Mar 09)
- Re: Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777 John Haxby (Mar 09)
- Re: Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777 Kurt Seifried (Mar 09)
- Re: Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777 Kurt Seifried (Mar 04)
- Re: Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777 Donald Stufft (Mar 04)