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Bug 1254176 - FreeRADIUS 2.2.6 miscalculates MPPE keys with TLS 1.2
Summary: FreeRADIUS 2.2.6 miscalculates MPPE keys with TLS 1.2
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: freeradius
Version: 6.8
Hardware: All
OS: Unspecified
high
high
Target Milestone: rc
: ---
Assignee: Nikolai Kondrashov
QA Contact: Patrik Kis
URL:
Whiteboard:
Depends On: 1248484
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-08-17 11:03 UTC by Jan Kurik
Modified: 2019-11-14 06:53 UTC (History)
12 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Previously, when using the Extensible Authentication Protection (EAP) to authenticate clients that use the TLS 1.2 protocol, such as systems with iOS 9 or Windows 7, the connection with the authentication server could not be established and the operation thus failed. This update ensures that Microsoft Point-to-Point Encryption (MPPE) keys are calculated correctly when TLS 1.2 is used, which prevents the described problem from occurring.
Clone Of: 1248484
Environment:
Last Closed: 2015-09-22 14:02:46 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2015:1829 0 normal SHIPPED_LIVE freeradius bug fix update 2015-09-22 17:46:18 UTC

Description Jan Kurik 2015-08-17 11:03:14 UTC 
This bug has been copied from bug #1248484 and has been proposed
to be backported to 6.7 z-stream (EUS).
Comment 5 Nick Lowe 2015-08-24 09:59:00 UTC 
Suggest correcting the Doc Text to:

Previously, when using Extensible Authentication Protection (EAP) to authenticate clients that use the TLS 1.2 protocol, such as systems with iOS 9, OS X El Capitan (OS X 11), wpa_supplicant 2.4 and, when configured, Windows 7 and later, a usable association to a WPA2-Enterprise/802.1X SSID could not be established and the connection thus failed. This update ensures that Microsoft Point-to-Point Encryption (MPPE) keys are calculated correctly when TLS 1.2 is used, which prevents the described problem from occurring. The Master Session Key (MSK) is derived from the MS-MPPE-Recv-Key (MasterReceiveKey) and MS-MPPE-Send-Key (MasterSendKey).
Comment 6 Nick Lowe 2015-08-27 13:41:33 UTC 
The public release date for iOS 9 is likely to be in mid-September. Please can a patch for this be available by then?
Comment 8 Nikolai Kondrashov 2015-09-08 16:09:11 UTC 
Nick,

We prepared a fixed package and it's ready to be included in the next Z-Stream release. However, during testing we found that FreeRADIUS v2.x.x doesn't seem to work with EAP-TTLS/CHAP/MSCHAP/MSCHAPv2 when running with wpa_supplicant 2.4. That includes the latest v2.x.x release - v2.2.8. All the other relevant wpa_supplicant methods seem to work. We're not sure what's at fault here, at this moment - FreeRADIUS or WPA supplicant.

Would this state of support be satisfactory, or do we need to pursue a solution for these apparently broken EAP types?
Comment 10 Nick Lowe 2015-09-09 15:27:59 UTC 
Sorry, I've just seen this.

Having seen your message in the FreeRADIUS mailing list and the subsequent replies, I understand that the fixes are here:

https://github.com/FreeRADIUS/freeradius-server/commit/905aadc266c19e7fb6615f79280f67023a46ee4e

https://github.com/FreeRADIUS/freeradius-server/commit/a79e943d49b3a9cad3c7bc2ff0fe618bc43192b5

Well found! :)

Cheers,

Nick
Comment 18 errata-xmlrpc 2015-09-22 14:02:46 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-1829.html
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