Bug 31346 – openvpn: Insecure HMAC comparison (3.0)

Bug 31346 - openvpn: Insecure HMAC comparison (3.0)


Summary:	openvpn: Insecure HMAC comparison (3.0)

Status:	CLOSED WONTFIX

Product:	UCS
Classification:	Unclassified
Component:	Security updates
Version:	UCS 3.0
Hardware:	Other Linux

Importance:	P4 normal (vote)
Target Milestone:	UCS 3.0-x-errata
Assigned To:	Security maintainers
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Reported:	2013-05-13 13:06 CEST by Moritz Muehlenhoff
Modified:	2019-04-11 19:23 CEST (History)
CC List:	0 users

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Description Moritz Muehlenhoff

2013-05-13 13:06:53 CEST

+++ This bug was initially created as a clone of Bug #31345 +++

CVE-2013-2061

An information leak in the implementation of HMAC comparisons can allow a
chosen ciphertext attack. This is currently only known to be exploitable with
PolarSSL (which isn't used in UCS) and generally only exploitable with an
attacker being the man-in-the-middle.

More information in the upstream announcement:
https://community.openvpn.net/openvpn/wiki/SecurityAnnouncement-f375aa67cc

Comment 1 Moritz Muehlenhoff

2013-07-01 08:27:17 CEST

The maintenance with bug and security fixes for UCS 3.0-x has ended on 30th June 2013. 

The maintenance of the UCS 3.x major series is continued by UCS 3.1-x that is
supplied with bug and security fixes.

Customers still on UCS 3.0-x are encouraged to update to UCS 3.1 that contains,
among other things, Linux Kernel 3.2, Univention App Center, an update of Samba
3 and Samba 4, support for Microsoft Windows 2012 and Windows 8. Please contact
your partner or Univention for any questions.