oss-security - Re: CVE Request: kwallet: incorrect CBC encryption handling

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Message-ID: <20150109065244.GD6810@suse.de>
Date: Fri, 9 Jan 2015 07:52:44 +0100
From: Marcus Meissner <meissner@...e.de>
To: oss-security@...ts.openwall.com
Cc: CVE Assignments MITRE <cve-assign@...re.org>,
	Albert Astals Cid <aacid@....org>
Subject: Re: CVE Request: kwallet: incorrect CBC encryption
 handling

On Fri, Jan 09, 2015 at 07:02:38AM +0100, Salvatore Bonaccorso wrote:
> Hi
> 
> The following KDE Project Security Advisory was issued at
> https://www.kde.org/info/security/advisory-20150109-1.txt .
> 
> > Title:          Fix kwalletd CBC encryption handling
> > Risk Rating:    Low
> > Platforms:      All
> > Versions:       kwalletd < Applications 14.12.1, KF5::KWallet < 5.6.0
> > Author:         Valentin Rusu <kde@...u.info>
> > Date:           9 January 2015
> > 
> > Overview
> > ========
> > 
> > Until KDE Applications 14.12.0, kwalletd incorrectly handled CBC encryption blocks when
> > encrypting secrets in kwl files. The secrets were still encrypted, but the
> > result binary data corresponded to an ECB encrypted block instead of CBC.
> > 
> > Impact
> > ======
> > 
> > The ECB encryption algorithm, even if it'll scramble user data, it'll produce
> > same encrypted byte sequence for the same input text. As a result, attackers
> > may eventually find-out the encrypted text.
> > 
> > Solution
> > ========
> > 
> > For kde-runtime KWallet upgrade to KDE Applications 14.12.1 or apply the following patch:
> >   http://quickgit.kde.org/?p=kde-runtime.git&a=commit&h=14a8232d0b5b1bc5e0ad922292c6b5a1c501165c
> > 
> > For KDE Frameworks 5 KWallet upgrade to 5.6.0 or apply the following patch:
> >   http://quickgit.kde.org/?p=kwallet.git&a=commit&h=6e588d795e6631c3c9d84d85fd3884a159b45849
> > 
> > Credits
> > =======
> > 
> > Thanks to Itay Duvdevani for finding the issue and for letting us know.
> > Thanks to Valentin Rusu for implementing the fix.
> 
> Could you please assing a CVE for this issue?

This is already CVE-2013-7252 I think.

Ciao, Marcus

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