Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [day] [month] [year] [list]
Date: Thu, 28 Jun 2012 08:59:30 -0600
From: Vincent Danen <>
Subject: accountsservice local file disclosure flaw (CVE-2012-2737)

Good day, all.

A local file disclosure flaw was discovered by Florian Weimer of the Red
Hat Product Security Team in accountsservice.  From what I understand,
there are a few distros that use this due to newer GNOME.

The offending code was added here:

A patch to correct the flaw is attached to our bugzilla bug and will be
committed upstream shortly.

The issue is described as follows:

Florian Weimer found a local file disclosure flaw in accountsservice, an
account management system using D-Bus for querying and manipulating user
accounts.  The implementation of the SetIconFile method of the
org.freedesktop.Accounts.User D-Bus interface can disclose arbitrary
files due to a race condition in user_change_icon_file_authorized_cb()
in /usr/libexec/accounts-daemon.  When this function calls
get_caller_uid(), it uses PolicyKit to obtain the UID of the requesting
process from /proc.  At the time the UID is fetched, it may not match
the original UID making the D-Bus request if the process has executed an
SUID binary.

It has been assigned the name CVE-2012-2737.

The distros mailing list was notified of this flaw on Monday (20120625)
and made public today (20120628).

Vincent Danen / Red Hat Security Response Team

Powered by blists - more mailing lists

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.