ubuntu-security-announce Digest, Vol 102, Issue 1

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Today's Topics:

1. [USN-1754-1] Sudo vulnerability (Marc Deslauriers)
2. [USN-1732-2] OpenSSL regression (Marc Deslauriers)
3. [USN-1729-2] Firefox regression (Jamie Strandboge)


----------------------------------------------------------------------

Message: 1
Date: Thu, 28 Feb 2013 08:22:47 -0500
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1754-1] Sudo vulnerability
Message-ID: <512F5A27.6070007@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"

==========================================================================
Ubuntu Security Notice USN-1754-1
February 28, 2013

sudo vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS

Summary:

Sudo could be made to run programs as the administrator without a password
prompt.

Software Description:
- sudo: Provide limited super user privileges to specific users

Details:

Marco Schoepl discovered that Sudo incorrectly handled time stamp files
when the system clock is set to epoch. A local attacker could use this
issue to run Sudo commands without a password prompt.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.10:
sudo 1.8.5p2-1ubuntu1.1
sudo-ldap 1.8.5p2-1ubuntu1.1

Ubuntu 12.04 LTS:
sudo 1.8.3p1-1ubuntu3.4
sudo-ldap 1.8.3p1-1ubuntu3.4

Ubuntu 11.10:
sudo 1.7.4p6-1ubuntu2.2
sudo-ldap 1.7.4p6-1ubuntu2.2

Ubuntu 10.04 LTS:
sudo 1.7.2p1-1ubuntu5.6
sudo-ldap 1.7.2p1-1ubuntu5.6

Ubuntu 8.04 LTS:
sudo 1.6.9p10-1ubuntu3.10
sudo-ldap 1.6.9p10-1ubuntu3.10

In general, a standard system update will make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1754-1
CVE-2013-1775

Package Information:
https://launchpad.net/ubuntu/+source/sudo/1.8.5p2-1ubuntu1.1
https://launchpad.net/ubuntu/+source/sudo/1.8.3p1-1ubuntu3.4
https://launchpad.net/ubuntu/+source/sudo/1.7.4p6-1ubuntu2.2
https://launchpad.net/ubuntu/+source/sudo/1.7.2p1-1ubuntu5.6
https://launchpad.net/ubuntu/+source/sudo/1.6.9p10-1ubuntu3.10


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Message: 2
Date: Thu, 28 Feb 2013 13:44:07 -0500
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1732-2] OpenSSL regression
Message-ID: <512FA577.7010204@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"

==========================================================================
Ubuntu Security Notice USN-1732-2
February 28, 2013

openssl regression
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.10
- Ubuntu 12.04 LTS

Summary:

USN-1732-1 introduced a regression in OpenSSL.

Software Description:
- openssl: Secure Socket Layer (SSL) cryptographic library and tools

Details:

USN-1732-1 fixed vulnerabilities in OpenSSL. The fix for CVE-2013-0166 and
CVE-2012-2686 introduced a regression causing decryption failures on
hardware supporting AES-NI. This update temporarily reverts the security
fix pending further investigation. We apologize for the inconvenience.

Original advisory details:

Adam Langley and Wolfgang Ettlingers discovered that OpenSSL incorrectly
handled certain crafted CBC data when used with AES-NI. A remote attacker
could use this issue to cause OpenSSL to crash, resulting in a denial of
service. This issue only affected Ubuntu 12.04 LTS and Ubuntu 12.10.
(CVE-2012-2686)
Nadhem Alfardan and Kenny Paterson discovered that the TLS protocol as
used
in OpenSSL was vulnerable to a timing side-channel attack known as the
"Lucky Thirteen" issue. A remote attacker could use this issue to perform
plaintext-recovery attacks via analysis of timing data. (CVE-2013-0169)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.10:
libssl1.0.0 1.0.1c-3ubuntu2.2
openssl 1.0.1c-3ubuntu2.2

Ubuntu 12.04 LTS:
libssl1.0.0 1.0.1-4ubuntu5.7
openssl 1.0.1-4ubuntu5.7

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1732-2
http://www.ubuntu.com/usn/usn-1732-1
https://launchpad.net/bugs/1133333

Package Information:
https://launchpad.net/ubuntu/+source/openssl/1.0.1c-3ubuntu2.2
https://launchpad.net/ubuntu/+source/openssl/1.0.1-4ubuntu5.7


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Message: 3
Date: Thu, 28 Feb 2013 22:17:54 -0600
From: Jamie Strandboge <jamie@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1729-2] Firefox regression
Message-ID: <51302BF2.10606@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"


==========================================================================
Ubuntu Security Notice USN-1729-2
March 01, 2013

firefox regression
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 11.10

Summary:

Due to a regression, Firefox might crash or freeze under normal use.

Software Description:
- firefox: Mozilla Open Source web browser

Details:

USN-1729-1 fixed vulnerabilities in Firefox. This update introduced a
regression which sometimes resulted in freezes and crashes when using
multiple tabs with images displayed. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Olli Pettay, Christoph Diehl, Gary Kwong, Jesse Ruderman, Andrew McCreight,
Joe Drew, Wayne Mery, Alon Zakai, Christian Holler, Gary Kwong, Luke
Wagner, Terrence Cole, Timothy Nikkel, Bill McCloskey, and Nicolas Pierron
discovered multiple memory safety issues affecting Firefox. If the user
were tricked into opening a specially crafted page, an attacker could
possibly exploit these to cause a denial of service via application crash.
(CVE-2013-0783, CVE-2013-0784)

Atte Kettunen discovered that Firefox could perform an out-of-bounds read
while rendering GIF format images. An attacker could exploit this to crash
Firefox. (CVE-2013-0772)

Boris Zbarsky discovered that Firefox did not properly handle some wrapped
WebIDL objects. If the user were tricked into opening a specially crafted
page, an attacker could possibly exploit this to cause a denial of service
via application crash, or potentially execute code with the privileges of
the user invoking Firefox. (CVE-2013-0765)

Bobby Holley discovered vulnerabilities in Chrome Object Wrappers (COW) and
System Only Wrappers (SOW). If a user were tricked into opening a specially
crafted page, a remote attacker could exploit this to bypass security
protections to obtain sensitive information or potentially execute code
with the privileges of the user invoking Firefox. (CVE-2013-0773)

Frederik Braun discovered that Firefox made the location of the active
browser profile available to JavaScript workers. (CVE-2013-0774)

A use-after-free vulnerability was discovered in Firefox. An attacker could
potentially exploit this to execute code with the privileges of the user
invoking Firefox. (CVE-2013-0775)

Michal Zalewski discovered that Firefox would not always show the correct
address when cancelling a proxy authentication prompt. A remote attacker
could exploit this to conduct URL spoofing and phishing attacks.
(CVE-2013-0776)

Abhishek Arya discovered several problems related to memory handling. If
the user were tricked into opening a specially crafted page, an attacker
could possibly exploit these to cause a denial of service via application
crash, or potentially execute code with the privileges of the user invoking
Firefox. (CVE-2013-0777, CVE-2013-0778, CVE-2013-0779, CVE-2013-0780,
CVE-2013-0781, CVE-2013-0782)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.10:
firefox 19.0+build1-0ubuntu0.12.10.2

Ubuntu 12.04 LTS:
firefox 19.0+build1-0ubuntu0.12.04.2

Ubuntu 11.10:
firefox 19.0+build1-0ubuntu0.11.10.2

After a standard system update you need to restart Firefox to make all the
necessary changes.

References:
http://www.ubuntu.com/usn/usn-1729-2
http://www.ubuntu.com/usn/usn-1729-1
https://launchpad.net/bugs/1134409

Package Information:
https://launchpad.net/ubuntu/+source/firefox/19.0+build1-0ubuntu0.12.10.2
https://launchpad.net/ubuntu/+source/firefox/19.0+build1-0ubuntu0.12.04.2
https://launchpad.net/ubuntu/+source/firefox/19.0+build1-0ubuntu0.11.10.2




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