ubuntu-security-announce Digest, Vol 93, Issue 17

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Today's Topics:

1. [USN-1485-1] AccountsService vulnerability (Marc Deslauriers)
2. [USN-1484-1] PyCrypto vulnerability (Marc Deslauriers)


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Message: 1
Date: Thu, 28 Jun 2012 14:35:13 -0400
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1485-1] AccountsService vulnerability
Message-ID: <1340908513.15995.1.camel@mdlinux>
Content-Type: text/plain; charset="utf-8"

==========================================================================
Ubuntu Security Notice USN-1485-1
June 28, 2012

accountsservice vulnerability
==========================================================================

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

- Ubuntu 12.04 LTS
- Ubuntu 11.10

Summary:

AccountsService could be made to read arbitrary files as the administrator.

Software Description:
- accountsservice: query and manipulate user account information

Details:

Florian Weimer discovered that AccountsService incorrectly handled
privileges when copying certain files to the system cache directory. A
local attacker could exploit this issue to read arbitrary files, bypassing
intended permissions.

Update instructions:

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

Ubuntu 12.04 LTS:
accountsservice 0.6.15-2ubuntu9.1
libaccountsservice0 0.6.15-2ubuntu9.1

Ubuntu 11.10:
accountsservice 0.6.14-1git1ubuntu1.2
libaccountsservice0 0.6.14-1git1ubuntu1.2

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

References:
http://www.ubuntu.com/usn/usn-1485-1
CVE-2012-2737

Package Information:
https://launchpad.net/ubuntu/+source/accountsservice/0.6.15-2ubuntu9.1
https://launchpad.net/ubuntu/+source/accountsservice/0.6.14-1git1ubuntu1.2


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Message: 2
Date: Thu, 28 Jun 2012 14:34:38 -0400
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1484-1] PyCrypto vulnerability
Message-ID: <1340908478.15995.0.camel@mdlinux>
Content-Type: text/plain; charset="utf-8"

==========================================================================
Ubuntu Security Notice USN-1484-1
June 28, 2012

python-crypto vulnerability
==========================================================================

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

- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS

Summary:

PyCrypto improperly created ElGamal encryption keys.

Software Description:
- python-crypto: cryptographic algorithms and protocols for Python

Details:

It was discovered that PyCrypto produced inappropriate prime numbers when
generating ElGamal keys. An attacker could use this flaw to facilitate
brute-forcing of ElGamal encryption keys.

Update instructions:

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

Ubuntu 12.04 LTS:
python-crypto 2.4.1-1ubuntu0.1

Ubuntu 11.10:
python-crypto 2.3-2ubuntu0.1

Ubuntu 11.04:
python-crypto 2.1.0-2ubuntu1.1

Ubuntu 10.04 LTS:
python-crypto 2.0.1+dfsg1-4ubuntu2.2

In general, a standard system update will make all the necessary changes.
If PyCrypto was used to generate ElGamal keys, we recommend they be
regenerated.

References:
http://www.ubuntu.com/usn/usn-1484-1
CVE-2012-2417

Package Information:
https://launchpad.net/ubuntu/+source/python-crypto/2.4.1-1ubuntu0.1
https://launchpad.net/ubuntu/+source/python-crypto/2.3-2ubuntu0.1
https://launchpad.net/ubuntu/+source/python-crypto/2.1.0-2ubuntu1.1
https://launchpad.net/ubuntu/+source/python-crypto/2.0.1+dfsg1-4ubuntu2.2


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End of ubuntu-security-announce Digest, Vol 93, Issue 17
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