ubuntu-security-announce Digest, Vol 106, Issue 5

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Today's Topics:

1. [USN-1904-1] libxml2 vulnerabilities (Marc Deslauriers)
2. [USN-1903-1] Apache HTTP Server vulnerabilities (Marc Deslauriers)


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Message: 1
Date: Mon, 15 Jul 2013 09:23:48 -0400
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1904-1] libxml2 vulnerabilities
Message-ID: <51E3F7E4.8090600@canonical.com>
Content-Type: text/plain; charset="utf-8"

==========================================================================
Ubuntu Security Notice USN-1904-1
July 15, 2013

libxml2 vulnerabilities
==========================================================================

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

- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in libxml2.

Software Description:
- libxml2: GNOME XML library

Details:

It was discovered that libxml2 would load XML external entities by default.
If a user or automated system were tricked into opening a specially crafted
document, an attacker could possibly obtain access to arbitrary files or
cause resource consumption. This issue only affected Ubuntu 10.04 LTS,
Ubuntu 12.04 LTS, and Ubuntu 12.10. (CVE-2013-0339)

It was discovered that libxml2 incorrectly handled documents that end
abruptly. If a user or automated system were tricked into opening a
specially crafted document, an attacker could possibly cause libxml2 to
crash, resulting in a denial of service. (CVE-2013-2877)

Update instructions:

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

Ubuntu 13.04:
libxml2 2.9.0+dfsg1-4ubuntu4.2

Ubuntu 12.10:
libxml2 2.8.0+dfsg1-5ubuntu2.3

Ubuntu 12.04 LTS:
libxml2 2.7.8.dfsg-5.1ubuntu4.5

Ubuntu 10.04 LTS:
libxml2 2.7.6.dfsg-1ubuntu1.9

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

References:
http://www.ubuntu.com/usn/usn-1904-1
CVE-2013-0339, CVE-2013-2877

Package Information:
https://launchpad.net/ubuntu/+source/libxml2/2.9.0+dfsg1-4ubuntu4.2
https://launchpad.net/ubuntu/+source/libxml2/2.8.0+dfsg1-5ubuntu2.3
https://launchpad.net/ubuntu/+source/libxml2/2.7.8.dfsg-5.1ubuntu4.5
https://launchpad.net/ubuntu/+source/libxml2/2.7.6.dfsg-1ubuntu1.9


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Message: 2
Date: Mon, 15 Jul 2013 09:23:24 -0400
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1903-1] Apache HTTP Server vulnerabilities
Message-ID: <51E3F7CC.1060300@canonical.com>
Content-Type: text/plain; charset="utf-8"

==========================================================================
Ubuntu Security Notice USN-1903-1
July 15, 2013

apache2 vulnerabilities
==========================================================================

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

- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in the Apache HTTP Server.

Software Description:
- apache2: Apache HTTP server

Details:

It was discovered that the mod_rewrite module incorrectly sanitized non-
printable characters before writing data to log files. A remote attacker
could possibly use this flaw to execute arbitrary commands by injecting
escape sequences in the log file. (CVE-2013-1862)

It was discovered that the mod_dav module incorrectly handled certain MERGE
requests. A remote attacker could use this issue to cause the server to
stop responding, resulting in a denial of service. (CVE-2013-1896)

Update instructions:

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

Ubuntu 13.04:
apache2.2-common 2.2.22-6ubuntu5.1

Ubuntu 12.10:
apache2.2-common 2.2.22-6ubuntu2.3

Ubuntu 12.04 LTS:
apache2.2-common 2.2.22-1ubuntu1.4

Ubuntu 10.04 LTS:
apache2.2-common 2.2.14-5ubuntu8.12

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

References:
http://www.ubuntu.com/usn/usn-1903-1
CVE-2013-1862, CVE-2013-1896

Package Information:
https://launchpad.net/ubuntu/+source/apache2/2.2.22-6ubuntu5.1
https://launchpad.net/ubuntu/+source/apache2/2.2.22-6ubuntu2.3
https://launchpad.net/ubuntu/+source/apache2/2.2.22-1ubuntu1.4
https://launchpad.net/ubuntu/+source/apache2/2.2.14-5ubuntu8.12


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