[USN-1903-1] Apache HTTP Server vulnerabilities

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==========================================================================
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