Ubuntu Security Notice 1903-1 - 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. 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. Various other issues were also addressed.
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Ubuntu Security Notice USN-1903-1
July 15, 2013
apache2 vulnerabilities
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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