[USN-1368-1] Apache HTTP Server vulnerabilities
marc.deslauriers at canonical.com
Thu Feb 16 19:53:03 UTC 2012
Ubuntu Security Notice USN-1368-1
February 16, 2012
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS
Several security issues were fixed in the Apache HTTP Server.
- apache2: Apache HTTP server
It was discovered that the Apache HTTP Server incorrectly handled the
SetEnvIf .htaccess file directive. An attacker having write access to a
.htaccess file may exploit this to possibly execute arbitrary code.
Prutha Parikh discovered that the mod_proxy module did not properly
interact with the RewriteRule and ProxyPassMatch pattern matches in the
configuration of a reverse proxy. This could allow remote attackers to
contact internal webservers behind the proxy that were not intended for
external exposure. (CVE-2011-4317)
Rainer Canavan discovered that the mod_log_config module incorrectly
handled a certain format string when used with a threaded MPM. A remote
attacker could exploit this to cause a denial of service via a specially-
crafted cookie. This issue only affected Ubuntu 11.04 and 11.10.
It was discovered that the Apache HTTP Server incorrectly handled certain
type fields within a scoreboard shared memory segment. A local attacker
could exploit this to to cause a denial of service. (CVE-2012-0031)
Norman Hippert discovered that the Apache HTTP Server incorrecly handled
header information when returning a Bad Request (400) error page. A remote
attacker could exploit this to obtain the values of certain HTTPOnly
The problem can be corrected by updating your system to the following
Ubuntu 10.04 LTS:
Ubuntu 8.04 LTS:
In general, a standard system update will make all the necessary changes.
CVE-2011-3607, CVE-2011-4317, CVE-2012-0021, CVE-2012-0031,
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