Ubuntu 1368-1: Apache HTTP Server vulnerabilities

    Date16 Feb 2012
    Posted ByLinuxSecurity Advisories
    Several security issues were fixed in the Apache HTTP Server.
    Ubuntu Security Notice USN-1368-1
    February 16, 2012
    apache2 vulnerabilities
    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.
    Software Description:
    - 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
    cookies. (CVE-2012-0053)
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 11.10:
      apache2.2-common                2.2.20-1ubuntu1.2
    Ubuntu 11.04:
      apache2.2-common                2.2.17-1ubuntu1.5
    Ubuntu 10.10:
      apache2.2-common                2.2.16-1ubuntu3.5
    Ubuntu 10.04 LTS:
      apache2.2-common                2.2.14-5ubuntu8.8
    Ubuntu 8.04 LTS:
      apache2.2-common                2.2.8-1ubuntu0.23
    In general, a standard system update will make all the necessary changes.
      CVE-2011-3607, CVE-2011-4317, CVE-2012-0021, CVE-2012-0031,
    Package Information:
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