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                                   CERT-Renater

                        Note d'Information No. 2009/VULN028
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DATE                      : 16/01/2009

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Solaris 8, Solaris 9, Solaris 10, running
                             Apache 1.3 mod_perl Component "PerlRun.pm".

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http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-248386-1
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   Solution Type: Sun Alert
   Solution  248386 :   Security vulnerability in Solaris Related to the
   Apache 1.3 mod_perl(3) Module Component "PerlRun.pm" may Lead to
   Denial of Service (DoS)
   Bug ID: 6738158

   Product
   Solaris 8 Operating System
   Solaris 9 Operating System
   Solaris 10 Operating System

   Date of Workaround Release: 14-Jan-2009

   SA Document Body
   Security vulnerability in Solaris related to the Apache 1.3 mod_perl(3)
   module component "PerlRun.pm" may lead to Denial of Service (DoS):

   1. Impact
   A security vulnerability in Solaris related to the Apache HTTP server
   may affect the Apache 1.3 web server bundled with Solaris 8, 9 and 10
   . The vulnerability, a Denial of Service(DoS) in the "RunPerl.pm"
   component of the mod_perl(3) Apache server module, may allow a remote
   unprivileged user to cause a Denial of Service to the Apache "httpd"
   process.
   Additional information regarding this issue is available at:
     * CVE-2007-1349 at:
       http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1349

   2. Contributing Factors
   This issue can occur in the following releases:
   SPARC Platform
     * Solaris 8
     * Solaris 9
     * Solaris 10 without patch 122911-14
     * OpenSolaris based upon builds snv_01 through snv_99

   x86 Platform
     * Solaris 8
     * Solaris 9
     * Solaris 10 without patch 122912-14
     * OpenSolaris based upon builds snv_01 through snv_99

   Note 1: OpenSolaris distributions may include additional bug fixes
   above and beyond the build from which it was derived.  To determine
   the base build of OpenSolaris, the following command can be used:
    $ uname -v
    snv_86

   Note 2:  A system is only vulnerable to this issue if the Apache 1.3
   web server has been configured and is running on the system.
   To determine if the Apache 1.3 web server is running on the system,
   the following command can be used:
    $ /usr/bin/ps -ef | grep "/usr/apache/bin/http"
    nobody 103892 102307 0 Jan 20 ? 0:27 /usr/apache/bin/httpd

   Note 3: This vulnerability only affects systems which make use of the
   Apache Server mod_perl(3) (PerlRun.pm) component.
   To determine if the "PerlRun.pm" component is used, a command such as
   the following can be run for all configuration files that define the
   running Apache 1.3 configuration:
    $ grep PerlHandler /etc/apache/httpd.conf | grep Apache::PerlRun
    PerlHandler Apache::PerlRun

   3. Symptoms
   If the issue is exploited, the Apache 1.3 web server may be
   unresponsive, possibly consuming all available CPU resources. Commands
   such as prstat(1M) can be used to determine the utilization of system
   resources:
    $ prstat -s cpu
    [...]

   4. Workaround
   To work around the described issue, make sure that the mod_perl(3)
   (PerlRun.pm) component is not configured in the Apache 1.3
   "httpd.conf" file.

   5. Resolution
   This issue is addressed in the following releases:
   SPARC Platform
     * Solaris 10 with patch 122911-14 or later
     * OpenSolaris based upon build snv_100 or later

   x86 Platform
     * Solaris 10 with patch 122912-14 or later
     * OpenSolaris based upon build snv_100 or later

   A final resolution is pending completion.
   For more information on Security Sun Alerts, see Technical
   Instruction ID 213557.

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