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IBM SECURITY ADVISORY
First Issued: Wed Nov 20 13:06:27 CST 2013 |Updated: Wed Dec 4 10:00:31 CST 2013 |Update: Corrected CVSS scoring information for CVEs |Update: Includes AIX 5.3 in appropriate places
The most recent version of this document is available here:
VULNERABILITY: Security vulnerabilities in Perl for AIX
| PLATFORMS: 5.3, 6.1 and 7.1
SOLUTION: Apply the fix as described below.
THREAT: See below.
CVE Number: CVE-2012-5526 CVE-2013-1667
Reboot required? NO Workarounds? NO Protected by FPM? NO Protected by SED? NO =============================================================================== DETAILED INFORMATION
CVE-2012-5526 ------------- Perl does not properly escape newlines in (1) Set-Cookie or (2) P3P headers, which might allow remote attackers to inject arbitrary headers into responses from applications that use CGI.pm CVE-2013-1667 ------------- The rehash mechanism in Perl 5.8.2 through 5.16.x allows context-dependent attackers to cause a denial of service (memory consumption and crash) via a crafted hash key.
| CVE-2012-5526 | CVSS Base Score: 4.3 | CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/80098 for | the current score | CVSS Environmental Score*: Undefined | CVSS String: (AV:N/AC:M/Au:N/C:N/I:P/A:N)
| CVE-2013-1667 | CVSS Base Score: 4.3 | CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/82598 for the | current score | CVSS Environmental Score*: Undefined | CVSS String:(AV:N/AC:M/Au:N/C:N/I:N/A:P)
III. PLATFORM VULNERABILITY ASSESSMENT
To determine if your system is vulnerable, run the following command: # lslpp -l perl.rte The following fileset levels are vulnerable: AIX Fileset AIX Level Lower Level Upper Level ----------------------------------------------------------------
| perl.rte 5.3.12 188.8.131.52 184.108.40.206 perl.rte 6.1.7 220.127.116.11 18.104.22.168 perl.rte 6.1.8 22.214.171.124 126.96.36.199 perl.rte 7.1.1 188.8.131.52 184.108.40.206 perl.rte 7.1.2 220.127.116.11 18.104.22.168
NOTE: Affected customers are urged to upgrade to the latest applicable Technology Level and Service Pack.
A. APARS IBM has assigned the following APARs to this problem: AIX Level APAR number Availability ---------------------------------------------------
| 5.3.12 IV43973 NOW 6.1.8 IV43973 NOW 7.1.2 IV46765 NOW
Subscribe to the APARs here: http://www.ibm.com/support/docview.wss?uid=isg1IV43973 http://www.ibm.com/support/docview.wss?uid=isg1IV46765 By subscribing, you will receive periodic email alerting you to the status of the APAR, and a link to download the fix once it becomes available. B. FIXES Fixes are available. The fixes can be downloaded via http from: https://www14.software.ibm.com/webapp/iwm/web/preLogin.do?source=aixbp The perl name provided in the web pack site
| For 5.3: perl61.zip For 6.1: perl61.zip For 7.1: perl71.zip
To extract the fixes from the zip files:
| For 5.3: gunzip -S .zip perl61.zip For 6.1: gunzip -S .zip perl61.zip For 7.1: gunzip -S .zip perl71.zip
IMPORTANT: It is recommended that a mksysb backup of the system be created. Verify that this image is both bootable and readable before proceeding. To preview the fix installation: installp -apYd . perl To install the fix package: installp -aXYd . perl
There are no workarounds.
VI. CONTACT INFORMATION
If you would like to receive AIX Security Advisories via email, please visit: http://www.ibm.com/support/mynotifications To view previously issued advisories, please visit: http://www14.software.ibm.com/webapp/set2/subscriptions/onvdq Comments regarding the content of this announcement can be directed to: email@example.com To obtain the PGP public key that can be used to communicate securely with the AIX Security Team you can either: A. Send an email with "get key" in the subject line to: firstname.lastname@example.org B. Download the key from our web page: http://www.ibm.com/systems/resources/systems_p_os_aix_security_pgpkey.txt C. Download the key from a PGP Public Key Server. The key ID is: 0x28BFAA12 Please contact your local IBM AIX support center for any assistance. eServer is a trademark of International Business Machines Corporation. IBM, AIX and pSeries are registered trademarks of International Business Machines Corporation. All other trademarks are property of their respective holders.
IBM discovered and fixed this vulnerability as part of its commitment to secure the AIX operating system.
Complete CVSS Guide: http://www.first.org/cvss/cvss-guide.html On-line Calculator V2: http://nvd.nist.gov/cvss.cfm?calculator&adv&version=2
| X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/80098 | X-Force Vulnerability Database: http://xforce.iss.net/xforce/xfdb/82598 CVE-2012-5526: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5526 CVE-2013-1667: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1667
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Flash. Note: According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
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