===================================================================== CERT-Renater Note d'Information No. 2013/VULN170 _____________________________________________________________________ DATE : 07/05/2013 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S) : Systems running IBM Notes versions 8.0.x, 8.5.x, 9.0. ====================================================================== http://www.kb.cert.org/vuls/id/912420 ______________________________________________________________________ Vulnerability Note VU#912420 IBM Notes runs arbitrary JAVA and Javascript in emails Original Release date: 30 avr. 2013 | Last revised: 03 mai 2013 Overview IBM Notes parses arbitrary JAVA and Javascript code by default when viewing emails. Description The n.runs AG security advisory states: Notes 8.5.3 does not filter tags inside HTML emails. This can be used to load arbitrary Java applets from remote sources (making it an information disclosure as well as this can be used to trigger an HTTP request once the mail is previewed/opened). Additional details may be found in the full n.runs AG security advisory. It should also be noted that the IBM JRE that comes with the latest patched version of IBM Notes is IBM JRE 6 SR12 while IBM JRE 6 SR13 has been released and includes many security related fixes. Impact A remote unauthenticated attack may be able to execute arbitrary code in the context of the user viewing emails within IBM Notes. Solution Apply an Update IBM's Security Bulletin states: The fix will be included in Interim Fix 1 for 8.5.3 Fix Pack 4 and 9.0 Interim Fix 1. The fix disables loading of JAVA applets for emails that originated from the Internet. Please consider the following workarounds if you are unable to upgrade. We also recommend all users implement the following workarounds if they do not have a need for JAVA & Javascript within Notes. The following directives should be set to zero in notes.ini to reduce the attack surface. •EnableJavaApplets=0 •EnableJavaScript=0 •EnableLiveConnect=0 Although not needed to mitigate this vulnerability, if plugins are not needed we recommend the following directive also be set to zero. •EnablePlugins=0 Alternatively, in Notes Basic Preferences, deselect the following three preferences: •Enable Java applets •Enable Java access from JavaScript •Enable JavaScript Vendor Information (Learn More) Vendor Status Date Notified Date Updated IBM Corporation Affected 19 Mar 2013 29 Apr 2013 If you are a vendor and your product is affected, let us know. CVSS Metrics (Learn More) Group Score Vector Base 5,8 AV:N/AC:M/Au:N/C:P/I:P/A:N Temporal 5,0 E:ND/RL:OF/RC:C Environmental 5,0 CDP:ND/TD:H/CR:ND/IR:ND/AR:ND References •https://www-304.ibm.com/support/docview.wss?uid=swg21633819 •https://www-304.ibm.com/connections/blogs/PSIRT/entry/security_bulletin_ibm_notes_accepts_java_applet_and_javascript_tags_inside_html_emails_cve_2013_0127_cve_2013_0538?lang=en_us •https://www.nruns.com/fileadmin/downloads/advisories/2013/n.runs-SA-2013.005-Lotus_Notes_Java_Applets.txt •http://seclists.org/fulldisclosure/2013/Apr/262 •http://www.ibm.com/developerworks/java/jdk/alerts/ Credit Thanks to Alexander Klink for reporting this vulnerability. This document was written by Jared Allar. Other Information CVE IDs: CVE-2013-0127 CVE-2013-0538 Date Public: 30 avr. 2013 Date First Published: 30 avr. 2013 Date Last Updated: 03 mai 2013 Document Revision: 40 Feedback If you have feedback, comments, or additional information about this vulnerability, please send us email. ====================================================================== ========================================================= Serveur de référence du CERT-Renater https://services.renater.fr/ssi/ ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 23 - 25 Rue Daviel | fax : 01-53-94-20-41 + + 75013 Paris | email: certsvp@renater.fr + =========================================================