CVE-2019-16182 (published 2019-09-09T21:15Z)

A reflected cross-site scripting (XSS) vulnerability was found in Limesurvey before 3.17.14 that allows remote attackers to inject arbitrary web script or HTML via extensions of uploaded files.

Severity: MEDIUM
CVSS v2 base score: 4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
CVSS v3 base score: 6.1, MEDIUM (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

Weakness information:
cwe_id: CWE-79
cwe_name: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
description: The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
extended_description: 
            Cross-site scripting (XSS) vulnerabilities occur when:
            
               Untrusted data enters a web application, typically from a web request.
               The web application dynamically generates a web page that contains this untrusted data.
               During page generation, the application does not prevent the data from containing content that is executable by a web browser, such as JavaScript, HTML tags, HTML attributes, mouse events, Flash, ActiveX, etc.
               A victim visits the generated web page through a web browser, which contains malicious script that was injected using the untrusted data.
               Since the script comes from a web page that was sent by the web server, the victim's web browser executes the malicious script in the context of the web server's domain.
               This effectively violates the intention of the web browser's same-origin policy, which states that scripts in one domain should not be able to access resources or run code in a different domain.
            
            There are three main kinds of XSS:
            
               
                  Type 1: Reflected XSS (or Non-Persistent) - 
         			The server reads data directly from the HTTP request and reflects it back in the HTTP response. Reflected XSS exploits occur when an attacker causes a victim to supply dangerous content to a vulnerable web application, which is then reflected back to the victim and executed by the web browser. The most common mechanism for delivering malicious content is to include it as a parameter in a URL that is posted publicly or e-mailed directly to the victim. URLs constructed in this manner constitute the core of many phishing schemes, whereby an attacker convinces a victim to visit a URL that refers to a vulnerable site. After the site reflects the attacker's content back to the victim, the content is executed by the victim's browser.
               
                  Type 2: Stored XSS (or Persistent) - 
               The application stores dangerous data in a database, message forum, visitor log, or other trusted data store. At a later time, the dangerous data is subsequently read back into the application and included in dynamic content. From an attacker's perspective, the optimal place to inject malicious content is in an area that is displayed to either many users or particularly interesting users. Interesting users typically have elevated privileges in the application or interact with sensitive data that is valuable to the attacker. If one of these users executes malicious content, the attacker may be able to perform privileged operations on behalf of the user or gain access to sensitive data belonging to the user. For example, the attacker might inject XSS into a log message, which might not be handled properly when an administrator views the logs.
            
               
                  Type 0: DOM-Based XSS - 
               In DOM-based XSS, the client performs the injection of XSS into the page; in the other types, the server performs the injection. DOM-based XSS generally involves server-controlled, trusted script that is sent to the client, such as Javascript that performs sanity checks on a form before the user submits it. If the server-supplied script processes user-supplied data and then injects it back into the web page (such as with dynamic HTML), then DOM-based XSS is possible.
            
            
            Once the malicious script is injected, the attacker can perform a variety of malicious activities. The attacker could transfer private information, such as cookies that may include session information, from the victim's machine to the attacker. The attacker could send malicious requests to a web site on behalf of the victim, which could be especially dangerous to the site if the victim has administrator privileges to manage that site. Phishing attacks could be used to emulate trusted web sites and trick the victim into entering a password, allowing the attacker to compromise the victim's account on that web site. Finally, the script could exploit a vulnerability in the web browser itself possibly taking over the victim's machine, sometimes referred to as "drive-by hacking."
            In many cases, the attack can be launched without the victim even being aware of it. Even with careful users, attackers frequently use a variety of methods to encode the malicious portion of the attack, such as URL encoding or Unicode, so the request looks less suspicious.
         
         

Fix information:
repo_url: https://github.com/LimeSurvey/LimeSurvey
commit_details: repo_url: https://github.com/LimeSurvey/LimeSurvey
author: lacrioque
author_date: 2019-09-02 10:43:10+02:00
msg: Release 3.17.14+190902
repository: repo_url: https://github.com/LimeSurvey/LimeSurvey
repo_name: LimeSurvey/LimeSurvey
description: The most popular FOSS online survey tool on the web.
repo_language: JavaScript
owner: LimeSurvey
file_changes: filename: version.php
change_type: ModificationType.MODIFY
diff: @@ -12,9 +12,9 @@
  */
 
 
-$config['versionnumber'] = '3.17.13';
+$config['versionnumber'] = '3.17.14';
 $config['dbversionnumber'] = 359;
 $config['buildnumber'] = '';
 $config['updatable'] = true;
-$config['assetsversionnumber'] = '30095';
+$config['assetsversionnumber'] = '30096';
 return $config;

programming_language: PHP
filename: release_notes.txt
change_type: ModificationType.MODIFY
diff: @@ -34,6 +34,46 @@ Thank you to everyone who helped with this new release!
 
 CHANGE LOG
 ------------------------------------------------------
+Changes from 3.17.13 (build 190824) to 3.17.14 (build 190902) September 2, 2019
+-Fixed issue: setting "Show header in answers export PDFs" not taken in account (LouisGac)
+-Fixed issue: [security]XSS in admin box buttons - kindly reported by Pavol Michalec & Frederik Koľbík (Carsten Schmitz)
+-Fixed issue: [security]XML breakout possible on export - kindly reported by Pavol Michalec & Frederik Koľbík (Carsten Schmitz)
+-Fixed issue: [security]X-Frame-Options SAMEORIGIN not set by default - kindly reported by Pavol Michalec & Frederik Koľbík (Carsten Schmitz)
+-Fixed issue: [security]User unaware that SSL encryption should be enforced (Carsten Schmitz)
+-Fixed issue: [security]Path revelation (Carsten Schmitz)
+-Fixed issue: [security]LDAP login non-generic login message - kindly reported by Pavol Michalec & Frederik Koľbík (Carsten Schmitz)
+-Fixed issue: [security]LDAP login non-generic login message - kindly reported by Pavol Michalec & Frederik Koľbík (Carsten Schmitz)
+-Fixed issue: [security]Equation signs are not masked by default on data export (Carsten Schmitz)
+-Fixed issue: [security]Equation signs are not masked by default on data export (Carsten Schmitz)
+-Fixed issue: [security]CSRF cookie missing HTTP only parameter- kindly reported by Pavol Michalec & Frederik Koľbík (Carsten Schmitz)
+-Fixed issue: [security]Admin user without permissions can still see plugins page - kindly reported by Pavol Michalec & Frederik Koľbík (Carsten Schmitz)
+-Fixed issue: [security]Admin user with settings permissions can can run integrity check - kindly reported by Pavol Michalec & Frederik Koľbík (Carsten Schmitz)
+-Fixed issue: [security]Admin user with limited permissions can view/update/delete reserved menu entries (Carsten Schmitz)
+-Fixed issue: [security]Admin user can mark other user notification as read (Carsten Schmitz)
+-Fixed issue: [security] Database backup uses browser cache (Carsten Schmitz)
+-Fixed issue: [security] Browser cache used for exports (Carsten Schmitz)
+-Fixed issue: [security] #15204: Stored XSS vulnerabilities - Thanks to J. Greil from the SEC Consult Vulnerability Lab (https://www.sec-consult.com) (Denis Chenu)
+-Fixed issue: [security] #15204: Reflected XSS vulnerabilities - thanks to J. Greil from  the  SEC  Consult Vulnerability Lab (Denis Chenu)
+-Fixed issue: Survey upload self-reflecting XSS (Carsten Schmitz)
+-Fixed issue: Sidebar not working on IE11 (lacrioque)
+-Fixed issue: Memory issues if too many responses exist for the same token in a non-anonymous survey (Carsten Schmitz)
+-Fixed issue: Memory issues if too many responses exist for the same token in a non-anonymous survey (Carsten Schmitz)
+-Fixed issue: LsTutorial only working in debug mode (lacrioque)
+-Fixed issue: Language not updated on import and overwrite in CPDB (lacrioque)
+-Fixed issue: JS error in firstStartTour onShow code (#1315) (Martin Unkel)
+-Fixed issue: After survey activation the ExpressionManager cache was not updated (Carsten Schmitz)
+-Fixed issue #15212: Survey navigation shows message "Please use the survey navigation buttons...[]" instead of navigating (Carsten Schmitz)
+-Fixed issue #15209: 500 error when try to save long administrator name (Denis Chenu)
+-Fixed issue #15208: MSSQL error on 2nd page of theme (Denis Chenu)
+-Fixed issue #15199: MSSQL : date/time question are not reloaded properly (Denis Chenu)
+-Fixed issue #15197: Submitting empty menu entry crashes application ( Application Denial of Service) (lacrioque)
+-Fixed issue #15194: Unable to remove page title from PDF generated at "print answers" screen (LouisGac)
+-Fixed issue #15192: entering html code inside the answeroptions for List type questions will break/alter the html for editing answers (Patrick Teichmann)
+-Fixed issue #15188: Access Label sets list (lacrioque)
+-Fixed issue #14863: Extending core theme using the same core theme name (Eddy Lackmann)
+-Fixed issue #10168: Commit test! Ignore (Carsten Schmitz)
+-New translation: Filipino (Carsten Schmitz)
+
 Changes from 3.17.12 (build 190823) to 3.17.13 (build 190824) August 24, 2019
 -Fixed issue #15185: Surveys with less or more then 4-6 digits will not display the sidepanel (Patrick Teichmann)
 

programming_language: Markdown