Thycotic Secret Server 8.8.000004 – Persistent Cross-Site Scripting

• Exploit Database
• 16 阅读

• 作者： Marco Delai
  日期： 2015-06-26
• 类别：

  • webapps
  平台：

  • multiple
• 来源：https://www.exploit-db.com/exploits/37394/

• #############################################################
  #
  # COMPASS SECURITY ADVISORY
  # http://www.csnc.ch/en/downloads/advisories.html
  #
  #############################################################
  #
  # CVE ID : CVE-2015-3443
  # Product: Secret Server [1]
  # Vendor: Thycotic
  # Subject: Stored Cross-Site Scripting Vulnerability (XSS)
  # Risk:High
  # Effect: Remotely exploitable
  # Author: Marco Delai (marco.delai@csnc.ch)
  # Date: June 24th 2015
  #
  #############################################################
  
  
  Introduction:
  -------------
  Thycotic Secret Server enterprise password management software allows 
  the creation, management and control of critical passwords in one 
  centralized, web-based repository [1]. 
  
  The identified vulnerability (stored Cross-Site Scripting) allows the 
  execution of JavaScript code in the browser of a valid user when it 
  toggle the password mask on a specially crafted password. This allows, 
  for example, an attacker to prepare a specially crafted shared password, 
  which when read by another user, can steal all other passwords the 
  victim has access to. 
  
  
  Vulnerable:
  -----------
  Secret Server customers on version 8.6.000000 to 8.8.000004 [2]. 
  
  
  Technical Details
  --------------------
  Exploiting the vulnerability simply requires to:
  1. Create a new password entry within Secret Server with the following
   value: "Compass Security<script>alert("Compass Security")</script>"
  2. Open the basic dashboard and toggle the password mask. The password 
   is retrieved from the server using an AJAX call and its value is 
   added straight to the page's DOM without validation. Thus, the 
   script included in step 1 is executed. 
  
  Note that the payload defined in step 1 did only get executed in the 
  basic dashboard view. The advanced dashboard did adequately encode the
  password. Extract of the vulnerable page: 
  
  GET
  /SecretServer/api.ashx/simplehome/GetSecretItemValue?secretItemId=[...]&audi
  tAction=unmask HTTP/1.1
  
  HTTP/1.1 200 OK
  Cache-Control: no-cache, no-store, must-revalidate
  Pragma: no-cache
  Content-Length: 62
  Content-Type: application/json; charset=utf-8
  Expires: -1
  [...]
  Content-Security-Policy: connect-src 'self'; font-src 'self';
  frame-src 'self' sslauncher:; img-src 'self' data:; media-src 'self';
  object-src 'self'; style-src 'self' 'unsafe-inline'; script-src 'self'
  'unsafe-inline' 'unsafe-eval'
  X-Content-Security-Policy: connect-src 'self'; font-src 'self';
  frame-src 'self' sslauncher:; img-src 'self' data:; media-src 'self';
  object-src 'self'; style-src 'self' 'unsafe-inline'; script-src 'self'
  'unsafe-inline' 'unsafe-eval'
  X-Content-Type-Options: nosniff
  X-XSS-Protection: 1; mode=block
  X-UA-Compatible: IE=edge
  
  "Compass Security<script>alert(\"Compass Security\")</script>"
  
  
  Remediation:
  ------------
  Update Secret Server to the latest version, which fixes the
  vulnerability [2]. 
  
  
  Milestones:
  -----------
  2015-02-19 Vulnerability discovered
  2015-02-20 Vulnerability reported to vendor
  2015-02-20 Vendor patch [2]
  2015-06-24 Public disclosure
  
  
  References:
  -----------
  [1] http://thycotic.com/products/secret-server/
  [2]
  http://thycotic.com/products/secret-server/resources/advisories/thy-ss-004/