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Multiple Vulnerabilities in Pixelpost

Advisory ID:HTB22791
Product:Pixelpost
Vendor:Pixelpost
Vulnerable Versions:1.7.3 and probably prior
Tested Version:1.7.3
Advisory Publication:January 11, 2011 [without technical details]
Vendor Notification:January 11, 2011
Public Disclosure:January 25, 2011
Vulnerability Type:Cross-Site Scripting [CWE-79]
Path Traversal [CWE-22]
Risk Level:Medium
CVSSv2 Base Scores:4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
5 (AV:N/AC:L/Au:N/C:P/I:N/A:N)
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered multiple vulnerabilities in Pixelpost which could be exploited to perform cross-site scripting attacks and disclose potentially sensitive information.

1) Cross-site scripting vulnerability in Pixelpost
The vulnerability exists due to input sanitation error in the "visitorinfo" cookie in index.php. A remote attacker can send a specially crafted HTTP request to the vulnerable script and execute arbitrary HTML and script code in user`s browser in context of the vulnerable website.
Exploitation example:
GET /index.php?popup=comment&showimage=1 HTTP/1.1
Cookie: visitorinfo=1'><script>alert("XSS")%3B</script>%25


2) Information disclosure vulnerability in Pixelpost
The vulnerability exists due to insufficient sanitation of input data in the "lang" in index.php. A remote attacker can read arbitrary files on the target system. Successful exploitation requires that register_globals is enabled.
Exploitation example:
GET /index.php?popup=comment&language_full=english HTTP/1.1
Cookie: lang=/../../../includes/pixelpost.php%00

How to Detect Cross-Site Scripting Vulnerabilities
Website Security Test
  • GDPR & PCI DSS Test
  • Website CMS Security Test
  • CSP & HTTP Headers Check
  • WordPress & Drupal Scanning
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Solution:
Currently we are not aware of any vendor-supplied patches or other solutions. The vendor was contacted in accordance to our Vendor Notification Policy but we didn't get any answer or feedback.


References:
[1] High-Tech Bridge Advisory HTB22791 - https://www.immuniweb.com/advisory/HTB22791 - Multiple Vulnerabilities in Pixelpost
[2] Pixelpost - pixelpost.org - Pixelpost is an open-source, standards-compliant, multi-lingual, fully extensible photoblog application for the web.
[3] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.

Have additional information to submit?
Please feel free to send us any additional information related to this Advisory, such as vulnerable versions, additional exploitation details and conditions, patches and other relevant details.
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