Horde contains a flaw that may lead to an unauthorized information disclosure. The issue is due to go.php not properly sanitizing user input supplied to the 'url' variable. Embedding a NULL character within the 'url' variable enables an attacker to control the variable passed to readfile() function leading to the reading of any file on the file system with the privileges of the web server resulting in a loss of confidentiality.
Classification
Location:
Remote / Network Access
Attack Type:
Input Manipulation
Impact:
Loss of Confidentiality
Solution:
Upgrade
Exploit:
Exploit Public
Disclosure:
OSVDB Verified,
Vendor Verified
OSVDB:
Web Related
Solution
Upgrade to version 3.1 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.