WebCalendar includes/user.php information disclosure
| webcalendar-user-information-disclosure (26262) |  Low Risk |
Description:
WebCalendar could allow a remote attacker to obtain sensitive information. The error messages returned for a failed login attempt contain information that could allow a remote attacker to determine valid usernames. Once a valid username is discovered, the attacker could use brute force techniques to gain access to the WebCalendar application.
Platforms Affected:
- Debian, Debian Linux 3.1
- SourceForge, WebCalendar 1.0.1
- SourceForge, WebCalendar 1.0.2
- SourceForge, WebCalendar 1.0.3
Remedy:
Upgrade to the latest version of WebCalendar (0.9.45-4sarge4 or later), available from the Debian Web site. See References.
Consequences:
Obtain Information
References:
- Full-Disclosure Mailing List, Thu May 04 2006 - 17:10:29 CDT, WebCalendar User Account Enumeration Weakness at http://archives.neohapsis.com/archives/fulldisclosure/2006-05/0074.html.
- WebCalendar Web site, Project: WebCalendar: Summary at http://sourceforge.net/projects/webcalendar/.
- BID-17853: WebCalendar Username Enumeration Vulnerability
- CVE-2006-2247: WebCalendar 1.0.1 to 1.0.3 generates different error messages depending on whether or not a username is valid, which allows remote attackers to enumerate valid usernames.
- DSA-1056: webcalendar -- verbose error message
- OSVDB ID: 25280: WebCalendar Login User Account Enumeration
- SA19974: WebCalendar User Account Enumeration Weakness
Reported:
May 04, 2006
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