Flat Calendar calAdd.php and deleteEvent.php security bypass

flatcalendar-add-deleteevent-security-bypass (43039) The risk level is classified as MediumMedium Risk

Description:

Flat Calendar could allow a remote attacker to bypass security restrictions, caused by improper validation of user-supplied input. By sending a direct request to the calAdd.php or deleteEvent.php script using the eventNumber parameter, an attacker could exploit this vulnerability to add and delete events.

*CVSS:

Base Score: 5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: Partial
  Availability Impact: None
 
Temporal Score: 4.8
  Exploitability: High
  Remediation Level: Unavailable
  Report Confidence: Uncorroborated

Consequences:

Gain Access

Remedy:

No remedy available as of May 1, 2013.

References:

  • BugTraq Mailing List, Wed Jun 11 2008 - 09:08:21 CDT: Flat Calendar v1.1 Remote Permission Bypass Vulnerability.
  • Flat Calendar Web page: Flat Calendar - a Calendar and Event Book PHP script using a Flat File Database.
  • BID-29662: Flat Calendar Multiple Administrative Scripts Authentication Bypass Vulnerabilities
  • CVE-2008-6736: Flat Calendar 1.1 does not properly restrict access to administrative functions, which allows remote attackers to (1) add new events via calAdd.php, as reachable from admin/add.php, or (2) delete events via admin/deleteEvent.php. NOTE: this is only a vulnerability when the administrator does not follow recommendations in the product's security documentation.
  • OSVDB ID: 51506: Flat Calendar Admin Function Direct Request Authentication Bypass

Platforms Affected:

  • Flat Calendar Flat Calendar 1.1

Reported:

Jun 11, 2008

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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