{"vuid":"VU#951632","idnumber":"951632","name":"WebCalendar does not adequately validate user input","keywords":["Craig Knudsen","WebCalendar","PHP"],"overview":"WebCalendar does not properly validate user input, allowing attackers to execute arbitrary commands.","clean_desc":"WebCalendar is a free PHP application providing web calendar services for user groups. WebCalendar contains an unspecified input validation vulnerability, allowing arbitrary command execution by a malicious WebCalendar user. If WebCalendar is configured in \"single-user mode\" (a non-default configuration), attackers do not need a WebCalendar account to exploit this vulnerability.","impact":"Malicious users can execute arbitrary commands on the server.","resolution":"The CERT/CC is currently unaware of a practical solution to this problem.","workarounds":"An unofficial patch is available from Secure Reality: http://www.securereality.com.au/patches/WebCalendar-SecureReality.diff","sysaffected":"","thanks":"Thanks to Asher Glynn for reporting this vulnerability.","author":"This document was written by Shawn Van Ittersum.","public":["h","t","t","p",":","/","/","w","w","w",".","s","e","c","u","r","i","t","y","f","o","c","u","s",".","c","o","m","/","b","i","d","/","2","6","3","9"],"cveids":["CVE-2001-0477"],"certadvisory":"","uscerttechnicalalert":null,"datecreated":"2001-05-02T22:36:57Z","publicdate":"2001-04-23T00:00:00Z","datefirstpublished":"2002-09-26T21:58:25Z","dateupdated":"2002-09-26T21:58:32Z","revision":5,"vrda_d1_directreport":"","vrda_d1_population":"","vrda_d1_impact":"","cam_widelyknown":"15","cam_exploitation":"0","cam_internetinfrastructure":"4","cam_population":"4","cam_impact":"10","cam_easeofexploitation":"15","cam_attackeraccessrequired":"20","cam_scorecurrent":"4.275","cam_scorecurrentwidelyknown":"5.4","cam_scorecurrentwidelyknownexploited":"9.9","ipprotocol":"","cvss_accessvector":"","cvss_accesscomplexity":"","cvss_authentication":null,"cvss_confidentialityimpact":"","cvss_integrityimpact":"","cvss_availabilityimpact":"","cvss_exploitablity":null,"cvss_remediationlevel":"","cvss_reportconfidence":"","cvss_collateraldamagepotential":"","cvss_targetdistribution":"","cvss_securityrequirementscr":"","cvss_securityrequirementsir":"","cvss_securityrequirementsar":"","cvss_basescore":"","cvss_basevector":"","cvss_temporalscore":"","cvss_environmentalscore":"","cvss_environmentalvector":"","metric":4.275,"vulnote":null}