{"vuid":"VU#405075","idnumber":"405075","name":"Microsoft Windows 2000 Telnet Service fails to reject oversized username input values","keywords":["Microsoft Windows 2000","telnet service","denial of service","DoS","malformed logon command","4300 characters","input buffer","ASCII code 127","0x7F","0x41414141","MS01-031"],"overview":"The Microsoft Windows 2000 Telnet Service contains a denial-of-service vulnerability that allows remote attackers to disrupt the telnet service on affected servers.","clean_desc":"The Microsoft Windows 2000 Telnet Service contains a vulnerability in the section of code that performs range checking on incoming telnet session requests. By sending a large sequence of characters, the delete character (ASCII 0x7F), and an additional sequence of characters, it is possible to crash the Telnet Service.","impact":"This vulnerability allows a remote attacker to crash the Telnet Service, resulting in a denial-of-service condition.","resolution":"Apply a patch from your vendor Microsoft has released a patch for this vulnerability; for further information, please consult the systems affected section below.","workarounds":"","sysaffected":"","thanks":"","author":"This document was written by Jeffrey P. Lanza and is based on information provided by Microsoft and the BindView Razor Team.","public":["http://www.microsoft.com/technet/security/bulletin/MS01-031.asp","http://www.microsoft.com/Downloads/Release.asp?ReleaseID=30508","http://www.securityfocus.com/bid/2838"],"cveids":["CVE-2001-0348"],"certadvisory":"","uscerttechnicalalert":null,"datecreated":"2001-06-13T13:03:39Z","publicdate":"2001-06-07T00:00:00Z","datefirstpublished":"2001-09-18T22:16:06Z","dateupdated":"2001-09-18T23:27:13Z","revision":11,"vrda_d1_directreport":"","vrda_d1_population":"","vrda_d1_impact":"","cam_widelyknown":"20","cam_exploitation":"10","cam_internetinfrastructure":"5","cam_population":"15","cam_impact":"7","cam_easeofexploitation":"20","cam_attackeraccessrequired":"20","cam_scorecurrent":"27.5625","cam_scorecurrentwidelyknown":"27.5625","cam_scorecurrentwidelyknownexploited":"35.4375","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":27.5625,"vulnote":null}