Serv-U Persistent Cleartext Password Transmission

2001-11-19T22:23:52
ID OSVDB:18716
Type osvdb
Reporter Fred Maxwell()
Modified 2001-11-19T22:23:52

Description

Vulnerability Description

The Serv-U FTP server contains a flaw that may lead to an unauthorized information disclosure. The issue is triggered when the server is configured to use S/KEY one-time password (OTP) authentication. An administrative client may ignore the S/KEY OTP challenge and instead transmit the password in cleartext, which will disclose authentication information resulting in a loss of confidentiality.

Solution Description

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.

Short Description

The Serv-U FTP server contains a flaw that may lead to an unauthorized information disclosure. The issue is triggered when the server is configured to use S/KEY one-time password (OTP) authentication. An administrative client may ignore the S/KEY OTP challenge and instead transmit the password in cleartext, which will disclose authentication information resulting in a loss of confidentiality.

References:

Vendor URL: http://www.rhinosoft.com/ Security Tracker: 1002882 ISS X-Force ID: 7925 CVE-2001-1463 CERT VU: 279763