Apple Mac OS X ftp server login denial of service
| macos-ftp-server-login-dos (30621) |  Medium Risk |
Description:
Apple Mac OS X ftp server is vulnerable to a denial of service, caused by improper handling of a failed login attempt with a valid username. If FTP Access is enabled, a remote attacker could exploit this vulnerability to enumerate valid usernames or cause the FTP server to crash.
Platforms Affected:
- Apple, Mac OS X 10.3.9
Remedy:
Apply Apple Security Update 2006-007, available from the Apple Web site. See References.
Consequences:
Denial of Service
References:
- Apple Security Update 2006-007, About the security content of Security Update 2006-007 at http://docs.info.apple.com/article.html?artnum=304829.
- BID-21335: Apple Mac OS X 2006-007 Multiple Security Vulnerabilities
- CVE-2006-4403: The FTP server in Apple Mac OS X 10.4.8 and earlier, when FTP Access is enabled, will crash when a login failure occurs with a valid user name, which allows remote attackers to cause a denial of service (crash) and enumerate valid usernames.
- OSVDB ID: 30734: Mac OS X ftpd Valid Login Remote DoS
- SA23155: Mac OS X Security Update Fixes Multiple Vulnerabilities
- SECTRACK ID: 1017303: Mac OS X ftpd Discloses Valid User Account Names to Remote Users
- US-CERT VU#371648: Apple Mac OS X ftpd may allow arbitrary users to determine account name validity
- VUPEN/ADV-2006-4750: Apple Mac OS X Multiple Command Execution and Denial of Service Vulnerabilities
Reported:
Nov 28, 2006
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