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.
*CVSS:
| Base Score: | 5.4 |
| Access Vector: | Remote |
| Access Complexity: | High |
| Authentication: | Not Required |
| Confidentiality Impact: | Partial |
| Integrity Impact: | None |
| Availability Impact: | Complete |
| Temporal Score: | 4 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Apply Apple Security Update 2006-007, available from the Apple Web site. See References.
References:
- Apple Security Update 2006-007: About the security content of Security Update 2006-007.
- 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
Platforms Affected:
- Apple Mac OS X 10.3.9
Reported:
Nov 28, 2006
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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.