Sun Solaris telnet authentication bypass
| solaris-telnet-authentication-bypass (32434) |  High Risk |
Description:
Sun Solaris could allow a remote attacker to bypass authentication, caused by an error in the telnet daemon (in.telnetd). A remote attacker could send a specially-crafted telnet login request to bypass authentication and gain unauthorized access to the system.
Note: Remote root login must be enabled to gain root privileges.
*CVSS:
| Base Score: | 8 |
| Access Vector: | Remote |
| Access Complexity: | High |
| Authentication: | Not Required |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 7 |
| Exploitability: | High |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Refer to Sun Alert ID: 102802 for upgrade or suggested workaround information. See References.
References:
- Full-Disclosure Mailing List, Mon Feb 12 2007 - 16:05:05 CST: Solaris telnet vulnberability - how many on your network?.
- Full-Disclosure Mailing List, Sat Feb 10 2007 - 22:59:56 CST: "0day was the case that they gave me".
- Security Sun Alert Feed, 28 Feb 2007: Solaris in.telnetd worm seen in the wild + inoculation script.
- Sun Alert ID: 102802: Security Vulnerability in the in.telnetd(1M) Daemon May Allow Unauthorized Remote Users to Gain Access to a Solaris Host.
- Sun Microsystems, Inc. Web site: Sun Microsystems.
- US-CERT Technical Cyber Security Alert TA07-059A: Sun Solaris Telnet Worm.
- ASA-2007-062: Security Vulnerability in the in.telnetd(1M) Daemon May Allow Unauthorized Remote Users to Gain Access to a Solaris Host
- BID-22512: Sun Solaris Telnet Remote Authentication Bypass Vulnerability
- CVE-2007-0882: Argument injection vulnerability in the telnet daemon (in.telnetd) in Solaris 10 and 11 (SunOS 5.10 and 5.11) misinterprets certain client -f sequences as valid requests for the login program to skip authentication, which allows remote attackers to log into certain accounts, as demonstrated by the bin account.
- SA24120: Sun Solaris "in.telnetd" Authentication Bypass
- SECTRACK ID: 1017625: Solaris in.telnetd Grants Access to Remote Users
- US-CERT VU#881872: Sun Solaris telnet authentication bypass vulnerability
- VUPEN/ADV-2007-0560: Sun Solaris Telnet Daemon Authentication Bypass Remote System Access Vulnerability
Platforms Affected:
- Sun Solaris 10 x86
- Sun Solaris 10 SPARC
Reported:
Feb 10, 2007
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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.