Heimdal telnetd NULL dereference denial of service
| heimdal-telnetd-dos (24763) |  Low Risk |
Description:
Heimdal is vulnerable to a denial of service in the telnetd service, caused by a NULL pointer dereference. A remote attacker could exploit this vulnerability to cause the telnet server to crash.
*CVSS:
| Base Score: | 3.5 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Partial |
| Temporal Score: | 2.6 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Denial of Service
Remedy:
Upgrade to the latest version of Heimdal (0.7.2 or later) or (0.6.6 or later), available from the Heimdal Web page. See References.
For Ubuntu Linux:
Refer to USN-253-1 for patch or upgrade information. See References.
For Debian GNU/Linux:
Refer to DSA-977-1 for patch or upgrade information. See References.
For other distributions:
Contact your vendor for patch or upgrade information.
References:
- heimdal-announce Mailing List, Mon, 06 Feb 2006 16:49:56 +0100: Heimdal 0.7.2 and 0.6.6.
- BID-16676: Heimdal TelnetD Denial Of Service Vulnerability
- CVE-2006-0677: telnetd in Heimdal 0.6.x before 0.6.6 and 0.7.x before 0.7.2 allows remote unauthenticated attackers to cause a denial of service (server crash) via unknown vectors that trigger a null dereference.
- DSA-977: heimdal -- several vulnerabilities
- SUSE-SA:2006:011: heimdal remote denial of service
- USN-253-1: heimdal vulnerability
- VUPEN/ADV-2006-0456: Heimdal rshd and Telnet Privilege Escalation and Denial of Service Issues
Platforms Affected:
- Canonical Ubuntu 4.10
- Canonical Ubuntu 5.04
- Canonical Ubuntu 5.10
- Debian Debian Linux 3.1
- Heimdal Developers Heimdal prior to 0.6.6
- Heimdal Developers Heimdal prior to 0.7.2
- Novell UnitedLinux 1.0
- SuSE Linux Enterprise Server 8
- SUSE SuSE Linux 9.1
- SUSE SuSE Linux 9.2
- SuSE SuSE Linux Desktop 1.0
- SuSE SuSE SLES 9
Reported:
Feb 06, 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.