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.
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
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.
Consequences:
Denial of Service
References:
- heimdal-announce Mailing List, Mon, 06 Feb 2006 16:49:56 +0100, Heimdal 0.7.2 and 0.6.6 at http://www.stacken.kth.se/lists/heimdal-discuss/2006-02/msg00028.html.
- 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
Reported:
Feb 06, 2006
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