Heimdal Kerberos 5 implementation kf/kfd buffer overflow
| heimdal-kf-kfd-bo (10116) |  High Risk |
Description:
Heimdal is vulnerable to several buffer overflows in the kf and kfd daemons, which are used to forward Kerberos authentication credentials. By passing malformed user and file information to a vulnerable client, a remote attacker could overflow a buffer and execute arbitrary code on the system with root privileges.
Consequences:
Gain Access
Remedy:
Upgrade to the latest version of Heimdal (0.5 or later), available from the Heimdal Web page. See References.
For SuSE Linux:
Upgrade to the latest heimdal package, as listed below. Refer to SuSE Security Announcement SuSE-SA:2002:034 for more information. See References.
SuSE Linux: 8.0 (Intel): 0.4e-191 or later
SuSE Linux: 7.3 (Intel): 0.4d-132 or later
SuSE Linux: 7.2 (Intel): 0.3e-83 or later
SuSE Linux: 7.3 (Sparc): 0.4d-67 or later
SuSE Linux: 7.3 (PPC): 0.4d-113 or later
For NetBSD:
Refer to NetBSD Security Advisory 2002-018 for upgrade or workaround information. See References.
For Gentoo Linux:
Upgrade to the latest app-crypt/heimdal package, as listed in Gentoo Linux Security Announcement 2002-10-14 15:30 UTC. See References.
For Debian GNU/Linux:
Upgrade to the latest heimdal package, as listed below. Refer to DSA 178-1 for more information. See References.
Debian GNU/Linux 2.2: 0.2l-7.4 or later
Denian GNU/Linux 3.0: 0.4e-7.woody.4 or later
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- Gentoo Linux Security Announcement 2002-10-14 15:30 UTC: heimdal.
- Heimdal Web site: Heimdal.
- NetBSD Security Advisory 2002-018: Multiple security isses with kfd daemon.
- BID-5729: Heimdal Kerberos Forwarding Daemon File Overwriting Vulnerability
- BID-5731: Heimdal Kerberos Forwarding Daemon Zero Terminated String Passing Buffer Overflow Vulnerability
- CVE-2002-1225: Multiple buffer overflows in Heimdal before 0.5, possibly in both the (1) kadmind and (2) kdc servers, may allow remote attackers to gain root access.
- DSA-178: heimdal -- remote command execution
- OSVDB ID: 4899: Heimdal Kerberos Forwarding Daemon Arbitrary File Overwrite
- OSVDB ID: 5616: Heimdal Kerberos kadmind Multiple Buffer Overflows
Platforms Affected:
- Debian Debian Linux 2.2
- Debian Debian Linux 3.0
- Heimdal Developers Heimdal prior to 0.5
- NetBSD NetBSD 1.5.1
- NetBSD NetBSD 1.5.2
- NetBSD NetBSD 1.5.3
- NetBSD NetBSD 1.6
- NetBSD NetBSD CURRENT
- Novell SuSE Linux Enterprise Server 7.0
- SuSE SuSE eMail Server III
- SUSE SuSE Linux 7.2
- SUSE SuSE Linux 7.3
- SUSE SuSE Linux 8.0
- SuSE SuSE Linux Connectivity Server
- SuSE SuSE Linux Office Server
Reported:
Sep 17, 2002
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