Caldera OpenServer insecure X sessions
| openserver-x-session-insecure (16113) |  Medium Risk |
Description:
SCO OpenServer could provide insecure X sessions, caused by the X authorization protocol (Xauthority) not being available unless sessions are started by scologin. A remote attacker, from a host within the host access control list, could use this vulnerability gain unauthorized access to an X session.
Consequences:
Gain Access
Remedy:
For SCO OpenServer 5.0.5, 5.0.6, and 5.0.7:
Upgrade to the appropriate fixed binaries, as listed in SCO Security Advisory SCOSA-2004.5. See References.
References:
- Full-Disclosure Mailing List, Mon May 10 2004 - 19:18:29 CDT: OpenServer 5.0.5 OpenServer 5.0.6 OpenServer 5.0.7 : X sessions which are not started by scologin cannot use the X authorization protocol.
- SCO Security Advisory SCOSA-2004.5: OpenServer 5.0.5 OpenServer 5.0.6 OpenServer 5.0.7 : X sessions which are not started by scologin cannot use the X authorization protocol.
- CVE-2004-0390: SCO OpenServer 5.0.5 through 5.0.7 only supports Xauthority style access control when users log in using scologin, which allows remote attackers to gain unauthorized access to an X session via other X login methods.
Platforms Affected:
- SCO Caldera OpenServer 5.0.5
- SCO Caldera OpenServer 5.0.6
- SCO Caldera OpenServer 5.0.7
Reported:
May 11, 2004
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