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Document ID:	57657
Title:	Document ID 57657
Synopsis:	Security Vulnerability When Using LDAP In Conjunction With RBAC
Update Date:	2004-10-18

Description

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Sun(sm) Alert Notification

Sun Alert ID: 57657
Synopsis: Security Vulnerability When Using LDAP In Conjunction With RBAC
Category: Security
Product: Solaris
BugIDs: 4966423
Avoidance: Patch, Workaround
State: Resolved
Date Released: 18-Oct-2004
Date Closed: 18-Oct-2004
Date Modified:

1. Impact On systems where Lightweight Directory Access Protocol (LDAP, see ldap(1)) is used in conjunction with Role Based Access Control (RBAC, see rbac(5)), unprivileged local users may have the ability to execute certain commands with "superuser" (root) privileges.

2. Contributing Factors This issue can occur in the following releases:

SPARC Platform

Solaris 8 without patch 108993-38
Solaris 9 without patch 112960-17

x86 Platform

Solaris 8 without patch 108994-38
Solaris 9 without patch 114328-04

Notes:

Systems are only impacted when using LDAP in conjunction with RBAC .
Solaris 7 is not affected by this issue.

This configuration can be determined by the RBAC related entries in the "/etc/nsswitch.conf" file, which will contain lines with one or more of the following type of entries:

    auth_attr: ldap files
    prof_attr: ldap files
    user_attr: ldap files

3. Symptoms There are no predictable symptoms that would indicate the described issue has been exploited.

Solution Summary

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4. Relief/Workaround To work around the described issue, configure the system to use "local" files instead of LDAP for RBAC configuration. RBAC related entries in the "/etc/nsswitch.conf" file should be modified as follows:

    auth_attr: files
    prof_attr: files
    user_attr: files

Note: With this workaround, LDAP functionality will be disabled for the RBAC database and all RBAC related data will be queried from "local" files instead of through LDAP.

5. Resolution This issue is addressed in the following releases:

SPARC Platform

Solaris 8 with patch 108993-38 or later
Solaris 9 with patch 112960-17 or later

x86 Platform

Solaris 8 with patch 108994-38 or later
Solaris 9 with patch 114328-04 or later

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