Red Hat Enterprise Linux autofs hosts map weak security
| autofs-hostsmap-weak-security (39188) |  Low Risk |
Description:
autofs running on Red Hat Enterprise Linux could provide weaker than expected security. The host map configuration file does not include to nodev mount option. By creating special device files on a remote NFS server, a local attacker could exploit this vulnerability to access restricted system devices.
Platforms Affected:
- Autofs, autofs 5
- MandrakeSoft, Mandrake Linux 2007 X86_64
- MandrakeSoft, Mandrake Linux 2007
- MandrakeSoft, Mandrake Linux 2007.1 X86_64
- MandrakeSoft, Mandrake Linux 2007.1
- MandrakeSoft, Mandrake Linux 2008.0 X86_64
- MandrakeSoft, Mandrake Linux 2008.0
- RedHat, Enterprise Linux 4 WS
- RedHat, Enterprise Linux 4 ES
- RedHat, Enterprise Linux 4 AS
- RedHat, Enterprise Linux 4 Desktop
- RedHat, Enterprise Linux 5 Client
- RedHat, Enterprise Linux 5
Remedy:
Apply the appropriate update for your system. See References.
Consequences:
Gain Privileges
References:
- Red Hat Bugzilla Bug 426218, CVE-2007-6285 autofs default doesn't set nodev in /net at https://bugzilla.redhat.com/show_bug.cgi?id=426218.
- ASA-2008-009: autofs5 security update (RHSA-2007-1177)
- BID-26970: autofs nodev Mount Option Privilege Escalation Vulnerability
- CVE-2007-6285: The default configuration for autofs 5 (autofs5) in some Linux distributions, such as Red Hat Enterprise Linux (RHEL) 4 and 5, does not specify the nodev mount option for the -hosts map, which allows local users to access important devices by operating a remote NFS server and creating special device files on that server, as demonstrated by the /dev/mem device.
- MDVSA-2008:009: Updated autofs packages fix insecure hosts configuration
- MDVSA-2008:009-1: Updated autofs packages fix insecure hosts configuration
- RHSA-2007-1176: Important: autofs security update
- RHSA-2007-1177: Important: autofs5 security update
- SA28156: Red Hat autofs "nodev" Security Bypass Vulnerability
- SECTRACK ID: 1019137: autofs Lets Local Users Gain Elevated Privileges
Reported:
Dec 19, 2007
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