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Security Advisory Important: autofs security update

Advisory: RHSA-2007:1128-6
Type: Security Advisory
Severity: Important
Issued on: 2007-12-12
Last updated on: 2007-12-12
Affected Products: Red Hat Enterprise Linux (v. 5 server)
Red Hat Enterprise Linux Desktop (v. 5 client)
Red Hat Enterprise Linux EUS (v. 5.1.z server)
CVEs (cve.mitre.org): CVE-2007-5964

Details

Updated autofs packages are now available to fix a security flaw for Red
Hat Enterprise Linux 5.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

The autofs utility controls the operation of the automount daemon, which
automatically mounts and unmounts file systems after a period of
inactivity.

There was a security issue with the default installed configuration of
autofs version 5 whereby the entry for the "hosts" map did not specify the
"nosuid" mount option. A local user with control of a remote nfs server
could create a setuid root executable within an exported filesystem on the
remote nfs server that, if mounted using the default hosts map, would allow
the user to gain root privileges. (CVE-2007-5964)

Due to the fact that autofs always mounted hosts map entries suid by
default, autofs has now been altered to always use the "nosuid" option when
mounting from the default hosts map. The "suid" option must be explicitly
given in the master map entry to revert to the old behavior. This change
affects only the hosts map which corresponds to the /net entry in the
default configuration.

Users are advised to upgrade to these updated autofs packages, which
resolve this issue.

Red Hat would like to thank Josh Lange for reporting this issue.


Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

Updated packages

Red Hat Enterprise Linux (v. 5 server)

IA-32:
autofs-5.0.1-0.rc2.55.el5.1.i386.rpm
File outdated by:  RHBA-2013:1350
    MD5: 29d9a96e22d453a52c3cb6b2663bd984
 
IA-64:
autofs-5.0.1-0.rc2.55.el5.1.ia64.rpm
File outdated by:  RHBA-2013:1350
    MD5: 8abb97c8cd6ad16e67780c6d4251ded3
 
PPC:
autofs-5.0.1-0.rc2.55.el5.1.ppc.rpm
File outdated by:  RHBA-2013:1350
    MD5: 780aa280f5927f34506acd60353bf0fc
 
s390x:
autofs-5.0.1-0.rc2.55.el5.1.s390x.rpm
File outdated by:  RHBA-2013:1350
    MD5: 37a973950e8683cbaf4b47caa2458ffb
 
x86_64:
autofs-5.0.1-0.rc2.55.el5.1.x86_64.rpm
File outdated by:  RHBA-2013:1350
    MD5: 234de8994b5e122cff78e9655e19d510
 
Red Hat Enterprise Linux Desktop (v. 5 client)

IA-32:
autofs-5.0.1-0.rc2.55.el5.1.i386.rpm
File outdated by:  RHBA-2013:1350
    MD5: 29d9a96e22d453a52c3cb6b2663bd984
 
x86_64:
autofs-5.0.1-0.rc2.55.el5.1.x86_64.rpm
File outdated by:  RHBA-2013:1350
    MD5: 234de8994b5e122cff78e9655e19d510
 
Red Hat Enterprise Linux EUS (v. 5.1.z server)

IA-32:
autofs-5.0.1-0.rc2.55.el5.1.i386.rpm
File outdated by:  RHBA-2008:0099
    MD5: 29d9a96e22d453a52c3cb6b2663bd984
 
IA-64:
autofs-5.0.1-0.rc2.55.el5.1.ia64.rpm
File outdated by:  RHBA-2008:0099
    MD5: 8abb97c8cd6ad16e67780c6d4251ded3
 
PPC:
autofs-5.0.1-0.rc2.55.el5.1.ppc.rpm
File outdated by:  RHBA-2008:0099
    MD5: 780aa280f5927f34506acd60353bf0fc
 
s390x:
autofs-5.0.1-0.rc2.55.el5.1.s390x.rpm
File outdated by:  RHBA-2008:0099
    MD5: 37a973950e8683cbaf4b47caa2458ffb
 
x86_64:
autofs-5.0.1-0.rc2.55.el5.1.x86_64.rpm
File outdated by:  RHBA-2008:0099
    MD5: 234de8994b5e122cff78e9655e19d510
 
(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

410031 - CVE-2007-5964 autofs defaults don't restrict suid in /net


References



These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:
https://www.redhat.com/security/team/key/#package

The Red Hat security contact is secalert@redhat.com. More contact details at http://www.redhat.com/security/team/contact/