(VMware Issues Fix for ESX) ISC DHCP Meta-Character Filtering Flaw in dhclient Lets Remote Users Execute Arbitrary Code

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                        VMware Security Advisory

Advisory ID:    VMSA-2011-0010
Synopsis:       VMware ESX third party updates for Service Console
                packages glibc and dhcp
Issue date:     2011-07-28
Updated on:     2011-07-28 (initial release of advisory)
CVE numbers:    CVE-2010-0296 CVE-2011-0536 CVE-2011-0997 CVE-2011-1071
                CVE-2011-1095
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1. Summary

    ESX Service Console OS (COS) updates to remediate vulnerabilities in
    glibc and dhcp.

2. Relevant releases

    ESX 4.1 without patches ESX410-201107405-SG and
                            ESX410-201107406-SG.

3. Problem Description

    a. Service Console update for DHCP

        The DHCP client daemon, dhclient, does not properly sanatize
        certain options in DHCP server replies. An attacker could send a
        specially crafted DHCP server reply, that is saved on
	the client system and evaluated by a process that assumes the
	option is trusted. This could lead to arbitrary code execution
	with the privileges of the evaluating process.

        The Common Vulnerabilities and Exposures project (cve.mitre.org)
        has assigned the name CVE-2011-0997 to this issue.

        Column 4 of the following table lists the action required to
        remediate the vulnerability in each release, if a solution is
        available.

        VMware      Product     Running     Replace with/
        Product     Version     on          Apply Patch
        =========   ========    =======     =================
        vCenter     any         Windows     not affected

        hosted*     any         any         not affected

        ESXi        any         any         not affected

        ESX         4.1         ESX         ESX410-201107405-SG
        ESX         4.0         ESX         patch pending
        ESX         3.5         ESX         patch pending
        ESX         3.0.3       ESX         affected, no patch planned

        * hosted products are VMware Workstation, Player, ACE, Fusion.

    b. Service Console update for glibc

        This patch updates the glibc package for ESX service console to
        glibc-2.5-58.el5_6.2. This fixes multiple security issues in
        glibc, glibc-common and nscd including possible local privilege
        escalation.

        The Common Vulnerabilities and Exposures project
        (cve.mitre.org) has assigned the identifiers CVE-2010-0296,
        CVE-2011-0536, CVE-2011-0997 and CVE-2011-1071 to these issues.

        Column 4 of the following table lists the action required to
        remediate the vulnerability in each release, if a solution is
        available.

        VMware      Product     Running     Replace with/
        Product     Version     on          Apply Patch
        =========   ========    =======     =================
        vCenter     any         Windows     not affected

        hosted*     any         any         not affected

        ESXi        any         ESXi        not affected

        ESX         4.1         ESX         ESX410-201107406-SG
        ESX         4.0         ESX         patch pending
        ESX         3.5         ESX         patch pending
        ESX         3.0.3       ESX         affected, no patch planned

        * hosted products are VMware Workstation, Player, ACE, Fusion.


4. Solution
    Please review the patch/release notes for your product and version
    and verify the checksum of your downloaded file.

    VMware ESX 4.1
    -------
    ESX410-201107001
    Download link:

https://hostupdate.vmware.com/software/VUM/OFFLINE/release-285-20110719-831016/ESX410-201107001.zip
    md5sum: 5db911b51bd45fa4fbd710cf2111c20e
    sha1sum: 6b1ca691133b56b74f12cecac6409062c5d1efbf
    http://kb.vmware.com/kb/2000612

    ESX410-201107001 contains ESX410-201107405-SG and
    ESX410-201107406-SG.

5. References

    CVE numbers
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0296
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0536
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0997
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1071
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1095

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6. Change log
    2011-07-28 VMSA-2011-0010
    Initial security advisory in conjunction with the release of ESX 4.1
    patches on 2011-07-28.

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7. Contact

E-mail list for product security notifications and announcements:
http://lists.vmware.com/cgi-bin/mailman/listinfo/security-announce

This Security Advisory is posted to the following lists:

  * security-announce at lists.vmware.com
  * bugtraq at securityfocus.com
  * full-disclosure at lists.grok.org.uk

E-mail:  security at vmware.com
PGP key at: http://kb.vmware.com/kb/1055

VMware Security Advisories
http://www.vmware.com/security/advisories

VMware security response policy
http://www.vmware.com/support/policies/security_response.html

General support life cycle policy
http://www.vmware.com/support/policies/eos.html

VMware Infrastructure support life cycle policy
http://www.vmware.com/support/policies/eos_vi.html

Copyright 2011 VMware Inc.  All rights reserved.
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