Uočeno je nekoliko sigurnosnih nedostataka programskih paketa glibc i dhcp, a zlonamjerni korisnici ih mogu iskoristiti za povećanje ovlasti, pokretanje proizvoljnih naredbi i izvođenje napada uskraćivanja usluge.
Paket:
dhcp 3.x, dhcp 4.x, glibc 2.x, VMware ESX Server 3.x, VMware ESX Server 4.x
Neki od nedostataka su uzrokovani nepravilnim rukovanjem znakovima za novi redak u "encode_name", neodgovarajućim oblikovanjem izlazne vrijednosti u datoteci "locale/programs/locale.c" te cjelobrojnim prepisivanjem u datoteci "posix/fnmatch.c".
Posljedica:
Nedostatke mogu iskoristiti lokalni ili udaljeni napadači kako bi povećali svoje ovlasti, pokretali proizvoljne naredbe ili izveli DoS (eng. Denial of Service) napad.
Rješenje:
Informacije o ostalim nedostacima mogu se naći u izvornoj preporuci. Svi korisnici se potiču na korištenje najnovijih inačica.
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VMware Security Advisory
Advisory ID: VMSA-2011-0010.1
Synopsis: VMware ESX third party updates for Service Console
packages glibc and dhcp
Issue date: 2011-07-28
Updated on: 2011-09-19
CVE numbers: CVE-2010-0296 CVE-2011-0536 CVE-2011-0997 CVE-2011-1071
CVE-2011-1095 CVE-2011-1658 CVE-2011-1659
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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-2011-1095, CVE-2011-1071, CVE-2011-1658 and CVE-2011-1659 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-285-20110719-831
016/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
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1658
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1659
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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.
2011-09-19 VMSA-2011-0010.1
Updated security advisory with the CVE identifiers CVE-2011-1658 and
CVE-2011-1659 that where erroneously left out from the initial version
of the advisory. There is no change to the patch content.
- ------------------------------------------------------------------------
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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