Objavljena je nadogradnja programskih paketa DHCP i glibc koja ispravlja višestruke sigurnosne nedostatke. Radi se o propustima koji napadačima omogućuju DoS napad, izvršavanje proizvoljnog programskog koda te stjecanje dodatnih sigurnosnih ovlasti.
Neki od ispravljenih nedostataka vezani su uz neodgovarajuću provjeru pojedinih mogućnosti unutar odgovora DHCP poslužitelja. Ranjivosti u paketu glibc vezani su uz nepravilnosti u datotekama "mntent_r.c", "dl-object.c" te "locale.c".
Posljedica:
Zlonamjerni korisnici mogu iskoristiti navedene nedostatke za proizvoljno pokretanje programskog koda, DoS napad te stjecanje dodatnih sigurnosnih ovlasti.
Rješenje:
Svim se korisnicima savjetuje primjena objavljene nadogradnje. Savjetuje se i detaljnije čitanje sigurnosnog upozorenja zbog podataka o budućim nadogradnjama.
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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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