ID

VAR-201104-0082

CVE

CVE-2011-0997

TITLE

ISC dhclient vulnerability

DESCRIPTION

dhclient in ISC DHCP 3.0.x through 4.2.x before 4.2.1-P1, 3.1-ESV before 3.1-ESV-R1, and 4.1-ESV before 4.1-ESV-R2 allows remote attackers to execute arbitrary commands via shell metacharacters in a hostname obtained from a DHCP message, as demonstrated by a hostname that is provided to dhclient-script. The ISC dhclient contains a vulnerability that could allow a remote attacker to execute arbitrary code on the client machine. Apple From Apple Time Capsule and AirPort Base Station (802.11n) Firmware update for has been released.Crafted DHCP Any command may be executed by processing the response. A remote attacker can exploit this issue through a rogue DHCP server. Additionally for Corporate Server 4 and Enterprise Server 5 ISC DHCP has been upgraded from the 3.0.7 version to the 4.1.2-P1 version which brings many enhancements such as better ipv6 support. Packages for 2009.0 are provided as of the Extended Maintenance Program. _______________________________________________________________________ References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0997 http://ftp.isc.org/isc/dhcp/dhcp-4.1.2-P1-RELNOTES https://www.isc.org/software/dhcp/advisories/cve-2011-0997 _______________________________________________________________________ Updated Packages: Mandriva Linux 2009.0: 0fe2b147ebdba8b68f69ddc27160db5c 2009.0/i586/dhcp-client-4.1.2-0.4mdv2009.0.i586.rpm f4ee7090da2bec5cb4482f2fa21beb8b 2009.0/i586/dhcp-common-4.1.2-0.4mdv2009.0.i586.rpm a4a5bd2f2d8f4d40a4c60d5dde55307c 2009.0/i586/dhcp-devel-4.1.2-0.4mdv2009.0.i586.rpm 814bc88e335fb03901f326300ae92961 2009.0/i586/dhcp-doc-4.1.2-0.4mdv2009.0.i586.rpm ec52571bb8002e9394b1eb6e6fc95b64 2009.0/i586/dhcp-relay-4.1.2-0.4mdv2009.0.i586.rpm e7fed43b5db92babf8ca3acbd7210b7f 2009.0/i586/dhcp-server-4.1.2-0.4mdv2009.0.i586.rpm 18489ac449e257f1fa9aad9e7a054b45 2009.0/SRPMS/dhcp-4.1.2-0.4mdv2009.0.src.rpm Mandriva Linux 2009.0/X86_64: b557459f67de2b8ec481d313d9a26cb2 2009.0/x86_64/dhcp-client-4.1.2-0.4mdv2009.0.x86_64.rpm b4ea7a9670866fff6cd3f4eb77073a84 2009.0/x86_64/dhcp-common-4.1.2-0.4mdv2009.0.x86_64.rpm 4f9a9c9a9815697e17a65b942771e31d 2009.0/x86_64/dhcp-devel-4.1.2-0.4mdv2009.0.x86_64.rpm df18345c665846817880f815af0ad0e8 2009.0/x86_64/dhcp-doc-4.1.2-0.4mdv2009.0.x86_64.rpm eac313ff664e3ea9f8e4c3818d7b7387 2009.0/x86_64/dhcp-relay-4.1.2-0.4mdv2009.0.x86_64.rpm 48cca35591072588de0e1b9f00ca88eb 2009.0/x86_64/dhcp-server-4.1.2-0.4mdv2009.0.x86_64.rpm 18489ac449e257f1fa9aad9e7a054b45 2009.0/SRPMS/dhcp-4.1.2-0.4mdv2009.0.src.rpm Mandriva Linux 2010.0: 88ba2b9d0ccfddf8b1b6f516851d08ce 2010.0/i586/dhcp-client-4.1.2-0.4mdv2010.0.i586.rpm 1475209ee7b9fb9b7f26ad5b20afcdcf 2010.0/i586/dhcp-common-4.1.2-0.4mdv2010.0.i586.rpm ea29d2bfd21b02a56057cd36dc21f43a 2010.0/i586/dhcp-devel-4.1.2-0.4mdv2010.0.i586.rpm 067c3ac4f7530e447f82bbe4326253a3 2010.0/i586/dhcp-doc-4.1.2-0.4mdv2010.0.i586.rpm 409516cfb0004d5f4522040b81433ce7 2010.0/i586/dhcp-relay-4.1.2-0.4mdv2010.0.i586.rpm a23871dfa6632571cdf4a2559941ad89 2010.0/i586/dhcp-server-4.1.2-0.4mdv2010.0.i586.rpm 265c9ec68af7e23baf8b1b6fcc4cc64f 2010.0/SRPMS/dhcp-4.1.2-0.4mdv2010.0.src.rpm Mandriva Linux 2010.0/X86_64: 403dfe148141d926bc2f5e31c18360ba 2010.0/x86_64/dhcp-client-4.1.2-0.4mdv2010.0.x86_64.rpm 2cd0331b9935442a68d606e1d58b0608 2010.0/x86_64/dhcp-common-4.1.2-0.4mdv2010.0.x86_64.rpm 80a31ea430793ce9d2269c9d31aa03bd 2010.0/x86_64/dhcp-devel-4.1.2-0.4mdv2010.0.x86_64.rpm d5053dc644215e70dfc5380afdbc90c4 2010.0/x86_64/dhcp-doc-4.1.2-0.4mdv2010.0.x86_64.rpm 377fe3099561dd0a795617977164b91f 2010.0/x86_64/dhcp-relay-4.1.2-0.4mdv2010.0.x86_64.rpm 57b98ba8696c7a7d20ab96a823f4ff0d 2010.0/x86_64/dhcp-server-4.1.2-0.4mdv2010.0.x86_64.rpm 265c9ec68af7e23baf8b1b6fcc4cc64f 2010.0/SRPMS/dhcp-4.1.2-0.4mdv2010.0.src.rpm Mandriva Linux 2010.1: 5b603213aa47a9772cf786ae6ee046da 2010.1/i586/dhcp-client-4.1.2-0.4mdv2010.2.i586.rpm 3046be07aaa09d1b39fcc8c07ef25e58 2010.1/i586/dhcp-common-4.1.2-0.4mdv2010.2.i586.rpm 1b5a481f6db0b53e666884cfda6ac44c 2010.1/i586/dhcp-devel-4.1.2-0.4mdv2010.2.i586.rpm 279beab531b59a715c946a00bd58fc48 2010.1/i586/dhcp-doc-4.1.2-0.4mdv2010.2.i586.rpm a328ab24b56f1ac03f8f420acd0a3806 2010.1/i586/dhcp-relay-4.1.2-0.4mdv2010.2.i586.rpm f7c61c55748270add2fe45d3245895c8 2010.1/i586/dhcp-server-4.1.2-0.4mdv2010.2.i586.rpm 30d4e8965d393765fb98b425889df126 2010.1/SRPMS/dhcp-4.1.2-0.4mdv2010.2.src.rpm Mandriva Linux 2010.1/X86_64: 27f78c74028b1ea64dbd596c05cfa83f 2010.1/x86_64/dhcp-client-4.1.2-0.4mdv2010.2.x86_64.rpm ab56614386900415fecba15f4c17db13 2010.1/x86_64/dhcp-common-4.1.2-0.4mdv2010.2.x86_64.rpm 535a2eb4b6a4b1f78f47201e0b4249c3 2010.1/x86_64/dhcp-devel-4.1.2-0.4mdv2010.2.x86_64.rpm 64e9bac6fe8f4dbee3e1aebd5d91e977 2010.1/x86_64/dhcp-doc-4.1.2-0.4mdv2010.2.x86_64.rpm 612892e71f2aeddfd8b55cd7ac220247 2010.1/x86_64/dhcp-relay-4.1.2-0.4mdv2010.2.x86_64.rpm 9bb46bca8de30ee4b99bfe09867a3924 2010.1/x86_64/dhcp-server-4.1.2-0.4mdv2010.2.x86_64.rpm 30d4e8965d393765fb98b425889df126 2010.1/SRPMS/dhcp-4.1.2-0.4mdv2010.2.src.rpm Corporate 4.0: f49d86732da26402b022b2d980049c03 corporate/4.0/i586/dhcp-client-4.1.2-0.4.20060mlcs4.i586.rpm acd985bc51c25cc42325befb357b0dcc corporate/4.0/i586/dhcp-common-4.1.2-0.4.20060mlcs4.i586.rpm c01506a802e46af23c8f10a72c6a0eb2 corporate/4.0/i586/dhcp-devel-4.1.2-0.4.20060mlcs4.i586.rpm 81522530fa5e97057d6eeea18ad7bec3 corporate/4.0/i586/dhcp-doc-4.1.2-0.4.20060mlcs4.i586.rpm 2ebfdf7ee9224b7403c4ab5e8370d9ab corporate/4.0/i586/dhcp-relay-4.1.2-0.4.20060mlcs4.i586.rpm c2bbacf8934b9e3dc78cdb49cd811ec9 corporate/4.0/i586/dhcp-server-4.1.2-0.4.20060mlcs4.i586.rpm ac3031a0c5dfeb6274aa28d669e66cba corporate/4.0/SRPMS/dhcp-4.1.2-0.4.20060mlcs4.src.rpm Corporate 4.0/X86_64: 2747bf835e111141b9a91dc320eeab43 corporate/4.0/x86_64/dhcp-client-4.1.2-0.4.20060mlcs4.x86_64.rpm 0c998112346a5da94e09d55c996d6dff corporate/4.0/x86_64/dhcp-common-4.1.2-0.4.20060mlcs4.x86_64.rpm fd38ef505da0c593ef900895abeb1ddc corporate/4.0/x86_64/dhcp-devel-4.1.2-0.4.20060mlcs4.x86_64.rpm 69b3d6cbf21c46828de40a322fd1310d corporate/4.0/x86_64/dhcp-doc-4.1.2-0.4.20060mlcs4.x86_64.rpm c5acb788ae76e674952d656fa9b0d1a5 corporate/4.0/x86_64/dhcp-relay-4.1.2-0.4.20060mlcs4.x86_64.rpm e19db50139a291a7acd23491af5f8d54 corporate/4.0/x86_64/dhcp-server-4.1.2-0.4.20060mlcs4.x86_64.rpm ac3031a0c5dfeb6274aa28d669e66cba corporate/4.0/SRPMS/dhcp-4.1.2-0.4.20060mlcs4.src.rpm Mandriva Enterprise Server 5: 7cbe686b047a6fd6f95cda44669e5862 mes5/i586/dhcp-client-4.1.2-0.4mdvmes5.2.i586.rpm af8b9fe15591b76c11f2257e0cb43a37 mes5/i586/dhcp-common-4.1.2-0.4mdvmes5.2.i586.rpm 2a22a53e6de1a9333c36c5cc250c5ac4 mes5/i586/dhcp-devel-4.1.2-0.4mdvmes5.2.i586.rpm 9ca551145fc79919000a61419e72de37 mes5/i586/dhcp-doc-4.1.2-0.4mdvmes5.2.i586.rpm e9faa5fae712882720b107eb02e51f1f mes5/i586/dhcp-relay-4.1.2-0.4mdvmes5.2.i586.rpm 8568f3bac9dd6654b63ebee94c33275e mes5/i586/dhcp-server-4.1.2-0.4mdvmes5.2.i586.rpm 0e5415cf40dde2931cd1b81aada5e7f7 mes5/SRPMS/dhcp-4.1.2-0.4mdvmes5.2.src.rpm Mandriva Enterprise Server 5/X86_64: 87ae497e9b94fb842718b4fbefb55474 mes5/x86_64/dhcp-client-4.1.2-0.4mdvmes5.2.x86_64.rpm 71d70558972e1f0729513fce69183de2 mes5/x86_64/dhcp-common-4.1.2-0.4mdvmes5.2.x86_64.rpm 0f12150d87816bd1770388d8dc309d21 mes5/x86_64/dhcp-devel-4.1.2-0.4mdvmes5.2.x86_64.rpm 0450f2a86dab4988d1c96a8e9747104f mes5/x86_64/dhcp-doc-4.1.2-0.4mdvmes5.2.x86_64.rpm 6a043f417310b6229e8fb8d967c12a8d mes5/x86_64/dhcp-relay-4.1.2-0.4mdvmes5.2.x86_64.rpm e4281f48c410412f60fd33f095b9199c mes5/x86_64/dhcp-server-4.1.2-0.4mdvmes5.2.x86_64.rpm 0e5415cf40dde2931cd1b81aada5e7f7 mes5/SRPMS/dhcp-4.1.2-0.4mdvmes5.2.src.rpm _______________________________________________________________________ To upgrade automatically use MandrivaUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you. All packages are signed by Mandriva for security. You can obtain the GPG public key of the Mandriva Security Team by executing: gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98 You can view other update advisories for Mandriva Linux at: http://www.mandriva.com/security/advisories If you want to report vulnerabilities, please contact security_(at)_mandriva.com _______________________________________________________________________ Type Bits/KeyID Date User ID pub 1024D/22458A98 2000-07-10 Mandriva Security Team <security*mandriva.com> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iD8DBQFNotZnmqjQ0CJFipgRAsarAJ4zitKb2D4e53sOLX4vqvuPs5tLCACffyPE Y8Ya7GFbhILVKuKTG+Ps+3k= =EXBX -----END PGP SIGNATURE----- _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/ . Depending on the script and OS, this can result in execution of exploit code on the client. CVSS Score: 6.8 (AV:A/AC:L/Au:N/C:P/I:N/A:C) For more information on CVSS scores, visit http://nvd.nist.gov/cvss.cfm?calculator&adv&version=2 Workarounds: On SUSE systems, it is possible to disable hostname update by setting DHCLIENT_SET_HOSTNAME="no" in /etc/sysconfig/network/dhcp. Other systems may add following line to dhclient-script at the beginning of the set_hostname() function: new_host_name=${new_host_name//[^-.a-zA-Z0-9]/} In environments where filters/acls can be put into place to limit clients to accessing only legitimate dhcp servers, this will protect clients from rogue dhcp servers deliberately trying to exploit this bug. However, this will not protect from compromised servers. Active exploits: None known at this time. https://www.isc.org/downloads/all No patch is available for 4.0.x as it is EOL. Anyone running 4.1.x should upgrade to 4.1-ESV-R2. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201301-06 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: ISC DHCP: Denial of Service Date: January 09, 2013 Bugs: #362453, #378799, #393617, #398763, #428120, #434880 ID: 201301-06 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities have been found in ISC DHCP, the worst of which may allow remote Denial of Service. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/dhcp < 4.2.4_p2 >= 4.2.4_p2 Description =========== Multiple vulnerabilities have been discovered in ISC DHCP. Please review the CVE identifiers referenced below for details. Resolution ========== All ISC DHCP users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/dhcp-4.2.4_p2" References ========== [ 1 ] CVE-2011-0997 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0997 [ 2 ] CVE-2011-2748 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2748 [ 3 ] CVE-2011-2749 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2749 [ 4 ] CVE-2011-4539 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4539 [ 5 ] CVE-2011-4868 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4868 [ 6 ] CVE-2012-3570 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3570 [ 7 ] CVE-2012-3571 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3571 [ 8 ] CVE-2012-3954 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3954 [ 9 ] CVE-2012-3955 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3955 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201301-06.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org. License ======= Copyright 2013 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5 . Release Date: 2012-03-20 Last Updated: 2012-03-20 Potential Security Impact: Remote execution of arbitrary code, Denial of Service (DoS) Source: Hewlett-Packard Company, HP Software Security Response Team VULNERABILITY SUMMARY Potential security vulnerabilities have been identified with HP Insight Control Software for Linux (IC-Linux). References: CVE-2011-3210, CVE-2011-3207, CVE-2011-1097, CVE-2011-0997, CVE-2011-0762, CVE-2010-4645 SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed. HP Insight Control Software for Linux (IC-Linux) before v7.0 BACKGROUND CVSS 2.0 Base Metrics =========================================================== Reference Base Vector Base Score CVE-2011-3210 (AV:N/AC:L/Au:N/C:N/I:N/A:P) 5.0 CVE-2011-3207 (AV:N/AC:L/Au:N/C:N/I:P/A:N) 5.0 CVE-2011-1097 (AV:N/AC:H/Au:N/C:P/I:P/A:P) 5.1 CVE-2011-0997 (AV:N/AC:L/Au:N/C:P/I:P/A:P) 7.5 CVE-2011-0762 (AV:N/AC:L/Au:S/C:N/I:N/A:P) 4.0 CVE-2010-4645 (AV:N/AC:L/Au:N/C:N/I:N/A:P) 5.0 =========================================================== Information on CVSS is documented in HP Customer Notice: HPSN-2008-002 RESOLUTION HP has provided HP Insight Control Software for Linux (IC-Linux) v7.0 to resolve the vulnerabilities. IC-Linux v7.0 is available here: http://h18004.www1.hp.com/products/servers/management/insightcontrol_linux2/index.html HISTORY Version:1 (rev.1) - 20 March 2012 Initial release Third Party Security Patches: Third party security patches that are to be installed on systems running HP software products should be applied in accordance with the customer's patch management policy. Support: For issues about implementing the recommendations of this Security Bulletin, contact normal HP Services support channel. For other issues about the content of this Security Bulletin, send e-mail to security-alert@hp.com. Report: To report a potential security vulnerability with any HP supported product, send Email to: security-alert@hp.com Subscribe: To initiate a subscription to receive future HP Security Bulletin alerts via Email: http://h41183.www4.hp.com/signup_alerts.php?jumpid=hpsc_secbulletins Security Bulletin List: A list of HP Security Bulletins, updated periodically, is contained in HP Security Notice HPSN-2011-001: https://h20566.www2.hp.com/portal/site/hpsc/public/kb/docDisplay/?docId=emr_na-c02964430 Security Bulletin Archive: A list of recently released Security Bulletins is available here: http://h20566.www2.hp.com/portal/site/hpsc/public/kb/secBullArchive/ Software Product Category: The Software Product Category is represented in the title by the two characters following HPSB. 3C = 3COM 3P = 3rd Party Software GN = HP General Software HF = HP Hardware and Firmware MP = MPE/iX MU = Multi-Platform Software NS = NonStop Servers OV = OpenVMS PI = Printing and Imaging PV = ProCurve ST = Storage Software TU = Tru64 UNIX UX = HP-UX Copyright 2012 Hewlett-Packard Development Company, L.P. Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The information provided is provided "as is" without warranty of any kind. To the extent permitted by law, neither HP or its affiliates, subcontractors or suppliers will be liable for incidental,special or consequential damages including downtime cost; lost profits;damages relating to the procurement of substitute products or services; or damages for loss of data, or software restoration. The information in this document is subject to change without notice. Hewlett-Packard Company and the names of Hewlett-Packard products referenced herein are trademarks of Hewlett-Packard Company in the United States and other countries. Other product and company names mentioned herein may be trademarks of their respective owners. This issue is addressed by stripping shell meta-characters in dhclient-script. It is recommended that AirPort Utility 5.5.3 or later be installed before upgrading to Firmware version 7.6. These options are reused in an insecure fashion by dhclient scripts. For the oldstable distribution (lenny), this problem has been fixed in version 3.1.1-6+lenny5. For the stable (squeeze), testing (wheezy) and unstable (sid) distributions, this problem has been fixed in an additional update for isc-dhcp. ========================================================================== Ubuntu Security Notice USN-1108-2 April 19, 2011 dhcp3 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 10.10 - Ubuntu 10.04 LTS - Ubuntu 9.10 Summary: An attacker's DHCP server could send crafted responses to your computer and cause it to run programs as root. Due to an error, the patch to fix the vulnerability was not properly applied on Ubuntu 9.10 and higher. Original advisory details: Sebastian Krahmer discovered that the dhclient utility incorrectly filtered crafted responses. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 10.10: dhcp3-client 3.1.3-2ubuntu6.2 Ubuntu 10.04 LTS: dhcp3-client 3.1.3-2ubuntu3.2 Ubuntu 9.10: dhcp3-client 3.1.2-1ubuntu7.3 In general, a standard system update will make all the necessary changes. ---------------------------------------------------------------------- Q1 Factsheets released: http://secunia.com/resources/factsheets/2011_vendor/ ---------------------------------------------------------------------- TITLE: ISC DHCP "dhclient" Response Processing Input Sanitation Vulnerability SECUNIA ADVISORY ID: SA44037 VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/44037/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=44037 RELEASE DATE: 2011-04-07 DISCUSS ADVISORY: http://secunia.com/advisories/44037/#comments AVAILABLE ON SITE AND IN CUSTOMER AREA: * Last Update * Popularity * Comments * Criticality Level * Impact * Where * Solution Status * Operating System / Software * CVE Reference(s) http://secunia.com/advisories/44037/ ONLY AVAILABLE IN CUSTOMER AREA: * Authentication Level * Report Reliability * Secunia PoC * Secunia Analysis * Systems Affected * Approve Distribution * Remediation Status * Secunia CVSS Score * CVSS https://ca.secunia.com/?page=viewadvisory&vuln_id=44037 ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI: * AUTOMATED SCANNING http://secunia.com/vulnerability_scanning/personal/ http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/ DESCRIPTION: A vulnerability has been reported in ISC DHCP, which can be exploited by malicious people to compromise a vulnerable system. This can be exploited to submit shell commands to the "dhclient-script" script via e.g. a specially crafted "hostname" response. SOLUTION: Update to version 3.1-ESV-R1 and 4.1-ESV-R2 or 4.2.1-P1. Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ PROVIDED AND/OR DISCOVERED BY: The vendor credits Sebastian Krahmer and Marius Tomaschewski, SUSE Security Team. ORIGINAL ADVISORY: https://www.isc.org/software/dhcp/advisories/cve-2011-0997 OTHER REFERENCES: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ DEEP LINKS: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ EXTENDED DESCRIPTION: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ EXTENDED SOLUTION: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ EXPLOIT: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help private users keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/advisories/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/advisories/about_secunia_advisories/ Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor. ---------------------------------------------------------------------- Unsubscribe: Secunia Security Advisories http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org ---------------------------------------------------------------------- . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: dhcp security update Advisory ID: RHSA-2011:0840-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-0840.html Issue date: 2011-05-31 CVE Names: CVE-2011-0997 ===================================================================== 1. Summary: Updated dhcp packages that fix one security issue are now available for Red Hat Enterprise Linux 3 Extended Life Cycle Support. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux AS (v. 3 ELS) - i386 Red Hat Enterprise Linux ES (v. 3 ELS) - i386 3. Description: The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address. A malicious DHCP server could send such an option with a specially-crafted value to a DHCP client. If this option's value was saved on the client system, and then later insecurely evaluated by a process that assumes the option is trusted, it could lead to arbitrary code execution with the privileges of that process. (CVE-2011-0997) Red Hat would like to thank Sebastian Krahmer of the SuSE Security Team for reporting this issue. All dhclient users should upgrade to these updated packages, which contain a backported patch to correct this issue. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 689832 - CVE-2011-0997 dhclient: insufficient sanitization of certain DHCP response values 6. Package List: Red Hat Enterprise Linux AS (v. 3 ELS): Source: dhcp-3.0.1-10.3_EL3.src.rpm i386: dhclient-3.0.1-10.3_EL3.i386.rpm dhcp-3.0.1-10.3_EL3.i386.rpm dhcp-debuginfo-3.0.1-10.3_EL3.i386.rpm dhcp-devel-3.0.1-10.3_EL3.i386.rpm Red Hat Enterprise Linux ES (v. 3 ELS): Source: dhcp-3.0.1-10.3_EL3.src.rpm i386: dhclient-3.0.1-10.3_EL3.i386.rpm dhcp-3.0.1-10.3_EL3.i386.rpm dhcp-debuginfo-3.0.1-10.3_EL3.i386.rpm dhcp-devel-3.0.1-10.3_EL3.i386.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2011-0997.html https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is &lt;secalert@redhat.com&gt;. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2011 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFN5QSLXlSAg2UNWIIRAsdVAJ9mkD7RcbzsYOkK8JnEQsRSeelYuwCeNmZd LdK24/RBkJXiFOiY5pI8Eig= =HTuE -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . Updated packages for Ubuntu 6.06 LTS: Source archives: http://security.ubuntu.com/ubuntu/pool/main/d/dhcp3/dhcp3_3.0.3-6ubuntu7.2.diff.gz Size/MD5: 68426 b4a36d1b44e8276211cef0b9bfbb6ea5 http://security.ubuntu.com/ubuntu/pool/main/d/dhcp3/dhcp3_3.0.3-6ubuntu7.2.dsc Size/MD5: 1428 2fe76544defdfa3d4ab61d548ea5bc03 http://security.ubuntu.com/ubuntu/pool/main/d/dhcp3/dhcp3_3.0.3.orig.tar.gz Size/MD5: 870240 f91416a0b8ed3fd0601688cf0b7df58f amd64 architecture (Athlon64, Opteron, EM64T Xeon): http://security.ubuntu.com/ubuntu/pool/main/d/dhcp3/dhcp3-client_3.0.3-6ubuntu7.2_amd64.deb Size/MD5: 221524 2cc3c7815cb6e6a2cc21d0c2a6286202 http://security.ubuntu.com/ubuntu/pool/main/d/dhcp3/dhcp3-common_3.0.3-6ubuntu7.2_amd64.deb Size/MD5: 454060 4d6e00d001d85359af4777316c012038 http://security.ubuntu.com/ubuntu/pool/main/d/dhcp3/dhcp3-dev_3.0.3-6ubuntu7.2_amd64.deb Size/MD5: 131252 bf862b9ce2cc9888f9e617f42c0d8f77 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336918 26cba2f6096556526ce2a64556f571e5

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

Input Validation Error

CONFIGURATIONS

PATCH

EXTERNAL IDS

REFERENCES