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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2014.0776 Multiple vulnerabilities have been identified in Cisco IOS XR 21 May 2014 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco IOS XR Publisher: Cisco Systems Operating System: Cisco Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2014-3271 CVE-2014-3270 Original Bulletin: http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3270 http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3271 Comment: This bulletin contains two (2) Cisco Systems security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Security Notice Cisco IOS XR Software DHCP Version 6 Process Hang Vulnerability http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3270 CVE ID: CVE-2014-3270 Release Date: 2014 May 19 21:02 UTC (GMT) Last Updated: 2014 May 20 15:07 UTC (GMT) Related Documents: Summary A vulnerability in the DHCP version 6 (DHCPv6) code of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a hang condition of the DHCPv6 server process that could cause the software to stop processing DHCPv6 requests. The vulnerability is due to incorrect handling of malformed DHCPv6 packets. An attacker could exploit this vulnerability by sending a malformed DHCPv6 packet to an affected device configured with DHCPv6 server functionality. An exploit could allow the attacker to cause a hang condition of the DHCPv6 server process that could cause the software to stop processing any further DHCPv6 requests. Affected Products Product More Information CVSS Cisco IOS XR Software CSCul80924 5.0/4.1 What Is a Cisco Security Notice? The Cisco Product Security Incident Response Team (PSIRT) publishes Cisco Security Notices to inform customers of low- to mid-level severity security issues involving Cisco products. Customers who wish to upgrade to a software version that includes fixes for these issues should contact their normal support channels. Free software updates will not be provided for issues that are disclosed through a Cisco Security Notice. For additional information about Cisco PSIRT publications, see the Cisco Security Vulnerability Policy at http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html Customers Using Third-Party Support Organizations Customers may have Cisco products that are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers. For these products, customers should consult their service providers or support organizations to ensure that any applied workaround or fix is the most appropriate in the intended network before it is deployed. Disclaimer THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A stand-alone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy, and may lack important information or contain factual errors. - ------------------------------------------------------------------------------ Cisco Security Notice Cisco IOS XR Software DHCP Version 6 Denial of Service Vulnerability http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3271 CVE ID: CVE-2014-3271 Release Date: 2014 May 19 21:06 UTC (GMT) Last Updated: 2014 May 20 15:04 UTC (GMT) Related Documents: Summary A vulnerability in the DHCP version 6 (DHCPv6) code of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause the DHCPv6 process on an affected device to crash. The vulnerability is due to incorrect handling of malformed DHCPv6 packets. An attacker could exploit this vulnerability by sending a malformed DHCPv6 packet to an affected device configured with DHCPv6 server functionality. An exploit could allow the attacker to cause the DHCPv6 process on an affected device to crash. Affected Products Product More Information CVSS Cisco IOS XR Software CSCum85558, CSCum20949, CSCul61849, 5.0/4.1 CSCul71149 What Is a Cisco Security Notice? The Cisco Product Security Incident Response Team (PSIRT) publishes Cisco Security Notices to inform customers of low- to mid-level severity security issues involving Cisco products. Customers who wish to upgrade to a software version that includes fixes for these issues should contact their normal support channels. Free software updates will not be provided for issues that are disclosed through a Cisco Security Notice. For additional information about Cisco PSIRT publications, see the Cisco Security Vulnerability Policy at http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html Customers Using Third-Party Support Organizations Customers may have Cisco products that are provided or maintained through prior or existing agreements with third-party support organizations, such as Cisco Partners, authorized resellers, or service providers. For these products, customers should consult their service providers or support organizations to ensure that any applied workaround or fix is the most appropriate in the intended network before it is deployed. Disclaimer THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A stand-alone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy, and may lack important information or contain factual errors. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBU3wA0xLndAQH1ShLAQIl7g/9Ej8ouQibBfxuni1ONQ9R05ex4A8DSxWX FKCsQq/WECc4HRknJ/bMf0ESWbGSWiFT73fbNYt5F51Zdb7G50osHqGxQ/DixjHG Yw3Z7VSzD9rgS6/cU5xrktFSnyNueqCp7uPgLyIUDl7hTcYieE/M/zQlYwa2Bg7K uGpshmgRQGS9YfZR27TKmdwvV3pIIPOqDkWCNc9dqyGSl5RGLsdpfggMYYPss1Sf eQ2MeRyORQkBdvLeGZI0IKqW+6kK7Fc8hoTNKC209oRQRCo9Io2LMSbuOWfoIJar E2RMVUOjMifwdXRx/gs2D7tdnETgbGIqT7UMk0xSTSUkWwfdiQD1KviCtC8Iocvl WUPfpo6bxJK1KdCwFN/uueS4cWwCgztrBsZk90C9xpu/+kGn61X/8XQKOmST2gsL x2TWJ9Oyd+rrlCdeZ1bsNC2iXiLme40CqJxalI9fiqjzmgSnATP4rTxx3DP2+Qpk pX082S/xwstE+GQYLAkUxwcJIYcPFncna5PXRHONE82QnfDxFWvEmzu8/fHDCrEu dkB6nvb0t3muUr3Qo2YCOZVl0oa+dbcOmKnm8pPhFb6DPrg6RulW0a25DMPNjz85 R8QN2QbCVkhdW4atl2LA1vmWhor9pa1/Z9wD8MFVwS66s58g84bMILC+zf1KbXr8 JI2jDZpT8DU= =pVnh -----END PGP SIGNATURE-----