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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2014.1450 Cisco IOS XR Software Packet Parsing Denial of Service Vulnerability 27 August 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-2014-3335 Original Bulletin: http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3335 - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Security Notice Cisco IOS XR Software Packet Parsing Denial of Service Vulnerability http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3335 CVE ID: CVE-2014-3335 Release Date: 2014 August 25 15:22 UTC (GMT) Last Updated: 2014 August 25 20:30 UTC (GMT) Related Documents: Summary A vulnerability in the packet parsing code of Cisco IOS XR Software for ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent attacker to cause a lockup and eventual reload of a Network Processor (NP) chip and a line card processing traffic. The vulnerability is due to improper parsing of a specific packet when NetFlow sampling is configured. An attacker could exploit this vulnerability by sending a specific packet with a multicast destination MAC address through an affected device that has NetFlow sampling configured. An exploit could allow the attacker to cause a lockup and eventual reload of an NP chip and a line card processing traffic. Affected Products Product More Information CVSS Cisco IOS XR Software CSCup77750 4.6/3.8 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. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBU/0rSBLndAQH1ShLAQKIbRAAmqUuhRechkUv0srDWQI6KYJM2Q6bHi8E M+wyGTpANDqVRJn+AJnCPCi4vb4NJKeH2ibDjAhxe5eXmb7f5wNAni3LFWebRM6y lNVoGc5CAY+cUpftO12UjPCfDdoQPHBb7D3B9bUJ6cvPbvYhLj/HbF2NYF9zRVY7 35X2LmfUfdm7gsrPHMTp4wt1XKSL9tfngVzjwwNGCzZl2SOvTgtGh2SpAOV96501 tfN7krUJ8iRlPcahPiF3XF/muOJiiYJY6et+Sn8FYUoDLYOsm5RHvGyhNyftxNta PYzjebIylC+3pfcwwOzHRcuhg0/SGNKlJuqOndaIsRitr9s6f6eccn+FMyajKn14 i/HUWzoDTSe3HltMzNP8JftPPkhW1XabCnkY9HMBcPDUybB7UtV6XQL9IRU+NqMg O5TMVPG0pzAwxVmBdBe1L5H4JvBRzGFHhEhNhLP8sBtgHMEoBNG5L6Rsb2AiD7QN k8Jb0mATZ9cgpVn3m693bfMyWJissmQbXTSUyPUCMMoUfSDMowSIBOkrpkZEujoi UHPD7iaTW39Gd34Un+HqBqAOcj0xf/KwgSKj9M4dYW/4IHaKkkvqcTRBB46CPLMV b7aF8qO+52yqW2BCQciIAHFr35CQPzX3g6sV2CzZ+/tgTMAZbGvlaBeIi6/Y69V7 O1+B0ELb9kQ= =inD3 -----END PGP SIGNATURE-----