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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2014.0957 Cisco IOS XR Software IPv6 Malformed Packet Denial of Service Vulnerability 12 June 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-2014-2176 Original Bulletin: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140611-ipv6 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco IOS XR Software IPv6 Malformed Packet Denial of Service Vulnerability Advisory ID: cisco-sa-20140611-ipv6 Revision 1.0 For Public Release 2014 June 11 16:00 UTC (GMT) Summary ======= A vulnerability in the parsing of malformed Internet Protocol version 6 (IPv6) packets in Cisco IOS XR Software for ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause a lockup and eventual reload of a Network Processor (NP) chip and a line card processing traffic. Only Trident-based line cards on Cisco ASR 9000 Series Aggregation Services Routers are affected by this vulnerability. The vulnerability is due to insufficient logic in parsing malformed IPv6 packets. An attacker could exploit this vulnerability by sending a stream of malformed IPv6 packets to the affected device. An exploit could allow the attacker to cause a lockup and eventual reload of an NP chip and a line card, leading to a denial of service (DoS) condition. Cisco has released free software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140611-ipv6 - -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.22 (Darwin) Comment: GPGTools - http://gpgtools.org iQIcBAEBAgAGBQJTmF6XAAoJEIpI1I6i1Mx39ewP/05Z15cOVZKPHsTZQ0nk10Mf LuR8znSVolxIOJl3KWw7Liorml2kAy5mP9lQuMq2AKy/ifDb1CkBRGhpSXAJys9l MHrlg2Bvkm2+oacv8L9m1GLMCzOREc5ItvjXeEjZIzkaM4RrPvTSI79YOxYFjAIK jnrfdk2s9IBTvedB5bib5cpVal7X5T5E7TL0eIizpJzhSrzd/opsVeITOzcqoniU 9L7F5tQJ7RrhMipRKBFrDNp49u0MB3FgiLL+PvR2Qd4ErKmuUsA4MwAsh20krshi e3XVhYgVzqdodVSdphZeAA753yFJYD+ot8rzxW28MoaBfLC7jl23eEUsmAVZ5BO+ /xJ2S1rvHxQhAqaWSOo3dOOHspGtFk7/ZqMAIoKM+w/qx6O6IyY4SgdEYaKLWMDw H+7ya7XXCHfx3BRz9mlnfE7yNrmG+/P95rtyW4zuLuCOwAm/vm+xasj2E2Uts7VV iSLXlH7MNB3PjBkHXomMkvmLaDF5PvbKhlKoinMmJpDhKT286Jjn9RiDGaiVJdH4 rHNjTTVFoYsXLYnHrtpybfYLWmd9OMRYp/nVh75gzm7IvPnN6CCCl8LaHNOq1hcH 4V62x5LrN95yDR83n+weZouWlWcLMVU/aKIlSiN0O0+8/7dOmbgMjjtf8nvkBB6n 0fff2LUlieosr03ZacDo =rfKB - -----END PGP SIGNATURE----- - --------------------------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 iQIVAwUBU5jtTRLndAQH1ShLAQJFTA/9EKDbmovkdHSEcVOSF4eubX9nrpa3yR8a 62sp1QYyHYswiUVM/2tN3G/Cb3Z9bfpM6VhA5fW/B8NKPY3boXUTLOPo2W/2zly7 D7+s35BYc7DcywP6QhuOzUSU+Cs6DBf/Ev35Z62v6ukKVvLdYcKdPlZCt7OIMKu4 kKK0794bOZicea7jcrxm2ObHMkAk7qNqh+RH35+iTILHR//2Co0nYJPlG/aK6N11 zbr1KTTl65K+w4wdOnkL5kouqINDVjbtzJqMiV9HfsxhUU5LFy4xKjeKaDCpJkIk jxLnNaFukPSUZrS0jeBdP5U93O7mP6HwPa7KZieFDCsNSxN+qiOwDT0Y2DyZNbGl Nje8IbWn4H6ldBUN6EDKxFkMiPU6kPP5foEXEh5P89aaXbdxeKORZDfzGGEzWAKX w5nTv96oJ/DIwEOXEJXEEExrB5zCcp0Aln1H9VsT4F0jM81Du9NVjHEEHkygMnUg t/lvqmZU16xkwmD10m/c2wpPi4Bv5vjPuT7/xoikQfpMYzJ3AxwtRn25k550MI9t 4cgC3j2Z5PtD4hm5CuQkaDAZXw6VPpsZ6Cj49VB2js6S3o4yM3RmIq5gP8eevwu3 MFl3NL+IVThz41yP8FgZPPfX+chIjdcmleQuWYpqyvBUhvPR8G+L633LPLhEEgU5 B70pJBm47v4= =ZNZs -----END PGP SIGNATURE-----