TITLE: Juniper JUNOS Packet Forwarding Engine IPv6 Denial of Service SECUNIA ADVISORY ID: SA11950 VERIFY ADVISORY: http://secunia.com/advisories/11950/ CRITICAL: Moderately critical IMPACT: DoS WHERE: >From remote OPERATING SYSTEM: JUNOS 6.x http://secunia.com/product/3418/ DESCRIPTION: A vulnerability has been discovered in Juniper JUNOS, which can be exploited by malicious people to cause a DoS (Denial of Service). The vulnerability is caused due to a memory leak within the IPv6 Packet Forwarding Engine (PFE) when processing certain IPv6 packets. This can be exploited by sending multiple specially crafted IPv6 packets to a vulnerable network device. Successful exploitation consumes all available memory and causes a vulnerable network device to reboot. The vulnerability affects all Juniper routers running JUNOS with a PFE released after February 24, 2004. SOLUTION: A solution is available at: https://www.juniper.net/alerts/viewalert.jsp?txtAlertNumber=PSN-2004-06-009&actionBtn=Search Disable IPv6 support in the PFE. PROVIDED AND/OR DISCOVERED BY: Reported by vendor. OTHER REFERENCES: US-CERT VU#658859: http://www.kb.cert.org/vuls/id/658859 ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/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@packetstormsecurity.org ----------------------------------------------------------------------