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

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