CVE-2009-0778 – kernel: rt_cache leak leads to lack of network connectivity

https://notcve.org/view.php?id=CVE-2009-0778

The icmp_send function in net/ipv4/icmp.c in the Linux kernel before 2.6.25, when configured as a router with a REJECT route, does not properly manage the Protocol Independent Destination Cache (aka DST) in some situations involving transmission of an ICMP Host Unreachable message, which allows remote attackers to cause a denial of service (connectivity outage) by sending a large series of packets to many destination IP addresses within this REJECT route, related to an "rt_cache leak." La función icmp_send en net/ipv4/icmp.c en el kernel Linux anerior a v2.6.25, cuando se configura como un router con una ruta RECHAZADA, no gestiona apropiadamente el Protocolo Independiente de Caché de Destino (alias DST) en alguna situación que involucra transmisión de un mensaje ICMP Host inalcanzable, el cual permite a los atacantes remotos causar una denegación de servicio (conectividad parada) enviando una larga serie de paquetes a muchos direcciones IP de destino con esta ruta RECHAZADA, RELATIVA a "rt_cache leak." • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7c0ecc4c4f8fd90988aab8a95297b9c0038b6160 http://openwall.com/lists/oss-security/2009/03/11/2 http://secunia.com/advisories/33758 http://secunia.com/advisories/37471 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25 http://www.redhat.com/support/errata/RHSA-2009-0326.html http://www.securityfocus.com/archive/1/507985/100/0/threaded http://www.securityfocus.com/bid/34084 http:/&#x • CWE-400: Uncontrolled Resource Consumption •