7.4
CWE
20
Advisory Published
Updated

CVE-2019-1749: Cisco Aggregation Services Router 900 Route Switch Processor 3 OSPFv2 Denial of Service Vulnerability

First published: Wed Mar 27 2019(Updated: )

A vulnerability in the ingress traffic validation of Cisco IOS XE Software for Cisco Aggregation Services Router (ASR) 900 Route Switch Processor 3 (RSP3) could allow an unauthenticated, adjacent attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability exists because the software insufficiently validates ingress traffic on the ASIC used on the RSP3 platform. An attacker could exploit this vulnerability by sending a malformed OSPF version 2 (OSPFv2) message to an affected device. A successful exploit could allow the attacker to cause a reload of the iosd process, triggering a reload of the affected device and resulting in a DoS condition.

Credit: ykramarz@cisco.com ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco IOS XE
Cisco IOS XE=3.13.6as
Cisco IOS XE=3.16.0as
Cisco IOS XE=3.16.1as
Cisco IOS XE=3.16.2as
Cisco IOS XE=3.16.3as
Cisco IOS XE=3.16.4bs
Cisco IOS XE=3.16.4cs
Cisco IOS XE=3.16.4ds
Cisco IOS XE=3.16.4es
Cisco IOS XE=3.16.4gs
Cisco IOS XE=3.16.4s
Cisco IOS XE=3.16.5as
Cisco IOS XE=3.16.5s
Cisco IOS XE=3.16.6bs
Cisco IOS XE=3.16.6s
Cisco IOS XE=3.16.7bs
Cisco IOS XE=3.16.7s
Cisco IOS XE=3.16.8s
Cisco IOS XE=3.17.0s
Cisco IOS XE=3.17.1s
Cisco IOS XE=3.17.3s
Cisco IOS XE=3.17.4s
Cisco IOS XE=3.18.0s
Cisco IOS XE=3.18.0sp
Cisco IOS XE=3.18.1bsp
Cisco IOS XE=3.18.1gsp
Cisco IOS XE=3.18.1hsp
Cisco IOS XE=3.18.1isp
Cisco IOS XE=3.18.1s
Cisco IOS XE=3.18.1sp
Cisco IOS XE=3.18.2s
Cisco IOS XE=3.18.2sp
Cisco IOS XE=3.18.3s
Cisco IOS XE=3.18.3sp
Cisco IOS XE=3.18.4s
Cisco IOS XE=3.18.4sp
Cisco IOS XE=16.5.1
Cisco IOS XE=16.5.2
Cisco IOS XE=16.5.3
Cisco IOS XE=16.6.1
Cisco IOS XE=16.6.2
Cisco IOS XE=16.6.3
Cisco IOS XE=16.6.4
Cisco IOS XE=16.7.1
Cisco IOS XE=16.7.2
Cisco IOS XE=16.8.1
Cisco IOS XE=16.8.1b
Cisco IOS XE=16.8.1c

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