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AUSCERT External Security Bulletin Redistribution
Cisco Security Notice Cisco IOS XR Software MPLS Packet
Denial of Service Vulnerability
17 July 2014
AusCERT Security Bulletin Summary
Product: Cisco IOS XR Software
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2014-3321
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Cisco Security Notice Cisco IOS XR Software MPLS Packet Denial of Service
CVE ID: CVE-2014-3321
Release Date: 2014 July 15 12:18 UTC (GMT)
Last Updated: 2014 July 15 18:30 UTC (GMT)
A vulnerability in parsing crafted Multiprotocol Label Switching (MPLS)
packets in Cisco IOS XR Software for ASR 9000 Series Aggregation Services
Routers could allow an unauthenticated, adjacent attacker to cause a lockup
and eventual reload of a network processor chip and a line card processing
The vulnerability is due to insufficient logic in parsing MPLS packets. An
attacker could exploit this vulnerability by sending a stream of crafted MPLS
packets to be routed by a bridge-group virtual interface (BVI) on the affected
device. An exploit could allow the attacker to cause a lockup and eventual
reload of a network processor chip and a line card, leading to a denial of
service (DoS) condition.
Product More Information CVSS
Cisco IOS XR Software CSCuo91149 5.7/4.7
What Is a Cisco Security Notice?
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