A vulnerability in the IPv6 subsystem of Cisco IOS XR Software Release 5.3.4 for the Cisco Aggregation Services Router (ASR) 9000 Series could allow an unauthenticated, remote attacker to trigger a reload of one or more Trident-based line cards, resulting in a denial of service (DoS) condition. The vulnerability is due to incorrect handling of IPv6 packets with a fragment header extension. An attacker could exploit this vulnerability by sending IPv6 packets designed to trigger the issue either to or through the Trident-based line card. A successful exploit could allow the attacker to trigger a reload of Trident-based line cards, resulting in a DoS during the period of time the line card takes to restart. This vulnerability affects Cisco Aggregation Services Router (ASR) 9000 Series when the following conditions are met: The router is running Cisco IOS XR Software Release 5.3.4, and the router has installed Trident-based line cards that have IPv6 configured. A software maintenance upgrade (SMU) has been made available that addresses this vulnerability. The fix has also been incorporated into service pack 7 for Cisco IOS XR Software Release 5.3.4. Cisco Bug IDs: CSCvg46800.
Metrics
Affected Vendors & Products
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History
Mon, 02 Dec 2024 22:15:00 +0000
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MITRE
Status: PUBLISHED
Assigner: cisco
Published: 2018-01-31T20:00:00
Updated: 2024-12-02T21:24:47.666Z
Reserved: 2017-11-27T00:00:00
Link: CVE-2018-0136
Vulnrichment
Updated: 2024-08-05T03:14:16.885Z
NVD
Status : Modified
Published: 2018-01-31T20:29:00.663
Modified: 2024-11-21T03:37:35.470
Link: CVE-2018-0136
Redhat
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