Description
A vulnerability in the Layer 2 Ethernet services of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the line card network processor to reset, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of specific Ethernet frames that are received on line cards that have the Layer 2 services feature enabled. An attacker could exploit this vulnerability by sending specific Ethernet frames through an affected device. A successful exploit could allow the attacker to cause the ingress interface network processor to reset, resulting in a loss of traffic over the interfaces that are supported by the network processor. Multiple resets of the network processor would cause the line card to reset, resulting in a DoS condition.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Cisco Cisco IOS XR Software
6.5.2affected6.5.3affected6.6.2affected6.6.3affected6.6.25affected7.0.1affected7.0.2affected7.1.1affected7.1.15affected7.1.2affected7.1.3affected6.7.1affected6.7.2affected6.7.3affected7.3.1affected7.3.2affected7.3.3affected7.3.5affected7.4.1affected7.4.2affected6.8.1affected6.8.2affected7.5.1affected7.5.3affected7.5.2affected7.5.4affected7.5.5affected7.6.1affected7.6.2affected7.7.1affected7.7.2affected6.9.1affected6.9.2affected7.8.1affected7.8.2affected7.9.1affected