Cisco ios xe service instance software#

Cisco ios xe service instance software#

If the device is running a Cisco IOS XE Software release earlier than Release 17.3.1, it is considered vulnerable only if it does not support Autonomic Networking.ДЇor information about which Cisco software releases are vulnerable, see the Fixed Software section of this advisory. In addition, if the device is running Cisco IOS XE Software Release 17.3.1 or a later release that is earlier than the first fixed release, the device is considered vulnerable. Integrated Services Virtual (ISRv) Routers.Cloud Services Router (CSR) 1000V Series.ASR 1000 Series Aggregation Services Routers.1000 Integrated Services Routers (ISRs).This vulnerability affects Cisco IOS XE Software if it is running on one of the following Cisco products: For a complete list of the advisories and links to them, see Cisco Event Response: September 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication. This advisory is part of the September 2021 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. This advisory is available at the following link:

There are workarounds that address this vulnerability. A successful exploit could allow the attacker to cause a queue wedge on the interface, resulting in a DoS condition.Д¬isco has released software updates that address this vulnerability. An attacker could exploit this vulnerability by sending specific Layer 2 frames on the segment the router is connected to. This vulnerability is due to improper handling of certain Layer 2 frames. A vulnerability in the Layer 2 punt code of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a queue wedge on an interface that receives specific Layer 2 frames, resulting in a denial of service (DoS) condition.