First published: Wed Sep 27 2023(Updated: )
A vulnerability in the Layer 2 Tunneling Protocol (L2TP) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of certain L2TP packets. An attacker could exploit this vulnerability by sending crafted L2TP packets to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition. Note: Only traffic directed to the affected system can be used to exploit this vulnerability.
Credit: ykramarz@cisco.com ykramarz@cisco.com
Affected Software | Affected Version | How to fix |
---|---|---|
Cisco IOS XE | =16.8.1 | |
Cisco IOS XE | =16.8.1a | |
Cisco IOS XE | =16.8.1b | |
Cisco IOS XE | =16.8.1c | |
Cisco IOS XE | =16.8.1d | |
Cisco IOS XE | =16.8.1e | |
Cisco IOS XE | =16.8.1s | |
Cisco IOS XE | =16.8.2 | |
Cisco IOS XE | =16.8.3 | |
Cisco IOS XE | =16.9.1 | |
Cisco IOS XE | =16.9.1a | |
Cisco IOS XE | =16.9.1b | |
Cisco IOS XE | =16.9.1s | |
Cisco IOS XE | =16.9.2 | |
Cisco IOS XE | =16.9.3 | |
Cisco IOS XE | =16.9.4 | |
Cisco IOS XE | =16.9.5 | |
Cisco IOS XE | =16.9.5f | |
Cisco IOS XE | =16.9.6 | |
Cisco IOS XE | =16.9.7 | |
Cisco IOS XE | =16.9.8 | |
Cisco IOS XE | =16.10.1 | |
Cisco IOS XE | =16.10.1a | |
Cisco IOS XE | =16.10.1b | |
Cisco IOS XE | =16.10.1c | |
Cisco IOS XE | =16.10.1d | |
Cisco IOS XE | =16.10.1e | |
Cisco IOS XE | =16.10.1f | |
Cisco IOS XE | =16.10.1g | |
Cisco IOS XE | =16.10.1s | |
Cisco IOS XE | =16.10.2 | |
Cisco IOS XE | =16.10.3 | |
Cisco IOS XE | =16.11.1 | |
Cisco IOS XE | =16.11.1a | |
Cisco IOS XE | =16.11.1b | |
Cisco IOS XE | =16.11.1s | |
Cisco IOS XE | =16.11.2 | |
Cisco IOS XE | =16.12.1 | |
Cisco IOS XE | =16.12.1a | |
Cisco IOS XE | =16.12.1c | |
Cisco IOS XE | =16.12.1s | |
Cisco IOS XE | =16.12.1t | |
Cisco IOS XE | =16.12.1w | |
Cisco IOS XE | =16.12.1x | |
Cisco IOS XE | =16.12.1y | |
Cisco IOS XE | =16.12.1z1 | |
Cisco IOS XE | =16.12.1z2 | |
Cisco IOS XE | =16.12.2 | |
Cisco IOS XE | =16.12.2a | |
Cisco IOS XE | =16.12.2s | |
Cisco IOS XE | =16.12.3 | |
Cisco IOS XE | =16.12.3s | |
Cisco IOS XE | =16.12.4 | |
Cisco IOS XE | =16.12.4a | |
Cisco IOS XE | =16.12.5 | |
Cisco IOS XE | =16.12.5a | |
Cisco IOS XE | =16.12.6 | |
Cisco IOS XE | =16.12.6a | |
Cisco IOS XE | =16.12.7 | |
Cisco IOS XE | =16.12.8 | |
Cisco IOS XE | =17.1.1 | |
Cisco IOS XE | =17.1.1a | |
Cisco IOS XE | =17.1.1s | |
Cisco IOS XE | =17.1.1t | |
Cisco IOS XE | =17.1.3 | |
Cisco IOS XE | =17.2.1 | |
Cisco IOS XE | =17.2.1a | |
Cisco IOS XE | =17.2.1r | |
Cisco IOS XE | =17.2.1v | |
Cisco IOS XE | =17.2.2 | |
Cisco IOS XE | =17.2.3 | |
Cisco IOS XE | =17.3.1 | |
Cisco IOS XE | =17.3.1a | |
Cisco IOS XE | =17.3.1w | |
Cisco IOS XE | =17.3.1x | |
Cisco IOS XE | =17.3.1z | |
Cisco IOS XE | =17.3.2 | |
Cisco IOS XE | =17.3.2a | |
Cisco IOS XE | =17.3.3 | |
Cisco IOS XE | =17.3.4 | |
Cisco IOS XE | =17.3.4a | |
Cisco IOS XE | =17.3.4c | |
Cisco IOS XE | =17.3.5 | |
Cisco IOS XE | =17.3.5a | |
Cisco IOS XE | =17.3.5b | |
Cisco IOS XE | =17.3.6 | |
Cisco IOS XE | =17.3.7 | |
Cisco IOS XE | =17.4.1 | |
Cisco IOS XE | =17.4.1a | |
Cisco IOS XE | =17.4.1b | |
Cisco IOS XE | =17.4.2 | |
Cisco IOS XE | =17.4.2a | |
Cisco IOS XE | =17.5.1 | |
Cisco IOS XE | =17.5.1a | |
Cisco IOS XE | =17.5.1b | |
Cisco IOS XE | =17.5.1c | |
Cisco Catalyst 8000v Edge | ||
Cisco Cloud Services Router 1000v | ||
Cisco 1000 Integrated Services Router | ||
Cisco 1100-4g Integrated Services Router | ||
Cisco 1100-4gltegb Integrated Services Router | ||
Cisco 1100-4gltena Integrated Services Router | ||
Cisco 1100-6g Integrated Services Router | ||
Cisco 4221 Integrated Services Router | ||
Cisco 4321\/k9-rf Integrated Services Router | ||
Cisco 4321\/k9-ws Integrated Services Router | ||
Cisco 4321\/k9 Integrated Services Router | ||
Cisco 4321 Integrated Services Router | ||
Cisco 4331\/k9-rf Integrated Services Router | ||
Cisco 4331\/k9-ws Integrated Services Router | ||
Cisco 4331\/k9 Integrated Services Router | ||
Cisco 4331 Integrated Services Router | ||
Cisco 4351\/k9-rf Integrated Services Router | ||
Cisco 4351\/k9-ws Integrated Services Router | ||
Cisco 4351\/k9 Integrated Services Router | ||
Cisco 4351 Integrated Services Router | ||
Cisco 4431 Integrated Services Router | ||
Cisco 4451 Integrated Services Router | ||
Cisco 4461 Integrated Services Router | ||
Cisco C8200-1n-4t | ||
Cisco C8200l-1n-4t | ||
Cisco C8500l-8s4x | ||
Cisco Catalyst 8300-1n1s-4t2x | ||
Cisco Catalyst 8300-1n1s-6t | ||
Cisco Catalyst 8300-2n2s-4t2x | ||
Cisco Catalyst 8300-2n2s-6t | ||
Cisco Vg400-2fxs\/2fxo | ||
Cisco Vg400-4fxs\/4fxo | ||
Cisco Vg400-6fxs\/6fxo | ||
Cisco Vg400-8fxs | ||
Cisco Vg420-132fxs\/6fxo | ||
Cisco Vg420-144fxs | ||
Cisco Vg420-84fxs\/6fxo | ||
Cisco Vg450-144fxs\/k9 | ||
Cisco Vg450-72fxs\/k9 | ||
Cisco Vg450\/k9 | ||
All of | ||
Any of | ||
Cisco IOS XE | =16.8.1 | |
Cisco IOS XE | =16.8.1a | |
Cisco IOS XE | =16.8.1b | |
Cisco IOS XE | =16.8.1c | |
Cisco IOS XE | =16.8.1d | |
Cisco IOS XE | =16.8.1e | |
Cisco IOS XE | =16.8.1s | |
Cisco IOS XE | =16.8.2 | |
Cisco IOS XE | =16.8.3 | |
Cisco IOS XE | =16.9.1 | |
Cisco IOS XE | =16.9.1a | |
Cisco IOS XE | =16.9.1b | |
Cisco IOS XE | =16.9.1s | |
Cisco IOS XE | =16.9.2 | |
Cisco IOS XE | =16.9.3 | |
Cisco IOS XE | =16.9.4 | |
Cisco IOS XE | =16.9.5 | |
Cisco IOS XE | =16.9.5f | |
Cisco IOS XE | =16.9.6 | |
Cisco IOS XE | =16.9.7 | |
Cisco IOS XE | =16.9.8 | |
Cisco IOS XE | =16.10.1 | |
Cisco IOS XE | =16.10.1a | |
Cisco IOS XE | =16.10.1b | |
Cisco IOS XE | =16.10.1c | |
Cisco IOS XE | =16.10.1d | |
Cisco IOS XE | =16.10.1e | |
Cisco IOS XE | =16.10.1f | |
Cisco IOS XE | =16.10.1g | |
Cisco IOS XE | =16.10.1s | |
Cisco IOS XE | =16.10.2 | |
Cisco IOS XE | =16.10.3 | |
Cisco IOS XE | =16.11.1 | |
Cisco IOS XE | =16.11.1a | |
Cisco IOS XE | =16.11.1b | |
Cisco IOS XE | =16.11.1s | |
Cisco IOS XE | =16.11.2 | |
Cisco IOS XE | =16.12.1 | |
Cisco IOS XE | =16.12.1a | |
Cisco IOS XE | =16.12.1c | |
Cisco IOS XE | =16.12.1s | |
Cisco IOS XE | =16.12.1t | |
Cisco IOS XE | =16.12.1w | |
Cisco IOS XE | =16.12.1x | |
Cisco IOS XE | =16.12.1y | |
Cisco IOS XE | =16.12.1z1 | |
Cisco IOS XE | =16.12.1z2 | |
Cisco IOS XE | =16.12.2 | |
Cisco IOS XE | =16.12.2a | |
Cisco IOS XE | =16.12.2s | |
Cisco IOS XE | =16.12.3 | |
Cisco IOS XE | =16.12.3s | |
Cisco IOS XE | =16.12.4 | |
Cisco IOS XE | =16.12.4a | |
Cisco IOS XE | =16.12.5 | |
Cisco IOS XE | =16.12.5a | |
Cisco IOS XE | =16.12.6 | |
Cisco IOS XE | =16.12.6a | |
Cisco IOS XE | =16.12.7 | |
Cisco IOS XE | =16.12.8 | |
Cisco IOS XE | =17.1.1 | |
Cisco IOS XE | =17.1.1a | |
Cisco IOS XE | =17.1.1s | |
Cisco IOS XE | =17.1.1t | |
Cisco IOS XE | =17.1.3 | |
Cisco IOS XE | =17.2.1 | |
Cisco IOS XE | =17.2.1a | |
Cisco IOS XE | =17.2.1r | |
Cisco IOS XE | =17.2.1v | |
Cisco IOS XE | =17.2.2 | |
Cisco IOS XE | =17.2.3 | |
Cisco IOS XE | =17.3.1 | |
Cisco IOS XE | =17.3.1a | |
Cisco IOS XE | =17.3.1w | |
Cisco IOS XE | =17.3.1x | |
Cisco IOS XE | =17.3.1z | |
Cisco IOS XE | =17.3.2 | |
Cisco IOS XE | =17.3.2a | |
Cisco IOS XE | =17.3.3 | |
Cisco IOS XE | =17.3.4 | |
Cisco IOS XE | =17.3.4a | |
Cisco IOS XE | =17.3.4c | |
Cisco IOS XE | =17.3.5 | |
Cisco IOS XE | =17.3.5a | |
Cisco IOS XE | =17.3.5b | |
Cisco IOS XE | =17.3.6 | |
Cisco IOS XE | =17.3.7 | |
Cisco IOS XE | =17.4.1 | |
Cisco IOS XE | =17.4.1a | |
Cisco IOS XE | =17.4.1b | |
Cisco IOS XE | =17.4.2 | |
Cisco IOS XE | =17.4.2a | |
Cisco IOS XE | =17.5.1 | |
Cisco IOS XE | =17.5.1a | |
Cisco IOS XE | =17.5.1b | |
Cisco IOS XE | =17.5.1c | |
Any of | ||
Cisco Catalyst 8000v Edge | ||
Cisco Cloud Services Router 1000v | ||
Cisco 1000 Integrated Services Router | ||
Cisco 1100-4g Integrated Services Router | ||
Cisco 1100-4gltegb Integrated Services Router | ||
Cisco 1100-4gltena Integrated Services Router | ||
Cisco 1100-6g Integrated Services Router | ||
Cisco 4221 Integrated Services Router | ||
Cisco 4321\/k9-rf Integrated Services Router | ||
Cisco 4321\/k9-ws Integrated Services Router | ||
Cisco 4321\/k9 Integrated Services Router | ||
Cisco 4321 Integrated Services Router | ||
Cisco 4331\/k9-rf Integrated Services Router | ||
Cisco 4331\/k9-ws Integrated Services Router | ||
Cisco 4331\/k9 Integrated Services Router | ||
Cisco 4331 Integrated Services Router | ||
Cisco 4351\/k9-rf Integrated Services Router | ||
Cisco 4351\/k9-ws Integrated Services Router | ||
Cisco 4351\/k9 Integrated Services Router | ||
Cisco 4351 Integrated Services Router | ||
Cisco 4431 Integrated Services Router | ||
Cisco 4451 Integrated Services Router | ||
Cisco 4461 Integrated Services Router | ||
Cisco C8200-1n-4t | ||
Cisco C8200l-1n-4t | ||
Cisco C8500l-8s4x | ||
Cisco Catalyst 8300-1n1s-4t2x | ||
Cisco Catalyst 8300-1n1s-6t | ||
Cisco Catalyst 8300-2n2s-4t2x | ||
Cisco Catalyst 8300-2n2s-6t | ||
Cisco Vg400-2fxs\/2fxo | ||
Cisco Vg400-4fxs\/4fxo | ||
Cisco Vg400-6fxs\/6fxo | ||
Cisco Vg400-8fxs | ||
Cisco Vg420-132fxs\/6fxo | ||
Cisco Vg420-144fxs | ||
Cisco Vg420-84fxs\/6fxo | ||
Cisco Vg450-144fxs\/k9 | ||
Cisco Vg450-72fxs\/k9 | ||
Cisco Vg450\/k9 |
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