Vulnerability · Published Sep 25, 2024 · Assigned by cisco
CVE-2024-20455
High 8.6
In plain English
A high-severity security flaw in Cisco IOS XE Catalyst SD-WAN from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities).
Official description
A vulnerability in the process that classifies traffic that is going to the Unified Threat Defense (UTD) component of Cisco IOS XE Software in controller mode could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because UTD improperly handles certain packets as those packets egress an SD-WAN IPsec tunnel. An attacker could exploit this vulnerability by sending crafted traffic through an SD-WAN IPsec tunnel that is configured on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. Note: SD-WAN tunnels that are configured with Generic Routing Encapsulation (GRE) are not affected by this vulnerability.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco IOS XE Software | 17.1.117.1.1a17.1.1s17.1.1t17.1.317.2.117.2.1r17.2.1a |
| Cisco | Cisco IOS XE Catalyst SD-WAN | 17.5.1a17.6.1a17.6.217.6.417.7.1a17.9.1a17.9.2a17.9.3a |
Weakness: CWE-371 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H