A vulnerability classified as problematic has been found in Cisco IOS XE (Router Operating System) (version now known). This affects some unknown processing of the component Unified Threat Defense. The manipulation as part of a IPv6 Packet leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

A vulnerability in Unified Threat Defense (UTD) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper validation of IPv6 packets through the UTD feature. An attacker could exploit this vulnerability by sending IPv6 traffic through an affected device that is configured with UTD. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

The weakness was released 09/25/2019 as cisco-sa-20190925-utd as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is uniquely identified as CVE-2019-12657 since 06/04/2019. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/28/2023).

Upgrading eliminates this vulnerability.

Entries connected to this vulnerability are available at VDB-142285, VDB-142284, VDB-142283 and VDB-142282.

Productinfo

Type

• Router Operating System

Vendor

• Cisco

Name

• IOS XE

License

• commercial

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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