CVE-2019-1747: cisco cisco ios and ios xe software Improper Input Validation

Vulnerability summary

CVE-2019-1747 is a high (CVSS 8.6) Improper Input Validation vulnerability in cisco cisco ios and ios xe software. EPSS estimates a 2.39% chance of exploitation in the next 30 days, higher than 83.6% of scored vulnerabilities.

Timeline

1. 27-03-2019
   PublishedVulnerability first disclosed.
2. 19-11-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability in the implementation of the Short Message Service (SMS) handling functionality of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition on an affected device. The vulnerability is due to improper processing of SMS protocol data units (PDUs) that are encoded with a special character set. An attacker could exploit this vulnerability by sending a malicious SMS message to an affected device. A successful exploit could allow the attacker to cause the wireless WAN (WWAN) cellular interface module on an affected device to crash, resulting in a DoS condition that would require manual intervention to restore normal operating conditions.

• CWE-20Improper Input ValidationThe 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.