CVE-2019-1747

Cisco IOS and IOS XE Software Short Message Service Denial of Service Vulnerability

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.

Category

8.6
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.52% Top 20%
Vendor Advisory cisco.com
Affected: Cisco Cisco IOS and IOS XE Software
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-sms-dos patch vendor advisory
http://www.securityfocus.com/bid/107599 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2019-1747?
CVE-2019-1747 has been scored as a high severity vulnerability.
How to fix CVE-2019-1747?
To fix CVE-2019-1747, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-1747 being actively exploited in the wild?
It is possible that CVE-2019-1747 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-1747?
CVE-2019-1747 affects Cisco Cisco IOS and IOS XE Software.
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