CVE-2019-1747: Cisco IOS and IOS XE Software Short Message Service Denial of Service Vulnerability
First published: Wed Mar 27 2019(Updated: )
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.
Credit: ykramarz@cisco.com ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS | =15.8\(3\)m | |
| Cisco IOS XE | =16.10.1 | |
| =15.8\(3\)m | ||
| =16.10.1 |
Remedy
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-sms-dos
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2019-1747?
CVE-2019-1747 has a high severity rating as it allows unauthorized remote attackers to cause a denial of service.
How do I fix CVE-2019-1747?
To fix CVE-2019-1747, upgrade affected Cisco IOS or IOS XE software to a version that addresses the vulnerability.
What devices are affected by CVE-2019-1747?
CVE-2019-1747 affects specific versions of Cisco IOS 15.8(3)m and Cisco IOS XE 16.10.1.
Can CVE-2019-1747 be exploited remotely?
Yes, CVE-2019-1747 can be exploited remotely by unauthenticated attackers.
What impact does CVE-2019-1747 have on network operations?
CVE-2019-1747 can lead to a denial of service condition, potentially disrupting network operations.
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