CVE-2019-1766: Cisco IP Phone 8800 Series File Upload Denial of Service Vulnerability
First published: Fri Mar 22 2019(Updated: )
A vulnerability in the web-based management interface of Session Initiation Protocol (SIP) Software for Cisco IP Phone 8800 Series could allow an unauthenticated, remote attacker to cause high disk utilization, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software does not restrict the maximum size of certain files that can be written to disk. An attacker who has valid administrator credentials for an affected system could exploit this vulnerability by sending a crafted, remote connection request to an affected system. A successful exploit could allow the attacker to write a file that consumes most of the available disk space on the system, causing application functions to operate abnormally and leading to a DoS condition. This vulnerability affects Cisco IP Phone 8800 Series products running a SIP Software release prior to 12.5(1)SR1.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Ip Phone 8800 Firmware | <12.5\(1\)sr1 | |
| Cisco IP Phone 8800 |
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Reference Links
Frequently Asked Questions
What is CVE-2019-1766?
CVE-2019-1766 is a vulnerability in the web-based management interface of Cisco IP Phone 8800 Series SIP Software that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.
What is the severity of CVE-2019-1766?
CVE-2019-1766 has a severity value of 7.5, which is considered high.
How can an attacker exploit CVE-2019-1766?
An attacker can exploit CVE-2019-1766 by sending specially crafted requests to the vulnerable web-based management interface, causing high disk utilization and resulting in a DoS condition.
Is Cisco IP Phone 8800 Firmware version 12.5(1)sr1 affected by CVE-2019-1766?
Yes, Cisco IP Phone 8800 Firmware version 12.5(1)sr1 is affected by CVE-2019-1766.
How can I fix CVE-2019-1766?
To fix CVE-2019-1766, Cisco recommends upgrading to a fixed firmware release, as indicated in the Cisco Security Advisory.
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