CVE-2019-1684: Cisco IP Phone 7800 and 8800 Series Cisco Discovery Protocol and Link Layer Discovery Protocol Denial of Service Vulnerability
First published: Thu Feb 21 2019(Updated: )
A vulnerability in the Cisco Discovery Protocol or Link Layer Discovery Protocol (LLDP) implementation for the Cisco IP Phone 7800 and 8800 Series could allow an unauthenticated, adjacent attacker to cause an affected phone to reload unexpectedly, resulting in a temporary denial of service (DoS) condition. The vulnerability is due to missing length validation of certain Cisco Discovery Protocol or LLDP packet header fields. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol or LLDP packet to the targeted phone. A successful exploit could allow the attacker to cause the affected phone to reload unexpectedly, resulting in a temporary DoS condition. Versions prior to 12.6(1)MN80 are affected.
Credit: ykramarz@cisco.com ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Ip Phone 8800 Firmware | <12.6\(1\)mn80 | |
| Cisco IP Phone 8800 | ||
| Cisco Ip Phone 7800 Firmware | <12.6\(1\)mn80 | |
| Cisco IP Phone 7800 | ||
| Cisco Ip Conference Phone 7832 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Conference Phone 7832 | ||
| Cisco Ip Conference Phone 8832 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Conference Phone 8832 | ||
| Cisco Ip Phone 7811 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Phone 7811 | ||
| Cisco Ip Phone 7821 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Phone 7821 | ||
| Cisco Ip Phone 7841 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Phone 7841 | ||
| Cisco Ip Phone 7861 Firmware | <12.6\(1\)mn80 | |
| Cisco IP Phone 7861 | ||
| Cisco Ip Phone 8811 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Phone 8811 | ||
| Cisco Ip Phone 8841 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Phone 8841 | ||
| Cisco Ip Phone 8845 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Phone 8845 | ||
| Cisco Ip Phone 8851 Firmware | <12.6\(1\)mn80 | |
| Cisco IP Phone 8851 | ||
| Cisco Ip Phone 8861 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Phone 8861 | ||
| Cisco Ip Phone 8865 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Phone 8865 | ||
| All of | ||
| Cisco Ip Phone 8800 Firmware | <12.6\(1\)mn80 | |
| Cisco IP Phone 8800 | ||
| All of | ||
| Cisco Ip Phone 7800 Firmware | <12.6\(1\)mn80 | |
| Cisco IP Phone 7800 | ||
| All of | ||
| Cisco Ip Conference Phone 7832 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Conference Phone 7832 | ||
| All of | ||
| Cisco Ip Conference Phone 8832 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Conference Phone 8832 | ||
| All of | ||
| Cisco Ip Phone 7811 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Phone 7811 | ||
| All of | ||
| Cisco Ip Phone 7821 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Phone 7821 | ||
| All of | ||
| Cisco Ip Phone 7841 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Phone 7841 | ||
| All of | ||
| Cisco Ip Phone 7861 Firmware | <12.6\(1\)mn80 | |
| Cisco IP Phone 7861 | ||
| All of | ||
| Cisco Ip Phone 8811 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Phone 8811 | ||
| All of | ||
| Cisco Ip Phone 8841 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Phone 8841 | ||
| All of | ||
| Cisco Ip Phone 8845 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Phone 8845 | ||
| All of | ||
| Cisco Ip Phone 8851 Firmware | <12.6\(1\)mn80 | |
| Cisco IP Phone 8851 | ||
| All of | ||
| Cisco Ip Phone 8861 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Phone 8861 | ||
| All of | ||
| Cisco Ip Phone 8865 Firmware | <12.6\(1\)mn80 | |
| Cisco Ip Phone 8865 |
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Reference Links
Frequently Asked Questions
What is CVE-2019-1684?
CVE-2019-1684 is a vulnerability in the Cisco Discovery Protocol or Link Layer Discovery Protocol (LLDP) implementation for the Cisco IP Phone 7800 and 8800 Series.
What is the severity of CVE-2019-1684?
The severity of CVE-2019-1684 is medium with a CVSS score of 6.5.
Who is affected by CVE-2019-1684?
The vulnerability affects Cisco IP Phone 7800 and 8800 Series.
How can an attacker exploit CVE-2019-1684?
An unauthenticated, adjacent attacker can exploit CVE-2019-1684 by causing an affected phone to reload unexpectedly, resulting in a temporary denial of service (DoS) condition.
Where can I find more information about CVE-2019-1684?
You can find more information about CVE-2019-1684 on SecurityFocus and the Cisco Security Advisory.
- collector/nvd-index
- agent/references
- agent/type
- agent/title
- agent/weakness
- agent/severity
- agent/description
- agent/first-publish-date
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/author
- agent/softwarecombine
- agent/tags
- agent/event
- vendor/cisco
- canonical/cisco ip phone 8800 firmware
- canonical/cisco ip phone 8800
- canonical/cisco ip phone 7800 firmware
- canonical/cisco ip phone 7800
- canonical/cisco ip conference phone 7832 firmware
- canonical/cisco ip conference phone 7832
- canonical/cisco ip conference phone 8832 firmware
- canonical/cisco ip conference phone 8832
- canonical/cisco ip phone 7811 firmware
- canonical/cisco ip phone 7811
- canonical/cisco ip phone 7821 firmware
- canonical/cisco ip phone 7821
- canonical/cisco ip phone 7841 firmware
- canonical/cisco ip phone 7841
- canonical/cisco ip phone 7861 firmware
- canonical/cisco ip phone 7861
- canonical/cisco ip phone 8811 firmware
- canonical/cisco ip phone 8811
- canonical/cisco ip phone 8841 firmware
- canonical/cisco ip phone 8841
- canonical/cisco ip phone 8845 firmware
- canonical/cisco ip phone 8845
- canonical/cisco ip phone 8851 firmware
- canonical/cisco ip phone 8851
- canonical/cisco ip phone 8861 firmware
- canonical/cisco ip phone 8861
- canonical/cisco ip phone 8865 firmware
- canonical/cisco ip phone 8865