high
8.6
CWE
863 288
Advisory Published
Updated

CVE-2023-20018

First published: Thu Jan 19 2023(Updated: )

A vulnerability in the web-based management interface of Cisco IP Phone 7800 and 8800 Series Phones could allow an unauthenticated, remote attacker to bypass authentication on an affected device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted request to the web-based management interface. A successful exploit could allow the attacker to access certain parts of the web interface that would normally require authentication.

Credit: ykramarz@cisco.com ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
All of
Cisco IP Conference Phone 7800 firmware<14.1\(1\)sr2
Cisco IP Phone 7800 Series
All of
Cisco IP Phone 7811 firmware<14.1\(1\)sr2
Cisco IP Phone 7811 firmware
All of
Cisco IP Phone 7821 firmware<14.1\(1\)sr2
Cisco IP Phone 7821 firmware
All of
Cisco IP Conference Phone 7832 Firmware<14.1\(1\)sr2
Cisco IP Phone 7832 firmware
All of
Cisco IP Phone 7841 firmware<14.1\(1\)sr2
Cisco IP Phone 7841 firmware
All of
Cisco IP Phone 7861 firmware<14.1\(1\)sr2
Cisco IP Phone 7861 firmware
All of
Cisco IP Phone 8800 Series Firmware<14.1\(1\)sr2
Cisco 8800
All of
Cisco IP Phone 8811 firmware<14.1\(1\)sr2
Cisco IP Phone 8811 firmware
All of
Cisco Wireless IP Phone 8821 Firmware<14.1\(1\)sr2
Cisco Wireless IP Phone 8821-EX
All of
Cisco Wireless IP Phone 8821-EX firmware<14.1\(1\)sr2
Cisco Wireless IP Phone 8821-EX
All of
Cisco 8831 Firmware<14.1\(1\)sr2
Cisco IP Phone 8831 firmware
All of
cisco ip phone 8832 firmware<14.1\(1\)sr2
cisco ip phone 8832
All of
Cisco IP Phone 8841 firmware<14.1\(1\)sr2
Cisco IP Phone 8841 firmware
All of
Cisco IP Phone 8845 firmware<14.1\(1\)sr2
Cisco IP Phone 8845 firmware
All of
Cisco IP Phone 8851 firmware<14.1\(1\)sr2
Cisco IP Phone 8851 firmware
All of
cisco ip phone 8861 firmware<14.1\(1\)sr2
Cisco IP Phone 8861 Firmware 3PCC
All of
cisco ip phone 8865 firmware<14.1\(1\)sr2
cisco ip phone 8865
All of
Cisco IP Phones 8832 firmware<14.1\(1\)sr2
Cisco IP Phones 8832 firmware
All of
Cisco Unified IP Phone 8851nr Firmware<14.1\(1\)sr2
Cisco Unified IP Phone 8851nr Firmware
All of
Cisco Unified IP Phone 8865<14.1\(1\)sr2
Cisco Unified IP Phone 8865
All of
Cisco Wireless IP Phone 8821-EX firmware<11.0\(6\)sr4
Cisco Wireless IP Phone 8821-EX
All of
Cisco Wireless IP Phone 8821-EX firmware<11.0\(6\)sr4
Cisco Wireless IP Phone 8821-EX firmware
Cisco IP Conference Phone 7800 firmware<14.1\(1\)sr2
Cisco IP Phone 7800 Series
Cisco IP Phone 7811 firmware<14.1\(1\)sr2
Cisco IP Phone 7811 firmware
Cisco IP Phone 7821 firmware<14.1\(1\)sr2
Cisco IP Phone 7821 firmware
Cisco IP Conference Phone 7832 Firmware<14.1\(1\)sr2
Cisco IP Phone 7832 firmware
Cisco IP Phone 7841 firmware<14.1\(1\)sr2
Cisco IP Phone 7841 firmware
Cisco IP Phone 7861 firmware<14.1\(1\)sr2
Cisco IP Phone 7861 firmware
Cisco IP Phone 8800 Series Firmware<14.1\(1\)sr2
Cisco 8800
Cisco IP Phone 8811 firmware<14.1\(1\)sr2
Cisco IP Phone 8811 firmware
Cisco Wireless IP Phone 8821 Firmware<14.1\(1\)sr2
Cisco Wireless IP Phone 8821-EX
Cisco Wireless IP Phone 8821-EX firmware<14.1\(1\)sr2
Cisco Wireless IP Phone 8821-EX
Cisco 8831 Firmware<14.1\(1\)sr2
Cisco IP Phone 8831 firmware
cisco ip phone 8832 firmware<14.1\(1\)sr2
cisco ip phone 8832
Cisco IP Phone 8841 firmware<14.1\(1\)sr2
Cisco IP Phone 8841 firmware
Cisco IP Phone 8845 firmware<14.1\(1\)sr2
Cisco IP Phone 8845 firmware
Cisco IP Phone 8851 firmware<14.1\(1\)sr2
Cisco IP Phone 8851 firmware
cisco ip phone 8861 firmware<14.1\(1\)sr2
Cisco IP Phone 8861 Firmware 3PCC
cisco ip phone 8865 firmware<14.1\(1\)sr2
cisco ip phone 8865
Cisco IP Phones 8832 firmware<14.1\(1\)sr2
Cisco IP Phones 8832 firmware
Cisco Unified IP Phone 8851nr Firmware<14.1\(1\)sr2
Cisco Unified IP Phone 8851nr Firmware
Cisco Unified IP Phone 8865<14.1\(1\)sr2
Cisco Unified IP Phone 8865
Cisco Wireless IP Phone 8821-EX firmware<11.0\(6\)sr4
Cisco Wireless IP Phone 8821-EX
Cisco Wireless IP Phone 8821-EX firmware<11.0\(6\)sr4
Cisco Wireless IP Phone 8821-EX firmware

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2023-20018.

  • What is the severity level of CVE-2023-20018?

    The severity level of CVE-2023-20018 is high, with a CVSS score of 6.5.

  • Which Cisco IP Phone series are affected by CVE-2023-20018?

    CVE-2023-20018 affects the Cisco IP Phone 7800 and 8800 Series Phones.

  • How can an attacker exploit CVE-2023-20018?

    An attacker can exploit CVE-2023-20018 by bypassing authentication on the affected device through the web-based management interface.

  • Where can I find more information about CVE-2023-20018?

    You can find more information about CVE-2023-20018 in the Cisco Security Advisory at this link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ip-phone-auth-bypass-pSqxZRPR

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