Headline
CVE-2023-20218: Cisco Security Advisory: Cisco Small Business SPA500 Series IP Phones Web UI Vulnerabilities
A vulnerability in web-based management interface of Cisco SPA500 Series Analog Telephone Adapters (ATAs) could allow an authenticated, remote attacker to to modify a web page in the context of a user’s browser.
This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected software. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to alter the contents of a web page to redirect the user to potentially malicious websites, or the attacker could use this vulnerability to conduct further client-side attacks.
Cisco will not release software updates that address this vulnerability.
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Summary
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Multiple vulnerabilities in the web-based management interface of Cisco Small Business SPA500 Series IP Phones could allow an unauthenticated, remote attacker to conduct cross-site scripting (XSS) or HTML injection attacks.
For more information about these vulnerabilities, see the Details section of this advisory.
There are no workarounds that address these vulnerabilities.
This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-spa-web-multi-7kvPmu2F
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Affected Products
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At the time of publication, these vulnerabilities affected all software releases that were running on Cisco Small Business SPA500 Series IP Phones.
For information about which Cisco software releases were vulnerable at the time of publication, see the Fixed Software section of this advisory. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
Only products listed in the Vulnerable Products section of this advisory are known to be affected by these vulnerabilities.
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Details
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The vulnerabilities are not dependent on one another. Exploitation of one of the vulnerabilities is not required to exploit the other vulnerability. In addition, a software release that is affected by one of the vulnerabilities may not be affected by the other vulnerability.
Details about the vulnerabilities are as follows:
CVE-2023-20181: Cisco Small Business SPA500 Series IP Phones XSS Vulnerability
A vulnerability in the web-based management interface of Cisco Small Business SPA500 Series IP Phones could allow an unauthenticated, remote attacker to conduct XSS attacks.
This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected software. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.
There are no workarounds that address this vulnerability.
Bug ID(s): CSCwf04956
CVE ID: CVE-2023-20181
Security Impact Rating (SIR): Medium
CVSS Base Score: 6.1
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NCVE-2023-20218: Cisco Small Business SPA500 Series IP Phones HTML Injection Vulnerability
A vulnerability in the web-based management interface of Cisco Small Business SPA500 Series IP Phones could allow an unauthenticated, remote attacker to modify a web page in the context of a user’s browser.
This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of the affected software. An attacker could exploit this vulnerability by persuading a user to click a crafted link. A successful exploit could allow the attacker to alter the contents of a web page to redirect a user to potentially malicious websites. A successful exploit could also allow the attacker to conduct further client-side attacks.
There are no workarounds that address this vulnerability.
Bug ID(s): CSCwf82071
CVE ID: CVE-2023-20218
Security Impact Rating (SIR): Medium
CVSS Base Score: 5.8
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
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Workarounds
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- There are no workarounds that address these vulnerabilities.
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Fixed Software
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Cisco has not released and will not release software updates to address the vulnerabilities that are described in this advisory. Cisco Small Business SPA500 Series IP Phones have entered the end-of-life process. Customers are advised to refer to the end-of-life notices for these products:
https://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/small-business-spa500-series-ip-phones/eos-eol-notice-c51-741207.html
When considering a device migration, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page, to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the new product type will be sufficient for their network needs and that current hardware and software configurations will continue to be supported properly by the new product. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
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Exploitation and Public Announcements
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- The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
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Source
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- Cisco would like to thank Ahmed Hassan and Josef Hassan of Titanium Cyber Security Solutions for reporting these vulnerabilities.
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Cisco Security Vulnerability Policy
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- To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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Related to This Advisory
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URL
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Revision History
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Version
Description
Section
Status
Date
1.0
Initial public release.
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Final
2023-JUL-19
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