Headline
CVE-2023-20265: Cisco Security Advisory: Cisco IP Phone Stored Cross-Site Scripting Vulnerability
A vulnerability in the web-based management interface of a small subset of Cisco IP Phones could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface on an affected device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by persuading a user of an affected interface to view a page containing malicious HTML or script content. 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. To exploit this vulnerability, the attacker must have valid credentials to access the web-based management interface of the affected device.
When considering software upgrades, 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 devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
Fixed Releases
At the time of publication, the release information in the following tables was accurate. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
The left column lists Cisco software releases, and the right column indicates whether a release was affected by the vulnerability that is described in this advisory and which release included the fix for this vulnerability.
IP DECT 110 Single-Cell Base Station with Multiplatform Firmware or IP DECT 210 Multi-Cell Base Station with Multiplatform Firmware
Cisco IP Phones with Multiplatform Firmware Release
First Fixed Release
5.1.1 and earlier
Migrate to a fixed release.
5.1.2
5.1.2SR1
**Unified IP Phone 6901**
Cisco Session Initiation Protocol (SIP) Software Release
First Fixed Release
SIP v.9
9.3(1)SR3
**Unified SIP Phone 3905**
Cisco Session Initiation Protocol (SIP) Software Release
First Fixed Release
SIP v.9
9.4(1)SR4
The Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.