Cisco IP Phone 6800, 7800, and 8800 Series with Multiplatform Firmware Vulnerabilities

CVE numbers CVE-2024-20357 and CVE-2024-20376 and CVE-2024-20378

Multiple vulnerabilities in Cisco IP Phone firmware could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition, gain unauthorized access, or view sensitive information on an affected system.

Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

These vulnerabilities affect the following Cisco products if they are running a vulnerable release of Cisco IP Phone firmware:

• IP Phone 6800 Series with Multiplatform Firmware
• IP Phone 7800 Series with Multiplatform Firmware
• IP Phone 8800 Series with Multiplatform Firmware
• Video Phone 8875 in Multiplatform Mode

This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipphone-multi-vulns-cXAhCvS

CVE-2024-20376: Cisco IP Phone DoS Vulnerability

A vulnerability in the web-based management interface of Cisco IP Phone firmware could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a DoS condition.

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 of an affected device. A successful exploit could allow the attacker to cause the affected device to reload.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Bug ID(s): CSCwi64103, CSCwi64077
CVE ID: CVE-2024-20376
Security Impact Rating (SIR): High
CVSS Base Score: 7.5
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVE-2024-20378: Cisco IP Phone Information Disclosure Vulnerability

A vulnerability in the web-based management interface of Cisco IP Phone firmware could allow an unauthenticated, remote attacker to retrieve sensitive information from an affected device.

This vulnerability is due to a lack of authentication for specific endpoints of the web-based management interface on an affected device. An attacker could exploit this vulnerability by connecting to the affected device. A successful exploit could allow the attacker to gain unauthorized access to the device, enabling the recording of user credentials and traffic to and from the affected device, including VoIP calls that could be replayed.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Bug ID(s): CSCwi64037, CSCwi64050
CVE ID: CVE-2024-20378
Security Impact Rating (SIR): High
CVSS Base Score: 7.5
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVE-2024-20357: Cisco IP Phone Unauthorized Access Vulnerability

A vulnerability in the XML service of Cisco IP Phone firmware could allow an unauthenticated, remote attacker to initiate phone calls on an affected device.

This vulnerability exists because bounds-checking does not occur while parsing XML requests. An attacker could exploit this vulnerability by sending a crafted XML request to an affected device. A successful exploit could allow the attacker to initiate calls or play sounds on the device.

Note: The XML service is disabled by default.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Bug ID(s): CSCwi64082, CSCwi64064
CVE ID: CVE-2024-20357
Security Impact Rating (SIR): Medium
CVSS Base Score: 5.3
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N