The purpose of this article is to discuss the vulnerability associated with Cisco Phone Adapters. RCE stands for “Remote Code Execution”, which is a type of cyber attack that allows an attacker to take control of a victim’s computer or network by remotely executing malicious code on it.
This type of attack is considered very dangerous because it can give an attacker complete control over a victim’s system and access to sensitive information. In an RCE attack, the attacker can exploit vulnerabilities in software or applications to execute code remotely and take control of the victim’s system without their knowledge or consent.
This can result in the theft of sensitive data, the installation of malware or spyware, or even the complete destruction of the victim’s system. RCE attacks are a serious threat to computer and network security and can cause significant harm to individuals and organizations if not properly mitigated.
Cisco SPA112 2-Port Phone Adapters – CVE-2023-20126
Cisco SPA112 2-Port Phone Adapters are vulnerable to a security flaw in their web-based management interface, which could allow an attacker to execute arbitrary code on an affected device without authentication. The vulnerability arises due to a lack of authentication in the firmware upgrade function, which could enable an attacker to install a malicious firmware version on an affected device.
A successful exploitation of this vulnerability could result in the attacker gaining full control of the affected device and executing code with elevated privileges. Unfortunately, there are no available firmware updates from Cisco to fix this vulnerability.
Cisco has not released firmware updates to address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-spa-unauth-upgrade-UqhyTWW
What Can You Do for CVE-2023-20126?
The best course of action for organizations with Cisco SPA112 2-Port Phone Adapters is to replace them with supported hardware. The old hardware is no longer supported by Cisco. Contact your local Cisco reseller for further recommendations.