CVE-2021-1420

A vulnerability in certain web pages of Cisco Webex Meetings could allow an unauthenticated, remote attacker to modify a web page in the context of a user's browser. The vulnerability is due to improper checks on parameter values in affected pages. An attacker could exploit this vulnerability by persuading a user to follow a crafted link that is designed to pass HTML code into an affected parameter. 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.

A vulnerability in certain web pages of Cisco Webex Meetings could allow an unauthenticated, remote attacker to modify a web page in the context of a user's browser. The vulnerability is due to improper checks on parameter values in affected pages. An attacker could exploit this vulnerability by persuading a user to follow a crafted link that is designed to pass HTML code into an affected parameter. 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.

Una vulnerabilidad en determinadas páginas web de Cisco Webex Meetings, podría permitir a un atacante remoto no autenticado modificar una página web en el contexto del navegador de un usuario. La vulnerabilidad es debido a comprobaciones inapropiadas de los valores de los parámetros en páginas afectadas. Un atacante podría explotar esta vulnerabilidad al persuadir a un usuario para seguir un vínculo elaborado que está diseñado para pasar código HTML a un parámetro afectado. Una explotación con éxito podría permitir al atacante alterar el contenido de una página web para redireccionar al usuario a sitios web potencialmente maliciosos, o el atacante podría usar esta vulnerabilidad para conducir más ataques del lado del cliente