cisco-sa-20190501-esa-bypass: Cisco Email Security Appliance Filter Bypass Vulnerability
A vulnerability in certain attachment detection mechanisms of the Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the filtering functionality of an affected device. The vulnerability is due to improper detection of certain content sent to an affected device. An attacker could exploit this vulnerability by sending certain file types without Content-Disposition information to an affected device. A successful exploit could allow an attacker to send messages that contain malicious content to users. 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-20190501-esa-bypass
Affected Software
Event History
Frequently Asked Questions
What is the severity of cisco-sa-20190501-esa-bypass?
The severity of cisco-sa-20190501-esa-bypass is considered high due to its potential impact on email security.
How do I fix cisco-sa-20190501-esa-bypass?
To fix cisco-sa-20190501-esa-bypass, ensure that you apply the latest firmware updates and security patches provided by Cisco.
Who is affected by cisco-sa-20190501-esa-bypass?
Organizations using vulnerable versions of the Cisco Email Security Appliance are affected by cisco-sa-20190501-esa-bypass.
What type of attack does cisco-sa-20190501-esa-bypass enable?
cisco-sa-20190501-esa-bypass enables unauthenticated remote attackers to bypass email filtering mechanisms.
What is the impact of cisco-sa-20190501-esa-bypass?
The impact of cisco-sa-20190501-esa-bypass includes the potential for malicious content to be delivered to users, undermining email security.