cisco-sa-20190703-esa-bypass: Cisco Email Security Appliance Content Filter Bypass Vulnerability
A vulnerability in the attachment scanning of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass configured content filters on the device. The vulnerability is due to improper input validation of the email body. An attacker could exploit this vulnerability by naming a malicious attachment with a specific pattern. A successful exploit could allow the attacker to bypass configured content filters that would normally block the attachment. 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-20190703-esa-bypass
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Affected Software
Event History
Frequently Asked Questions
What is the severity of cisco-sa-20190703-esa-bypass?
The severity of cisco-sa-20190703-esa-bypass is considered high due to the potential for unauthenticated attackers to bypass content filters.
How do I fix cisco-sa-20190703-esa-bypass?
To fix cisco-sa-20190703-esa-bypass, ensure your Cisco AsyncOS Software for Cisco Email Security Appliance is updated to the latest version that addresses this vulnerability.
What impact does cisco-sa-20190703-esa-bypass have on email security?
cisco-sa-20190703-esa-bypass can allow attackers to bypass content filters, which may result in malicious email attachments being delivered.
Who is affected by cisco-sa-20190703-esa-bypass?
Organizations using Cisco AsyncOS Software for Cisco Email Security Appliance are affected by cisco-sa-20190703-esa-bypass.
Can cisco-sa-20190703-esa-bypass be exploited remotely?
Yes, cisco-sa-20190703-esa-bypass can be exploited by unauthenticated remote attackers.