CVE-2020-3368: Cisco Email Security Appliance URL Filtering Bypass Vulnerability
First published: Thu Jun 18 2020(Updated: )
A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the URL reputation filters on an affected device. The vulnerability is due to insufficient input validation of URLs. An attacker could exploit this vulnerability by crafting the URL in a particular way. A successful exploit could allow the attacker to bypass the URL reputation filters that are configured for the affected device, which could allow malicious URLs to pass through the device.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco AsyncOS | <13.5.0 | |
| Cisco Email Security Appliance |
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Reference Links
Frequently Asked Questions
What is CVE-2020-3368?
CVE-2020-3368 is a vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance.
How does CVE-2020-3368 impact affected devices?
CVE-2020-3368 allows an unauthenticated, remote attacker to bypass the URL reputation filters on an affected device.
What is the severity of CVE-2020-3368?
CVE-2020-3368 has a severity rating of 5.8 (medium).
How do I fix CVE-2020-3368?
To fix CVE-2020-3368, apply the necessary patch provided by Cisco.
Where can I find more information about CVE-2020-3368?
You can find more information about CVE-2020-3368 in the Cisco Security Advisory.
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