CVE-2020-3568: Input Validation
First published: Thu Oct 08 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 a 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 | <=13.5.2 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is CVE-2020-3568.
What is the severity of CVE-2020-3568?
The severity of CVE-2020-3568 is medium with a CVSS score of 5.8.
How does CVE-2020-3568 affect Cisco AsyncOS Software?
CVE-2020-3568 affects Cisco AsyncOS Software for Cisco Email Security Appliance (ESA).
What is the potential impact of CVE-2020-3568?
The vulnerability could allow an unauthenticated, remote attacker to bypass the URL reputation filters on an affected device.
Is there a fix for CVE-2020-3568?
Cisco has released a security advisory with mitigations for CVE-2020-3568. Please refer to the advisory for more details.
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- canonical/cisco asyncos
- version/cisco asyncos/13.5.2