CVE-2019-15988

Cisco Email Security Appliance URL Filtering Bypass Vulnerability

Description

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.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.34%
Vendor Advisory cisco.com
Affected: Cisco Cisco Email Security Appliance (ESA)
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191120-esa-url-bypass vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-15988?
CVE-2019-15988 has been scored as a medium severity vulnerability.
How to fix CVE-2019-15988?
To fix CVE-2019-15988, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-15988 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-15988 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-15988?
CVE-2019-15988 affects Cisco Cisco Email Security Appliance (ESA).
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