CVE-2019-15988 Cisco Email Security Appliance URL Filtering Bypass Vulnerability
An unauthenticated remote attacker can bypass URL reputation filters on Cisco Email Security Appliances by crafting malicious URLs, allowing harmful links to pass through.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-15988?
CVE-2019-15988 is a medium-severity vulnerability in Cisco Email Security Appliance (ESA), published on 26 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-20
Which versions are affected by CVE-2019-15988?
It affects 1 product.
Products include Cisco Email Security Appliance Firmware.
How do I fix CVE-2019-15988?
No fix has been published for CVE-2019-15988 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-15988 being exploited?
There is no known exploitation of CVE-2019-15988 in the wild and no public exploit code.
Other vulnerabilities in Cisco Email Security Appliance (ESA)
- CVE-2016-6406 Auth bypass in n/a
- CVE-2018-15453 Cisco Email Security Appliance Memory Corruption Denial of Service Vulnerability
- CVE-2017-6671 Security feature bypass in Cisco Email Security Appliance
- CVE-2016-6458 Security feature bypass in Cisco AsyncOS 10.0.0-125 and 9.7.1-066
- CVE-2019-12706 Cisco Email Security Appliance Filter Bypass Vulnerability
Sources
Also known as GHSA-vxf2-rc93-x6wf.