CVE-2018-0447 Cisco Email Security Appliance URL Filtering Bypass Vulnerability
Remote attackers can bypass URL filtering on Cisco Email Security Appliances by sending crafted SPF packets, allowing malicious URLs 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-2018-0447?
CVE-2018-0447 is a medium-severity vulnerability in Cisco Email Security Appliance, published on 5 Oct 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the anti-spam protection mechanisms of Cisco AsyncOS Software for the Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass certain content filters on an affected device. The vulnerability is due to incomplete input and validation checking mechanisms for certain Sender Policy Framework (SPF) messages that are sent to an affected device. An attacker could exploit this vulnerability by sending a customized SPF packet to an affected device. If successful, an exploit could allow the attacker to bypass the URL filters that are configured for the affected device, which could allow malicious URLs to pass through the device.
Which versions are affected by CVE-2018-0447?
It affects 1 product.
Products include Cisco Email Security Appliance.
How do I fix CVE-2018-0447?
No fix has been published for CVE-2018-0447 yet. Limit exposure of the affected software until one is available.
Is CVE-2018-0447 being exploited?
There is no known exploitation of CVE-2018-0447 in the wild and no public exploit code.
Other vulnerabilities in Cisco Email Security Appliance
- CVE-2022-20798 Cisco Email Security Appliance and Cisco Secure Email and Web Manager External Authentication Bypass Vulnerability
- CVE-2015-6291 Denial of service in n/a
- CVE-2022-20664 Cisco Email Security Appliance and Cisco Secure Email and Web Manager Information Disclosure Vulnerability
- CVE-2022-20960 Denial of service in Cisco Secure Email
- CVE-2018-0419 Security feature bypass in Email Security Appliance (ESA)
Sources
Also known as GHSA-6x9p-wvp8-hwgq.