CVE-2019-1933 Cisco Email Security Appliance Content Filter Bypass Vulnerability
Unauthenticated attackers can bypass email filters and inject scripts by sending crafted emails to Cisco ESA, requiring specific client settings for execution.
- 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-2019-1933?
CVE-2019-1933 is a medium-severity vulnerability in Cisco Email Security Appliance, published on 6 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the email message scanning of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass configured filters on the device. The vulnerability is due to improper input validation of certain email fields. An attacker could exploit this vulnerability by sending a crafted email message to a recipient protected by the ESA. A successful exploit could allow the attacker to bypass configured message filters and inject arbitrary scripting code inside the email body. The malicious code is not executed by default unless the recipient's email client is configured to execute scripts contained in emails.
Weakness: CWE-20
Which versions are affected by CVE-2019-1933?
It affects 1 product.
Products include Cisco Email Security Appliance.
How do I fix CVE-2019-1933?
No fix has been published for CVE-2019-1933 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-1933 being exploited?
There is no known exploitation of CVE-2019-1933 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-wh6w-g2c8-6w6p.