CVE-2019-1672 Cisco Web Security Appliance Decryption Policy Bypass Vulnerability
An unauthenticated remote attacker can bypass SSL decryption drop policies on Cisco WSA when end-user notification is disabled, allowing blocked traffic onto the network.
- 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-2019-1672?
CVE-2019-1672 is a medium-severity vulnerability in Cisco Web Security Appliance, published on 8 Feb 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the Decryption Policy Default Action functionality of the Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to bypass a configured drop policy and allow traffic onto the network that should have been denied. The vulnerability is due to the incorrect handling of SSL-encrypted traffic when Decrypt for End-User Notification is disabled in the configuration. An attacker could exploit this vulnerability by sending a SSL connection through the affected device. A successful exploit could allow the attacker to bypass a configured drop policy to block specific SSL connections. Releases 10.1.x and 10.5.x are affected.
Weakness: CWE-400
Which versions are affected by CVE-2019-1672?
It affects 1 product.
Products include Cisco Web Security Appliance.
How do I fix CVE-2019-1672?
No fix has been published for CVE-2019-1672 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-1672 being exploited?
There is no known exploitation of CVE-2019-1672 in the wild and no public exploit code.
Other vulnerabilities in Cisco Web Security Appliance
Sources
Also known as GHSA-xgwc-rmqj-wxqr.