CVE-2019-1672: Cisco Web Security Appliance Decryption Policy Bypass Vulnerability
First published: Fri Feb 08 2019(Updated: )
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.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Web Security Appliance | =10.1.0-204 | |
| Cisco Web Security Appliance | =10.5.2-072 | |
| Cisco Web Security Appliance | =11.5.1-fcs-115 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the vulnerability ID for this Cisco Web Security Appliance vulnerability?
The vulnerability ID for this vulnerability is CVE-2019-1672.
What is the severity rating of CVE-2019-1672?
CVE-2019-1672 has a severity rating of 5.8 (medium).
Which versions of Cisco Web Security Appliance are affected by CVE-2019-1672?
Versions 10.1.0-204, 10.5.2-072, and 11.5.1-fcs-115 of Cisco Web Security Appliance are affected by CVE-2019-1672.
What is the impact of CVE-2019-1672?
This vulnerability allows an unauthenticated, remote attacker to bypass a configured drop policy and allow traffic onto the network that should have been denied.
How can I fix the vulnerability CVE-2019-1672?
Apply the necessary updates provided by Cisco to fix CVE-2019-1672.
- collector/nvd-index
- agent/references
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/last-modified-date
- agent/weakness
- agent/author
- agent/title
- agent/tags
- agent/description
- agent/first-publish-date
- agent/event
- vendor/cisco
- canonical/cisco web security appliance
- version/cisco web security appliance/10.1.0-204
- version/cisco web security appliance/10.5.2-072
- version/cisco web security appliance/11.5.1-fcs-115