8.6
High
CVE-2019-1886 A vulnerability in the HTTPS decryption feature of Cisco Web Security Appliance (WSA) could allow an unauthenticated,…
Description
A vulnerability in the HTTPS decryption feature of Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient validation of Secure Sockets Layer (SSL) server certificates. An attacker could exploit this vulnerability by installing a malformed certificate in a web server and sending a request to it through the Cisco WSA. A successful exploit could allow the attacker to cause an unexpected restart of the proxy process on an affected device.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco Web Security Appliance (WSA) 10.5 | earliest → < 10.5.5-005 | 10.5.5-005 |
References
- 20190703 Cisco Web Security Appliance HTTPS Certificate Denial of Service Vulnerability tools.cisco.com
- 109049 www.securityfocus.com
Timeline
- Published
- Last modified
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