CVE-2019-1886
High
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.
SeverityHigh
CVSS8.6
Exploit probability—
Product
Cisco Asyncos
PublishedJul 4, 2019
First seenJul 4, 2019
Weakness typeCWE-20Improper input validation
How to fix
Update
- cisco asyncos10.5.5-005, 11.5.2-020 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco asyncos | 10.5 ≤ v < 10.5.5-005, 11.5 ≤ v < 11.5.2-020 | 10.5.5-005, 11.5.2-020 |
| cisco web_security_appliance | 10.5.2-072, 10.5.3-025, 11.7.0-fcs-334 | — |
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