CVE-2019-1886: high-severity vulnerability in Cisco Web Security Appliance (WSA)
Cisco Web Security Appliance HTTPS Certificate Denial of Service Vulnerability
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.6epss 1.3%
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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Affected products
Cisco · Cisco Web Security Appliance (WSA)Related CVEs — Cisco Web Security Appliance (WSA)
In the same product, most dangerous first.
CVE-2021-1359MEDIUMCisco Web Security Appliance Privilege Escalation VulnerabilityEPSS 1.9%CVE-2019-1817HIGHCisco Web Security Appliance Malformed Request Denial of Service VulnerabilityEPSS 1.8%CVE-2021-34749MEDIUMMultiple Cisco Products Server Name Identification Data Exfiltration VulnerabilityEPSS 1.7%CVE-2019-1672MEDIUMCisco Web Security Appliance Decryption Policy Bypass VulnerabilityEPSS 1.6%CVE-2019-1884HIGHCisco Web Security Appliance Web Proxy Denial of Service VulnerabilityEPSS 1.5%CVE-2021-34698HIGHCisco Web Security Appliance Proxy Service Denial of Service VulnerabilityEPSS 1.4%