CVSS: 7.7EPSS: 0%CPEs: 7EXPL: 0CVE-2019-1884 – Cisco Web Security Appliance Web Proxy Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2019-1884
A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation mechanisms for certain fields in HTTP/HTTPS requests sent through an affected device. A successful attacker could exploit this vulnerability by sending a malicious HTTP/HTTPS request through an affected device. An exploit could allow the attacker to force the device to stop processing traffic, resulting in a DoS condition. Una vulnerabilidad en la funcionalidad de proxy web de Cisco AsyncOS Software para Cisco Web Security Appliance (WSA) podría permitir que un atacante remoto autenticado provoque una condición de denegación de servicio (DoS) en un dispositivo afectado. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-asyncos-wsa • CWE-20: Improper Input Validation •
CVSS: 8.6EPSS: 0%CPEs: 5EXPL: 0CVE-2019-1886 – Cisco Web Security Appliance HTTPS Certificate Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2019-1886
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. Una vulnerabilidad en la función de descifrado HTTPS de Cisco Web Security Appliance (WSA) podría permitir que un atacante remoto no autenticado provoque una condición de denegación de servicio (DoS). • http://www.securityfocus.com/bid/109049 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-wsa-dos • CWE-20: Improper Input Validation CWE-295: Improper Certificate Validation •
CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2019-1816 – Cisco Web Security Appliance Privilege Escalation Vulnerability
https://notcve.org/view.php?id=CVE-2019-1816
A vulnerability in the log subscription subsystem of the Cisco Web Security Appliance (WSA) could allow an authenticated, local attacker to perform command injection and elevate privileges to root. The vulnerability is due to insufficient validation of user-supplied input on the web and command-line interface. An attacker could exploit this vulnerability by authenticating to the affected device and injecting scripting commands in the scope of the log subscription subsystem. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system and elevate privileges to root. Una vulnerabilidad en el subsistema de Subscripción de Registro (log subscription) de Cisco Web Security Appliance (WSA) podría permitir a un atacante local autorizado ejecutar la inyección de comandos y elevar los privilegios a root. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-wsa-privesc • CWE-20: Improper Input Validation •
CVSS: 5.8EPSS: 0%CPEs: 3EXPL: 0CVE-2019-1672 – Cisco Web Security Appliance Decryption Policy Bypass Vulnerability
https://notcve.org/view.php?id=CVE-2019-1672
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. • http://www.securityfocus.com/bid/106904 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190206-wsa-bypass • CWE-400: Uncontrolled Resource Consumption •
CVSS: 7.2EPSS: 0%CPEs: 4EXPL: 0CVE-2018-0428
https://notcve.org/view.php?id=CVE-2018-0428
A vulnerability in the account management subsystem of Cisco Web Security Appliance (WSA) could allow an authenticated, local attacker to elevate privileges to root. The attacker must authenticate with valid administrator credentials. The vulnerability is due to improper implementation of access controls. An attacker could exploit this vulnerability by authenticating to the device as a specific user to gain the information needed to elevate privileges to root in a separate login shell. A successful exploit could allow the attacker to escape the CLI subshell and execute system-level commands on the underlying operating system as root. • http://www.securityfocus.com/bid/105104 http://www.securitytracker.com/id/1041536 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-wsa-escalation • CWE-269: Improper Privilege Management CWE-284: Improper Access Control •