
CVE-2019-1886 – Cisco Web Security Appliance HTTPS Certificate Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2019-1886
04 Jul 2019 — 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... • http://www.securityfocus.com/bid/109049 • CWE-20: Improper Input Validation CWE-295: Improper Certificate Validation •

CVE-2019-1817 – Cisco Web Security Appliance Malformed Request Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2019-1817
03 May 2019 — A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliance could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of HTTP and HTTPS requests. An attacker could exploit this vulnerability by sending a malformed HTTP or HTTPS request to an affected device. An exploit could allow the attacker to cause a restart of the web proxy process, resulting in a tempo... • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-wsa-dos • CWE-20: Improper Input Validation •

CVE-2019-1816 – Cisco Web Security Appliance Privilege Escalation Vulnerability
https://notcve.org/view.php?id=CVE-2019-1816
03 May 2019 — 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 ... • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-wsa-privesc • CWE-20: Improper Input Validation •

CVE-2019-1672 – Cisco Web Security Appliance Decryption Policy Bypass Vulnerability
https://notcve.org/view.php?id=CVE-2019-1672
08 Feb 2019 — 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... • http://www.securityfocus.com/bid/106904 • CWE-400: Uncontrolled Resource Consumption •

CVE-2018-0410
https://notcve.org/view.php?id=CVE-2018-0410
15 Aug 2018 — A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliances could allow an unauthenticated, remote attacker to exhaust system memory and cause a denial of service (DoS) condition on an affected system. The vulnerability exists because the affected software improperly manages memory resources for TCP connections to a targeted device. An attacker could exploit this vulnerability by establishing a high number of TCP connections to the data interface of an affected... • http://www.securityfocus.com/bid/105098 • CWE-400: Uncontrolled Resource Consumption •

CVE-2018-0428
https://notcve.org/view.php?id=CVE-2018-0428
15 Aug 2018 — 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 ... • http://www.securityfocus.com/bid/105104 • CWE-269: Improper Privilege Management CWE-284: Improper Access Control •

CVE-2018-0406
https://notcve.org/view.php?id=CVE-2018-0406
01 Aug 2018 — A vulnerability in the web-based management interface of Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to conduct a reflected or Document Object Model based (DOM-based) cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected device. An attacker could exploit this vulnerability by persuading a... • http://www.securityfocus.com/bid/104945 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVE-2018-0366
https://notcve.org/view.php?id=CVE-2018-0366
16 Jul 2018 — A vulnerability in the web-based management interface of Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to conduct a reflected cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected device. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted l... • http://www.securityfocus.com/bid/104724 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVE-2018-0353
https://notcve.org/view.php?id=CVE-2018-0353
07 Jun 2018 — A vulnerability in traffic-monitoring functions in Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to circumvent Layer 4 Traffic Monitor (L4TM) functionality and bypass security protections. The vulnerability is due to a change in the underlying operating system software that is responsible for monitoring affected traffic. An attacker could exploit this vulnerability by sending crafted IP packets to an affected device. A successful exploit could allow the attacker to pass ... • http://www.securityfocus.com/bid/104417 • CWE-254: 7PK - Security Features •

CVE-2017-6783
https://notcve.org/view.php?id=CVE-2017-6783
17 Aug 2017 — A vulnerability in SNMP polling for the Cisco Web Security Appliance (WSA), Email Security Appliance (ESA), and Content Security Management Appliance (SMA) could allow an authenticated, remote attacker to discover confidential information about the appliances that should be available only to an administrative user. The vulnerability occurs because the appliances do not protect confidential information at rest in response to Simple Network Management Protocol (SNMP) poll requests. An attacker could exploit t... • http://www.securityfocus.com/bid/100387 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •