CVSS: 8.6EPSS: 0%CPEs: 33EXPL: 0CVE-2021-34783 – Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Software-Based SSL/TLS Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2021-34783
A vulnerability in the software-based SSL/TLS message handler of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. This vulnerability is due to insufficient validation of SSL/TLS messages when the device performs software-based SSL/TLS decryption. An attacker could exploit this vulnerability by sending a crafted SSL/TLS message to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Note: Datagram TLS (DTLS) messages cannot be used to exploit this vulnerability. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-tls-decrypt-dos-BMxYjm8M • CWE-20: Improper Input Validation CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 8.6EPSS: 0%CPEs: 20EXPL: 0CVE-2021-34781 – Cisco Firepower Threat Defense Software SSH Connections Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2021-34781
A vulnerability in the processing of SSH connections for multi-instance deployments of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device. This vulnerability is due to a lack of proper error handling when an SSH session fails to be established. An attacker could exploit this vulnerability by sending a high rate of crafted SSH connections to the instance. A successful exploit could allow the attacker to cause resource exhaustion, which causes a DoS condition on the affected device. The device must be manually reloaded to recover. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-dos-rUDseW3r • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-755: Improper Handling of Exceptional Conditions •
CVSS: 6.1EPSS: 0%CPEs: 25EXPL: 0CVE-2021-34764 – Cisco Firepower Management Center Software Cross-Site Scripting and Open Redirect Vulnerabilities
https://notcve.org/view.php?id=CVE-2021-34764
Multiple vulnerabilities in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an attacker to execute a cross-site scripting (XSS) attack or an open redirect attack. For more information about these vulnerabilities, see the Details section of this advisory. Varias vulnerabilidades en la interfaz de administración basada en la web del software Cisco Firepower Management Center (FMC) podrían permitir a un atacante ejecutar un ataque de tipo cross-site scripting (XSS) o un ataque de redireccionamiento abierto. Para conseguir más información sobre estas vulnerabilidades, consulte la sección Detalles de este aviso • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-xss-openredir-TVPMWJyg • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE-601: URL Redirection to Untrusted Site ('Open Redirect') •
CVSS: 4.8EPSS: 0%CPEs: 25EXPL: 0CVE-2021-34763 – Cisco Firepower Management Center Software Cross-Site Scripting and Open Redirect Vulnerabilities
https://notcve.org/view.php?id=CVE-2021-34763
Multiple vulnerabilities in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an attacker to execute a cross-site scripting (XSS) attack or an open redirect attack. For more information about these vulnerabilities, see the Details section of this advisory. Varias vulnerabilidades en la interfaz de administración basada en la web del software Cisco Firepower Management Center (FMC) podrían permitir a un atacante ejecutar un ataque de tipo cross-site scripting (XSS) o un ataque de redireccionamiento abierto. Para conseguir más información sobre estas vulnerabilidades, consulte la sección Detalles de este aviso • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-xss-openredir-TVPMWJyg • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE-601: URL Redirection to Untrusted Site ('Open Redirect') •
CVSS: 8.1EPSS: 0%CPEs: 22EXPL: 0CVE-2021-34762 – Cisco Firepower Management Center Software Authenticated Directory Traversal Vulnerability
https://notcve.org/view.php?id=CVE-2021-34762
A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to perform a directory traversal attack on an affected device. The attacker would require valid device credentials. The vulnerability is due to insufficient input validation of the HTTPS URL by the web-based management interface. An attacker could exploit this vulnerability by sending a crafted HTTPS request that contains directory traversal character sequences to an affected device. A successful exploit could allow the attacker to read or write arbitrary files on the device. • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-dir-traversal-95UyW5tk • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-26: Path Traversal: '/dir/../filename' •