What it is about

Cisco Secure Firewall Threat Defense ist eine Sicherheitslösung, die Funktionen wie Firewall, Intrusion Prevention und erweiterten Malware-Schutz in einer einzigen Appliance integriert. Die Cisco ASA Appliance bietet Funktionen zur Sicherung von Anwendungssoftware, wie beispielsweise Firewall oder VPN. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Cisco Secure Firewall Threat Defense und Cisco ASA (Adaptive Security Appliance) ausnutzen, um einen Denial of Service Angriff durchzuführen.

Under what conditions?

Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.

What can happen in the worst case

An attacker could use the vulnerability to

• einen Denial of Service Angriff durchzuführen

Am I affected?

Affected according to the BSI:

• Cisco Secure Firewall Threat Defense <7.0.11
• Cisco Secure Firewall Threat Defense <7.2.13
• Cisco Secure Firewall Threat Defense <7.4.9
• Cisco Secure Firewall Threat Defense <7.6.7
• Cisco Secure Firewall Threat Defense <7.7.14
• Cisco Secure Firewall Threat Defense <10.0.3
• Cisco Secure Firewall Threat Defense <10.1.1
• Cisco ASA (Adaptive Security Appliance) <9.16.4.104
• Cisco ASA (Adaptive Security Appliance) <9.18.4.96
• Cisco ASA (Adaptive Security Appliance) <9.20.4.50
• Cisco ASA (Adaptive Security Appliance) <9.22.3.200
• Cisco ASA (Adaptive Security Appliance) <9.23.1.48

and 2 more

The installed version is usually shown under “Help → About” or in the device’s admin interface.

What helps?

Update to at least:

• Cisco Secure Firewall Threat Defense 7.0.11
• Cisco Secure Firewall Threat Defense 7.2.13
• Cisco Secure Firewall Threat Defense 7.4.9
• Cisco Secure Firewall Threat Defense 7.6.7
• Cisco Secure Firewall Threat Defense 7.7.14
• Cisco Secure Firewall Threat Defense 10.0.3
• Cisco Secure Firewall Threat Defense 10.1.1
• Cisco ASA (Adaptive Security Appliance) 9.16.4.104
• Cisco ASA (Adaptive Security Appliance) 9.18.4.96
• Cisco ASA (Adaptive Security Appliance) 9.20.4.50
• Cisco ASA (Adaptive Security Appliance) 9.22.3.200
• Cisco ASA (Adaptive Security Appliance) 9.23.1.48

Is the vulnerability already being exploited?

None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.