PT-2019-10733 · Cujo · Cujo Smart Firewall

Name of the Vulnerable Software and Affected Versions: CUJO Smart Firewall affected versions not specified Description: A vulnerability exists in the verified boot protection, allowing a local attacker to add arbitrary shell commands into the dhcpd.conf file. These commands persist across reboots...

PT-2019-10743 · Cujo · Cujo Smart Firewall

Name of the Vulnerable Software and Affected Versions: CUJO Smart Firewall version 7003 Description: A heap overflow issue exists due to incorrect handling of string lengths when parsing character strings in mDNS resource records. This can lead to arbitrary code execution in the context of the...

CUJO Smart Firewall Injection Vulnerability

CUJO Smart Firewall is a home smart firewall device from CUJO USA. An injection vulnerability exists in the configuration of the DHCP daemon in CUJO Smart Firewall using firmware version 7003. An attacker can exploit this vulnerability to execute arbitrary system commands...

CVE-2019-9735

A validation flaw was discovered in the iptables firewall module in OpenStack Neutron. By setting a destination port in a security group rule, along with a protocol that does not support that option for example, VRRP, an authenticated user could block further application of security group rules f...

CUJO Smart Firewall Code Injection Vulnerability

CUJO Smart Firewall is a home smart firewall device from CUJO USA. A code injection vulnerability exists in the Safe Browsing feature in the CUJO Smart Firewall using firmware version 7003. An attacker can exploit this vulnerability by sending an HTTP request to execute arbitrary Lua scripts in t...

CUJO Smart Firewall Integer Overflow Vulnerability

CUJO Smart Firewall is a home smart firewall device from CUJO USA. An integer overflow vulnerability exists in the mdnscap binary in CUJO Smart Firewalls using firmware version 7003, which stems from the program failing to properly handle the 'RDLENGTH' value when parsing SRV records in mDNS...

CUJO Smart Firewall Buffer Overflow Vulnerability

CUJO Smart Firewall is a home smart firewall device from CUJO USA. A buffer overflow vulnerability exists in the CUJO Smart Firewall using firmware version 7003, which stems from the program failing to properly handle the length of a string when parsing a string in an mDNS resource record. An...

CUJO Smart Firewall Privilege Permission and Access Control Vulnerability

CUJO Smart Firewall is a home smart firewall device from CUJO USA. A privilege-granting and access-control vulnerability exists in the Authentication Boot Protection feature in the CUJO Smart Firewall using firmware version 7003. A local attacker can exploit this vulnerability by performing a wri...

CUJO Smart Firewall Denial of Service Vulnerability

CUJO Smart Firewall is a home smart firewall device from CUJO USA. A denial of service vulnerability exists in the mdnscap binary in the CUJO Smart Firewall using firmware version 7003, which stems from the program failing to securely handle compressed pointers when parsing labels in mDNS packets...

Host of Flaws Found in CUJO Smart Firewall

Multiple vulnerabilities have been uncovered in the CUJO Smart Firewall, which is a security hardware device aimed at protecting home networks against malware, phishing websites and hacking attempts. CUJO is widely available, including on Amazon where it has racked up 1,000+ customer reviews. The...

Vulnerability Spotlight: Multiple Vulnerabilities in CUJO Smart Firewall, Das U-Boot, OCTEON SDK, Webroot BrightCloud

Claudio Bozzato of Cisco Talos discovered these vulnerabilities. Executive summary CUJO AI produces the CUJO Smart Firewall, a device that provides protection to home networks against a myriad of threats such as malware, phishing websites and hacking attempts. Cisco Talos recently discovered 11...

CUJO Smart Firewall mdnscap mDNS record parsing code execution vulnerability

Summary An exploitable double free vulnerability exists in the mdnscap binary of the CUJO Smart Firewall. When parsing mDNS packets, a memory space is freed twice if an invalid query name is encountered, leading to arbitrary code execution in the context of the mdnscap process. An unauthenticated...

CUJO Smart Firewall mdnscap mDNS label compression denial-of-service vulnerability

Summary An exploitable denial-of-service vulnerability exists in the mdnscap binary of the CUJO Smart Firewall running firmware 7003. When parsing labels in mDNS packets, the firewall unsafely handles label compression pointers, leading to an uncontrolled recursion that eventually exhausts the...

CUJO Smart Firewall static DHCP hostname command injection vulnerability

Summary An exploitable command injection vulnerability exists in the DHCP daemon configuration of the CUJO Smart Firewall. When adding a new static DHCP address, its corresponding hostname is inserted into the dhcpd.conf file without prior sanitization, allowing for arbitrary execution of system...

CUJO Smart Firewall dhcpd.conf verified boot bypass

Summary An exploitable vulnerability exists in the verified boot protection of the CUJO Smart Firewall. It is possible to add arbitrary shell commands into the dhcpd.conf file, that persist across reboots and firmware updates, and thus allow for executing unverified commands. To trigger this...

Das U-Boot verified boot bypass

Summary An exploitable vulnerability exists in the verified boot protection of the Das U-Boot from version 2013.07-rc1 to 2014.07-rc2. The affected versions lack proper FIT signature enforcement, which allows an attacker to bypass U-Boot’s verified boot and execute an unsigned kernel, embedded in...

CUJO Smart Firewall mdnscap mDNS character-strings code execution vulnerability

Summary An exploitable heap overflow vulnerability exists in the mdnscap binary of the CUJO Smart Firewall running firmware 7003. The string lengths are handled incorrectly when parsing character strings in mDNS resource records, leading to arbitrary code execution in the context of the mdnscap...

CUJO Smart Firewall threatd hostname reputation check code execution vulnerability

Summary An exploitable vulnerability exists in the safe browsing function of the CUJO Smart Firewall, version 7003. The flaw lies in the way the safe browsing function parses HTTP requests. The server hostname is extracted from captured HTTP/HTTPS requests and inserted as part of a Lua statement...

CUJO Smart Firewall mdnscap mDNS SRV record denial-of-service vulnerability

Summary An exploitable integer underflow vulnerability exists in the mdnscap binary of the CUJO Smart Firewall, version 7003. When parsing SRV records in an mDNS packet, the “RDLENGTH” value is handled incorrectly, leading to an out-of-bounds access that crashes the mdnscap process. An...

CUJO Smart Firewall safe browsing Host header-parsing firewall bypass vulnerability

Summary An exploitable vulnerability exists the safe browsing function of the CUJO Smart Firewall, version 7003. The bug lies in the way the safe browsing function parses HTTP requests. The “Host” header is incorrectly extracted from captured HTTP requests, which would allow an attacker to visit...