CVE-2018-3969

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 vulnerabilit...

CVE-2018-4003

The CVE-2018-4003 issue affects CUJO Smart Firewall (firmware 7003) in the mdnscap mDNS parser. A heap-based buffer overflow occurs when parsing string lengths in mDNS resource records, allowing an unauthenticated remote attacker to trigger arbitrary code execution in the mdnscap process; exploit...

CVE-2018-4003

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 process. ...

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...

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...

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 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...

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 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 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 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...

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...

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...

Webroot BrightCloud SDK HTTP headers-parsing code execution vulnerability

Summary An exploitable buffer overflow vulnerability exists in the HTTP header-parsing function of the Webroot BrightCloud SDK. The function bchttpreadheader incorrectly handles overlong headers, leading to arbitrary code execution. An unauthenticated attacker could impersonate a remote BrightClo...

Webroot BrightCloud SDK HTTP connection unsafe defaults vulnerability

Summary An exploitable vulnerability exists in the HTTP client functionality of the Webroot BrightCloud SDK. The configuration of the HTTP client does not enforce a secure connection by default, resulting in a failure to validate TLS certificates. An attacker could impersonate a remote BrightClou...