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Kr00k is an information disclosure vulnerability in Broadcom and Cypress FullMAC Wi-Fi chipsets that affects WPA2-protected wireless communications. After a disassociation event between a client and an access point, the vulnerable WLAN implementation can enter an erroneous internal state transition and transmit certain unicast data frames encrypted with an all-zero Temporal Key instead of the negotiated session key. An attacker in radio proximity can capture those frames and decrypt a limited subset of wireless traffic without knowing the WPA2 credentials or session keys. The issue affects Wi-Fi-layer protection rather than higher-layer protections such as TLS, and has been observed against WPA2-Personal and WPA2-Enterprise deployments using AES-CCMP.
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3 valid exploits after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a proof-of-concept exploit for the KR00K vulnerability (CVE-2019-15126), which affects certain Wi-Fi chips (notably Broadcom and Cypress) in both access points and clients. The exploit consists of a single Python script, 'kr00ker.py', and a README file. The script requires a wireless interface in monitor mode and uses the 'scapy' and 'Cryptodome' Python libraries. It works by sending disassociation frames to the target device (either AP or client), which may cause the device to enter a vulnerable state where it uses an all-zero temporal key (TK) for WPA2 CCMP encryption. The script then captures WPA2 CCMP packets and attempts to decrypt them using this key. If successful, decrypted data is displayed and saved to a pcap file. The README provides detailed usage instructions, prerequisites, and example commands. The exploit is a functional proof-of-concept and does not include weaponized or automated payloads beyond the described attack flow.
This repository provides a proof-of-concept (PoC) exploit for CVE-2019-15126, also known as the 'kr00k' vulnerability, which affects certain Broadcom and Cypress WiFi chips. The main exploit script, 'r00kie-kr00kie.py', enables an attacker with a compatible WiFi card (supporting monitor mode and frame injection) to perform a deauthentication attack against a victim, capture encrypted WiFi packets, and then decrypt them by exploiting the kr00k vulnerability. The decrypted packets are saved to a PCAP file for analysis. The script requires the attacker to specify the wireless interface, channel, BSSID (AP MAC), and client MAC address. The repository also includes 'traffic_generator.py', a helper script to generate UDP traffic (by default to 8.8.8.8:53) from the victim, which can be used to demonstrate the exploit's effectiveness. The exploit is written in Python and depends on 'scapy' and 'pycryptodomex'. The repository is structured with clear separation between the main exploit, traffic generation, and documentation. No fake or malicious code is present; this is a legitimate PoC for research and educational purposes.
This repository is a Proof-of-Concept (PoC) exploit for the Kr00k vulnerability (CVE-2019-15126), which affects certain Broadcom and Cypress Wi-Fi chips. The main file, kr00k.py, is a Python script that automates the exploitation process. It first kills interfering processes and puts the specified wireless interface into monitor mode. The script then sends disassociation packets to a target Wi-Fi client (specified by MAC address), forcing it to disconnect. While the client reconnects, the script captures WPA2-CCMP encrypted packets and attempts to decrypt them using an all-zero temporal key, exploiting the Kr00k flaw. If decryption is successful, the plaintext packets are optionally saved to a user-specified file. The repository includes a requirements.txt for dependencies and a README.md with usage instructions. No hardcoded network endpoints or IP addresses are present, but the script interacts with local wireless interfaces and files. The exploit is a PoC and requires specific hardware and root privileges to operate.
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A firmware vulnerability affecting Wi-Fi devices that can cause transmissions to be encrypted with an all-zero key, enabling easy decryption of traffic.
A vulnerability known as Kr00k that allows unauthorized decryption of some WPA2-encrypted traffic in devices using certain Broadcom and Cypress WiFi chips, including some ASUS routers.
A Wi‑Fi (WPA2) information disclosure/decryption vulnerability in certain Wi‑Fi chip implementations (initially Broadcom and Cypress; similar issues later noted in Qualcomm and MediaTek) that can allow decryption of some WPA2-encrypted traffic, potentially enabling eavesdropping.
A Wi-Fi chip vulnerability in Broadcom and Cypress FullMac chips that can cause devices to use an all-zero Temporal Key after disassociation, allowing unauthorized decryption of some WPA2-encrypted network traffic.
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