CVE-2017-2909

An infinite loop programming error exists in the DNS server functionality of Cesanta Mongoose 6.8 library. A specially crafted DNS request can cause an infinite loop resulting in high CPU usage and Denial Of Service. An attacker can send a packet over the network to trigger this vulnerability...

CVE-2017-2891

An exploitable use-after-free vulnerability exists in the HTTP server implementation of Cesanta Mongoose 6.8. An ordinary HTTP POST request with a CGI target can cause a reuse of previously freed pointer potentially resulting in remote code execution. An attacker needs to send this HTTP request...

CVE-2017-2922

An exploitable memory corruption vulnerability exists in the Websocket protocol implementation of Cesanta Mongoose 6.8. A specially crafted websocket packet can cause a buffer to be allocated while leaving stale pointers which leads to a use-after-free vulnerability which can be exploited to...

CVE-2017-2892

An exploitable arbitrary memory read vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8. A specially crafted MQTT packet can cause an arbitrary out-of-bounds memory read and write potentially resulting in information disclosure, denial of service and remote code...

CVE-2017-2922

CVE-2017-2922 affects Cesanta Mongoose 6.8 (Websocket protocol handling). A memory corruption via fragmented WebSocket frames can trigger a use-after-free when reassembling data in mg_deliver_websocket_data, due to a buffer resize that invalidates pointers and leads to reads/writes on freed memor...

CVE-2017-2895

The CVE-2017-2895 issue affects Cesanta Mongoose 6.8 in its MQTT SUBSCRIBE packet parsing. The root cause is a missing bounds check when parsing topic length (topic->len read from the packet) before using it to locate the QoS byte, enabling an out-of-bounds read from the message payload. This ...

CVE-2017-2894

CVE-2017-2894 describes an exploitable stack buffer overflow in Cesanta Mongoose 6.8, specifically in the MQTT SUBSCRIBE handling. The root cause is in mg_mqtt_broker_handle_subscribe where a fixed-size qoss buffer (512) is filled without bounds checks, allowing a SUBSCRIBE packet with many topic...

CVE-2017-2895

An exploitable arbitrary memory read vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8. A specially crafted MQTT SUBSCRIBE packet can cause an arbitrary out-of-bounds memory read potentially resulting in information disclosure and denial of service. An attacker...

CVE-2017-2891

Cesanta Mongoose 6.8 is affected by a use-after-free vulnerability in its HTTP server CGI handling. In this CVE, an ordinary HTTP POST targeting a CGI script can cause a previously freed mg_connection structure to be dereferenced later in mg_cgi_ev_handler, potentially enabling remote code execut...

CVE-2017-2922

An exploitable memory corruption vulnerability exists in the Websocket protocol implementation of Cesanta Mongoose 6.8. A specially crafted websocket packet can cause a buffer to be allocated while leaving stale pointers which leads to a use-after-free vulnerability which can be exploited to...

CVE-2017-2921

Cesanta Mongoose 6.8 Websocket implementation contains a memory corruption flaw in websocket frame handling. During parsing, an integer overflow in data_len/frame_len calculations can cause a large, misvalidated memory write in mg_deliver_websocket_data, leading to a heap-buffer-overflow. Reporte...

CVE-2017-2909

CVE-2017-2909 affects Cesanta Mongoose 6.8 library’s DNS server functionality. A crafted DNS query/response can trigger an infinite loop in DNS name compression handling, causing high CPU usage and a Denial of Service when sent over the network. Connected advisories describe the issue but do not ...

CVE-2017-2894

An exploitable stack buffer overflow vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8. A specially crafted MQTT SUBSCRIBE packet can cause a stack buffer overflow resulting in remote code execution. An attacker needs to send a specially crafted MQTT packet ove...

CVE-2017-2891

An exploitable use-after-free vulnerability exists in the HTTP server implementation of Cesanta Mongoose 6.8. An ordinary HTTP POST request with a CGI target can cause a reuse of previously freed pointer potentially resulting in remote code execution. An attacker needs to send this HTTP request...

CVE-2017-2893

CVE-2017-2893 affects Cesanta Mongoose 6.8 (MQTT server component). The vulnerability is a NULL pointer dereference in the MQTT SUBSCRIBE handling path (mg_mqtt_broker_handle_subscribe) caused by dereferencing an uninitialized or NULL session pointer (nc->user_data) when processing SUBSCRIBE t...

CVE-2017-2895

An exploitable arbitrary memory read vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8. A specially crafted MQTT SUBSCRIBE packet can cause an arbitrary out-of-bounds memory read potentially resulting in information disclosure and denial of service. An attacker...

CVE-2017-2921

An exploitable memory corruption vulnerability exists in the Websocket protocol implementation of Cesanta Mongoose 6.8. A specially crafted websocket packet can cause an integer overflow, leading to a heap buffer overflow and resulting in denial of service and potential remote code execution. An...

Cesanta Mongoose HTTP Server Remote Code Execution Vulnerability

Cesanta Mongoose is a suite of embedded servers from Cesanta, Ireland. A remote code execution vulnerability exists in the HTTP server implementation in Cesanta Mongoose version 6.8. A remote attacker could exploit this vulnerability by sending an HTTP request to execute code...

Cesanta Mongoose MQTT Denial of Service Vulnerability

Cesanta Mongoose is a suite of embedded servers from Cesanta, Ireland. A denial of service vulnerability exists in the MQTT packet parsing feature in Cesanta Mongoose version 6.8. An attacker can exploit this vulnerability to cause a denial of service null pointer backreference and server crash b...

Cesanta Mongoose MQTT Remote Code Execution Vulnerability (CNVD-2017-33389)

Cesanta Mongoose is a suite of embedded servers from Cesanta, Ireland. A remote code execution vulnerability exists in the MQTT packet parsing feature in Cesanta Mongoose version 6.8. A remote attacker can exploit this vulnerability by sending specially crafted MQTT packets to execute code...