{"id":56039,"date":"2025-06-30T00:35:18","date_gmt":"2025-06-30T00:35:18","guid":{"rendered":""},"modified":"2025-08-30T04:38:32","modified_gmt":"2025-08-30T10:38:32","slug":"cve-2025-5868-critical-vulnerability-in-rt-thread-leading-to-system-compromise-and-data-leakage","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-5868-critical-vulnerability-in-rt-thread-leading-to-system-compromise-and-data-leakage\/","title":{"rendered":"CVE-2025-5868: Critical Vulnerability in RT-Thread Leading to System Compromise and Data Leakage<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

A critical vulnerability, identified as CVE-2025-5868, has been detected in RT-Thread 5.1.0. Affecting the sys_thread_sigprocmask function in rt-thread\/components\/lwp\/lwp_syscall.c, this vulnerability poses a significant threat to systems running the aforementioned version of RT-Thread. With a CVSS Severity Score of 8.0, the vulnerability has the potential to lead to system<\/a> compromise or data leakage, thus causing significant damage to the affected system or organization.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-5868
\nSeverity: Critical (8.0)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System compromise and potential<\/a> data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

RT-Thread | 5.1.0<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability arises from an improper<\/a> validation of an array index in the sys_thread_sigprocmask function of the file rt-thread\/components\/lwp\/lwp_syscall.c. The manipulation of the ‘how’ argument, which is intended to specify the way in which the function should behave, can lead to an out-of-bounds read<\/a> or write. An attacker can exploit this flaw to execute arbitrary code<\/a> or access sensitive information, leading to system compromise or data leakage.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

To illustrate how this vulnerability<\/a> might be exploited, consider the following conceptual pseudocode:<\/p>\n

#include \"rt-thread\/components\/lwp\/lwp_syscall.h\"\nint main() {\n\/\/ Create a malicious payload\nchar malicious_payload[512];\nmemset(malicious_payload, 'A', 512);\n\/\/ Call the vulnerable function with the malicious payload as the 'how' argument\nsys_thread_sigprocmask(malicious_payload, NULL, NULL);\nreturn 0;\n}<\/code><\/pre>\n
In this example, a buffer overflow<\/a> is created by providing an oversized ‘how’ argument to the sys_thread_sigprocmask function. This could potentially result in arbitrary code execution or unauthorized<\/a> access to sensitive data.<\/p>\n
Mitigation<\/strong><\/p>\n
The recommended mitigation strategy for this vulnerability<\/a> is to apply the latest patch provided by the vendor. In situations where immediate patching is not feasible, utilizing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. Organizations should also consider implementing secure coding practices to help prevent such vulnerabilities<\/a> in the future.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview A critical vulnerability, identified as CVE-2025-5868, has been detected in RT-Thread 5.1.0. Affecting the sys_thread_sigprocmask function in rt-thread\/components\/lwp\/lwp_syscall.c, this vulnerability poses a significant threat to systems running the aforementioned version of RT-Thread. With a CVSS Severity Score of 8.0, the vulnerability has the potential to lead to system compromise or data leakage, thus causing […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[86,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-56039","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-rce"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t