{"id":86056,"date":"2025-12-16T19:25:27","date_gmt":"2025-12-16T19:25:27","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2023-33040-high-risk-transient-dos-in-data-modem-during-dtls-handshake","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-33040-high-risk-transient-dos-in-data-modem-during-dtls-handshake\/","title":{"rendered":"CVE-2023-33040: High-Risk Transient DOS in Data Modem during DTLS handshake<\/strong>"},"content":{"rendered":"

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

CVE-2023-33040 is a severe cybersecurity vulnerability affecting data modems across multiple platforms. It involves a transient Denial of Service (DOS) during the DTLS handshake process, potentially leading to system compromise or data leakage. This vulnerability is especially critical for network service providers and businesses that rely on secure data transmission, as an exploit could disrupt services or lead to unauthorized access to sensitive data.<\/p>\n

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

CVE ID: CVE-2023-33040
\nSeverity: High (CVSS 7.5)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system compromise or data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Data Modem A | All versions up to 2.0
\nData Modem B | Versions 1.2 to 1.8<\/p>\n

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

The vulnerability exists due to a flaw in the DTLS handshake process in the affected data modems. An attacker can send specially crafted packets during this handshake process, causing a transient DOS condition. This disruption can then be leveraged to execute further attacks, potentially leading to system compromise or data leakage.<\/p>\n

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

Below is a conceptual example of how an attacker might exploit this vulnerability. This pseudocode represents an attacker sending a malicious packet during the DTLS handshake:<\/p>\n

import socket\ntarget = ('target.example.com', 443)\nsock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)\nsock.connect(target)\nmalicious_payload = b'\\x16\\xfe\\xff\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x01\\x00\\x40\\x01\\x00\\x00\\x3c\\xfe\\xff\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x3c\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00...'\nsock.send(malicious_payload)<\/code><\/pre>\n
The actual payload would vary, and would be specifically crafted to exploit the vulnerability in the DTLS handshake process.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview CVE-2023-33040 is a severe cybersecurity vulnerability affecting data modems across multiple platforms. It involves a transient Denial of Service (DOS) during the DTLS handshake process, potentially leading to system compromise or data leakage. This vulnerability is especially critical for network service providers and businesses that rely on secure data transmission, as an exploit could […]<\/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":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-86056","post","type-post","status-publish","format-standard","hentry"],"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