{"id":34382,"date":"2025-05-04T11:00:37","date_gmt":"2025-05-04T11:00:37","guid":{"rendered":""},"modified":"2025-06-15T11:17:46","modified_gmt":"2025-06-15T17:17:46","slug":"cve-2024-0207-wireshark-4-2-0-http3-dissector-crash-causing-denial-of-service","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2024-0207-wireshark-4-2-0-http3-dissector-crash-causing-denial-of-service\/","title":{"rendered":"CVE-2024-0207: Wireshark 4.2.0 HTTP3 Dissector Crash Causing Denial of Service<\/strong>"},"content":{"rendered":"

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

Wireshark, the widely-used network protocol analyzer, has been found to harbor a critical vulnerability tagged as CVE-2024-0207. This vulnerability affects Wireshark v4.2.0 and could potentially lead to a denial of service (DoS) attack. An attacker could exploit<\/a> this weakness through packet injection or a meticulously crafted capture file, which would crash the HTTP3 dissector. The vulnerability is significant as it could potentially lead to a system compromise<\/a> or data leakage, making it a substantial threat to the integrity, availability, and confidentiality of information.<\/p>\n

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

CVE ID: CVE-2024-0207
\nSeverity: High (7.8 CVSS)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system<\/a> compromise or data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Wireshark | 4.2.0<\/p>\n

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

The vulnerability stems from the HTTP3 dissector module within Wireshark<\/a> 4.2.0. An attacker can leverage this vulnerability by injecting<\/a> malicious packets into the network stream being analyzed or crafting a capture file that triggers the bug. This crash could lead to potential system<\/a> compromise, data leakage, or denial of service, rendering the system unresponsive and unavailable for legitimate users.<\/p>\n

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

Below is a conceptual example of an HTTP3 packet that could be used to exploit this vulnerability<\/a>. Please note that this is a simplified representation and a real-world attack would require a more complex payload.<\/p>\n

POST \/ HTTP\/3\nHost: target.example.com\nContent-Type: application\/http3\n{ \"malicious_packet\": \"Exploit_CVE-2024-0207\" }<\/code><\/pre>\n
Upon receiving this packet, the HTTP3 dissector in Wireshark 4.2.0 would crash, causing a denial of service<\/a>. If the attacker has additional exploits at their disposal, they could potentially escalate this attack to compromise the system or leak data<\/a>.<\/p>\n
Mitigation<\/strong><\/p>\n
Users of the affected Wireshark version are strongly recommended to apply the vendor-supplied patch promptly. In case the patch cannot be applied immediately, users can employ a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as a temporary mitigation measure. These systems can be configured<\/a> to detect and block the malicious packets associated with this exploit, minimizing the risk of a successful attack.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview Wireshark, the widely-used network protocol analyzer, has been found to harbor a critical vulnerability tagged as CVE-2024-0207. This vulnerability affects Wireshark v4.2.0 and could potentially lead to a denial of service (DoS) attack. An attacker could exploit this weakness through packet injection or a meticulously crafted capture file, which would crash the HTTP3 dissector. […]<\/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":[87],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-34382","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-dos"],"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