{"id":86177,"date":"2026-01-01T08:02:41","date_gmt":"2026-01-01T08:02:41","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2023-37930-uninitialized-resources-and-excessive-iteration-vulnerabilities-in-fortinet-ssl-vpn-webmode","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-37930-uninitialized-resources-and-excessive-iteration-vulnerabilities-in-fortinet-ssl-vpn-webmode\/","title":{"rendered":"CVE-2023-37930: Uninitialized Resources and Excessive Iteration Vulnerabilities in Fortinet SSL VPN Webmode<\/strong>"},"content":{"rendered":"

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

This report analyzes the critical vulnerabilities identified as CVE-2023-37930 found in Fortinet’s FortiOS and FortiProxy SSL VPN Webmode. These vulnerabilities can lead to severe consequences, such as system compromise and data leakage, affecting all VPN users who are using the specified version of the software. Given the high-risk factor, this issue requires immediate attention and rectification.<\/p>\n

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

CVE ID: CVE-2023-37930
\nSeverity: High (7.5 CVSS score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: Required
\nImpact: System compromise and potential data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Fortinet FortiOS SSL VPN webmode | 7.4.0, 7.2.0 through 7.2.5, 7.0.1 through 7.0.11, 6.4.7 through 6.4.14
\nFortinet FortiProxy SSL VPN webmode | 7.2.0 through 7.2.6, 7.0.0 through 7.0.12<\/p>\n

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

The vulnerabilities arise from the use of uninitialized resources and excessive iteration, leading to memory corruption. A malicious VPN user can exploit these vulnerabilities by sending specifically crafted requests to the server. The server, after processing these requests, can inadvertently execute code or commands leading to system compromise or data leakage.<\/p>\n

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

Here’s a conceptual example illustrating how a malicious request might be crafted:<\/p>\n

POST \/vpn\/authentication\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{\n\"user\": \"valid_user\",\n\"password\": \"valid_password\",\n\"malicious_command\": \"crafted_command_to_exploit_vulnerability\"\n}<\/code><\/pre>\n
In the above example, the `”malicious_command”` is the payload that exploits the vulnerabilities. The actual payload would depend on the exact mechanisms of the uninitialized resources and excessive iteration vulnerabilities.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview This report analyzes the critical vulnerabilities identified as CVE-2023-37930 found in Fortinet’s FortiOS and FortiProxy SSL VPN Webmode. These vulnerabilities can lead to severe consequences, such as system compromise and data leakage, affecting all VPN users who are using the specified version of the software. Given the high-risk factor, this issue requires immediate attention […]<\/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-86177","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