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| Rule General Information |
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| Release Date: | 2020-08-31 | |
| Rule Name: | FortiOS SSL VPN Pre-Auth Messages Payload Buffer Overflow Vulnerability (CVE-2018-13381) | |
| Severity: | ||
| CVE ID: | ||
| Rule Protection Details |
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| Description: | A buffer overflow vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.7, 5.4 and below versions under SSL VPN web portal allows a non-authenticated attacker to perform a Denial-of-service attack via special craft message payloads. | |
| Impact: | A buffer overflow vulnerability can be triggered by an attacker in the context of the vulnerable product. Further attacks includes arbitrary code execution and denial of service. | |
| Affected OS: | Windows, Linux | |
| Reference: | SecurityFocusBID:108440 https://devco.re/blog/2019/08/09/attacking-ssl-vpn-part-2-breaking-the-Fortigate-ssl-vpn/ https://fortiguard.com/advisory/FG-IR-18-387 |
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| Solutions |
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| The vendors have released upgrade patches to fix vulnerabilities, please visit: https://fortiguard.com/psirt/FG-IR-18-387 |