Sensitive Information Disclosure in Fortinet FortiOS and FortiProxy Products
CVE-2021-43206

4.3MEDIUM

Key Information:

Vendor

Fortinet
Status
Fortinet FortiOS, Fortiproxy
Vendor
CVE Published:
4 May 2022

What is CVE-2021-43206?

A vulnerability in Fortinet's FortiOS and FortiProxy allows attackers to exploit server-generated error messages that disclose sensitive information. Specifically, the flaw exists in versions 7.0.0 through 7.0.3 and earlier versions of FortiOS, as well as specific FortiProxy versions. This vulnerability can be exploited by malicious web servers to retrieve client usernames and IP addresses through same-origin HTTP requests that trigger proxy-generated HTTP status code pages.

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Affected Version(s)

Fortinet FortiOS, FortiProxy FortiOS 7.0.3, 7.0.2, 7.0.1, 7.0.0, 6.4.8, 6.4.7, 6.4.6, 6.4.5, 6.4.4, 6.4.3, 6.4.2, 6.4.1, 6.4.0, 6.2.10, 6.2.9, 6.2.8, 6.2.7, 6.2.6, 6.2.5, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0, 6.0.14, 6.0.13, 6.0.12, 6.0.11, 6.0.10, 6.0.9, 6.0.8, 6.0.7, 6.0.6, 6.0.5, 6.0.4, 6.0.3, 6.0.2, 6.0.1, 6.0.0, 5.6.14, 5.6.13, 5.6.12, 5.6.11, 5.6.10, 5.6.9, 5.6.8, 5.6.7, 5.6.6, 5.6.5, 5.6.4, 5.6.3, 5.6.2, 5.6.1, 5.6.0; FortiProxy 7.0.1, 7.0.0, 2.0.7, 2.0.6, 2.0.5, 2.0.4, 2.0.3, 2.0.2, 2.0.1, 2.0.0

References

https://fortiguard.com/psirt/FG-IR-21-231
x_refsource_CONFIRM

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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