Administrative account takeover via predictable authentication token
Published Mar 1, 2022 · Updated Oct 25, 2024
Improper authentication in Fortinet FortiMail before 7.0.1 allows remote attackers to guess an administrator's authentication token. The authentication flow uses observable system properties in a way that makes one administrative account's token efficiently guessable, but Fortinet has not disclosed the affected endpoint or token-generation routine. Network access to the affected authentication service is sufficient, and a recovered token grants that administrative account's access.
Summary
What happened
Improper authentication in Fortinet FortiMail before 7.0.1 allows remote attackers to guess an administrator's authentication token. The authentication flow uses observable system properties in a way that makes one administrative account's token efficiently guessable, but Fortinet has not disclosed the affected endpoint or token-generation routine. Network access to the affected authentication service is sufficient, and a recovered token grants that administrative account's access.
The record
- CVE
- CVE-2021-36166
- Published
- Mar 1, 2022
- Updated
- Oct 25, 2024
- Vendor
- Fortinet
- Product
- FortiMail
- Classifications
- CWE-287, CWE-330, T1110
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 1, 2022CVE publishedPublication date reported by the CVE source.
- Oct 25, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=FortiMail before 7.0.1
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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