Vulnerability Details CVE-2021-24020
A missing cryptographic step in the implementation of the hash digest algorithm in FortiMail 6.4.0 through 6.4.4, and 6.2.0 through 6.2.7 may allow an unauthenticated attacker to tamper with signed URLs by appending further data which allows bypass of signature verification.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 39.2%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 7.5
References
Products affected by CVE-2021-24020
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cpe:2.3:a:fortinet:fortimail:6.2.0
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cpe:2.3:a:fortinet:fortimail:6.2.1
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cpe:2.3:a:fortinet:fortimail:6.2.2
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cpe:2.3:a:fortinet:fortimail:6.2.3
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cpe:2.3:a:fortinet:fortimail:6.2.4
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cpe:2.3:a:fortinet:fortimail:6.2.5
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cpe:2.3:a:fortinet:fortimail:6.2.6
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cpe:2.3:a:fortinet:fortimail:6.2.7
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cpe:2.3:a:fortinet:fortimail:6.4.0
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cpe:2.3:a:fortinet:fortimail:6.4.1
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cpe:2.3:a:fortinet:fortimail:6.4.2
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cpe:2.3:a:fortinet:fortimail:6.4.3
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cpe:2.3:a:fortinet:fortimail:6.4.4