Vulnerability Details CVE-2021-34807
An open redirect vulnerability exists in the /preauth Servlet in Zimbra Collaboration Suite through 9.0. To exploit the vulnerability, an attacker would need to have obtained a valid zimbra auth token or a valid preauth token. Once the token is obtained, an attacker could redirect a user to any URL via isredirect=1&redirectURL= in conjunction with the token data (e.g., a valid authtoken= value).
Exploit prediction scoring system (EPSS) score
EPSS Score 0.009
EPSS Ranking 74.2%
CVSS Severity
CVSS v3 Score 6.1
CVSS v2 Score 5.8
References
- https://wiki.zimbra.com/wiki/Security_Center
- https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P23
- https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P16
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
- https://wiki.zimbra.com/wiki/Security_Center
- https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P23
- https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P16
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
Products affected by CVE-2021-34807
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cpe:2.3:a:zimbra:collaboration:-
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cpe:2.3:a:zimbra:collaboration:8.7.10
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cpe:2.3:a:zimbra:collaboration:8.7.11
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cpe:2.3:a:zimbra:collaboration:8.7.6
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cpe:2.3:a:zimbra:collaboration:8.7.7
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cpe:2.3:a:zimbra:collaboration:8.7.9
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cpe:2.3:a:zimbra:collaboration:8.8
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cpe:2.3:a:zimbra:collaboration:8.8.0
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cpe:2.3:a:zimbra:collaboration:8.8.10
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cpe:2.3:a:zimbra:collaboration:8.8.11
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cpe:2.3:a:zimbra:collaboration:8.8.12
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cpe:2.3:a:zimbra:collaboration:8.8.15
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cpe:2.3:a:zimbra:collaboration:8.8.2
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cpe:2.3:a:zimbra:collaboration:8.8.3
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cpe:2.3:a:zimbra:collaboration:8.8.4
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cpe:2.3:a:zimbra:collaboration:8.8.6
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cpe:2.3:a:zimbra:collaboration:8.8.7
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cpe:2.3:a:zimbra:collaboration:8.8.8
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cpe:2.3:a:zimbra:collaboration:8.8.9
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cpe:2.3:a:zimbra:collaboration:9.0.0