Vulnerability Details CVE-2021-32706
Pi-hole's Web interface provides a central location to manage a Pi-hole instance and review performance statistics. Prior to Pi-hole Web interface version 5.5.1, the `validDomainWildcard` preg_match filter allows a malicious character through that can be used to execute code, list directories, and overwrite sensitive files. The issue lies in the fact that one of the periods is not escaped, allowing any character to be used in its place. A patch for this vulnerability was released in version 5.5.1.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.61
EPSS Ranking 98.2%
CVSS Severity
CVSS v3 Score 7.6
CVSS v2 Score 6.5
References
Products affected by CVE-2021-32706
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cpe:2.3:a:pi-hole:pi-hole:2.0
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cpe:2.3:a:pi-hole:pi-hole:2.1
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cpe:2.3:a:pi-hole:pi-hole:2.10
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cpe:2.3:a:pi-hole:pi-hole:2.10.2
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cpe:2.3:a:pi-hole:pi-hole:2.11
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cpe:2.3:a:pi-hole:pi-hole:2.11.1
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cpe:2.3:a:pi-hole:pi-hole:2.11.2
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cpe:2.3:a:pi-hole:pi-hole:2.12
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cpe:2.3:a:pi-hole:pi-hole:2.12.1
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cpe:2.3:a:pi-hole:pi-hole:2.13
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cpe:2.3:a:pi-hole:pi-hole:2.13.1
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cpe:2.3:a:pi-hole:pi-hole:2.13.2
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cpe:2.3:a:pi-hole:pi-hole:2.2
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cpe:2.3:a:pi-hole:pi-hole:2.3
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cpe:2.3:a:pi-hole:pi-hole:2.4
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cpe:2.3:a:pi-hole:pi-hole:2.5
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cpe:2.3:a:pi-hole:pi-hole:2.5.1
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cpe:2.3:a:pi-hole:pi-hole:2.5.2
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cpe:2.3:a:pi-hole:pi-hole:2.5.3
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cpe:2.3:a:pi-hole:pi-hole:2.6
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cpe:2.3:a:pi-hole:pi-hole:2.6.1
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cpe:2.3:a:pi-hole:pi-hole:2.6.1.1
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cpe:2.3:a:pi-hole:pi-hole:2.6.1.2
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cpe:2.3:a:pi-hole:pi-hole:2.6.2
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cpe:2.3:a:pi-hole:pi-hole:2.6.3
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cpe:2.3:a:pi-hole:pi-hole:2.7
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cpe:2.3:a:pi-hole:pi-hole:2.7.1
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cpe:2.3:a:pi-hole:pi-hole:2.8
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cpe:2.3:a:pi-hole:pi-hole:2.8.1
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cpe:2.3:a:pi-hole:pi-hole:2.9
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cpe:2.3:a:pi-hole:pi-hole:2.9.1
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cpe:2.3:a:pi-hole:pi-hole:2.9.2
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cpe:2.3:a:pi-hole:pi-hole:2.9.3
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cpe:2.3:a:pi-hole:pi-hole:2.9.4
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cpe:2.3:a:pi-hole:pi-hole:2.9.5
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cpe:2.3:a:pi-hole:pi-hole:3.0
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cpe:2.3:a:pi-hole:pi-hole:3.0.1
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cpe:2.3:a:pi-hole:pi-hole:3.1
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cpe:2.3:a:pi-hole:pi-hole:3.1.4
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cpe:2.3:a:pi-hole:pi-hole:3.2
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cpe:2.3:a:pi-hole:pi-hole:3.2.1
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cpe:2.3:a:pi-hole:pi-hole:3.3
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cpe:2.3:a:pi-hole:pi-hole:3.3.1
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cpe:2.3:a:pi-hole:pi-hole:4.0
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cpe:2.3:a:pi-hole:pi-hole:4.1
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cpe:2.3:a:pi-hole:pi-hole:4.1.1
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cpe:2.3:a:pi-hole:pi-hole:4.2
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cpe:2.3:a:pi-hole:pi-hole:4.2.1
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cpe:2.3:a:pi-hole:pi-hole:4.2.2
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cpe:2.3:a:pi-hole:pi-hole:4.3
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cpe:2.3:a:pi-hole:pi-hole:4.3.1
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cpe:2.3:a:pi-hole:pi-hole:4.3.2
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cpe:2.3:a:pi-hole:pi-hole:4.3.3
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cpe:2.3:a:pi-hole:pi-hole:4.3.4
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cpe:2.3:a:pi-hole:pi-hole:4.3.5
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cpe:2.3:a:pi-hole:pi-hole:4.4
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cpe:2.3:a:pi-hole:pi-hole:5.0
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cpe:2.3:a:pi-hole:pi-hole:5.1
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cpe:2.3:a:pi-hole:pi-hole:5.1.1
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cpe:2.3:a:pi-hole:pi-hole:5.2
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cpe:2.3:a:pi-hole:pi-hole:5.2.1
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cpe:2.3:a:pi-hole:pi-hole:5.2.2
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cpe:2.3:a:pi-hole:pi-hole:5.2.3
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cpe:2.3:a:pi-hole:pi-hole:5.2.4
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cpe:2.3:a:pi-hole:pi-hole:5.3
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cpe:2.3:a:pi-hole:pi-hole:5.3.1
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cpe:2.3:a:pi-hole:pi-hole:5.3.2
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cpe:2.3:a:pi-hole:pi-hole:5.4
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cpe:2.3:a:pi-hole:pi-hole:5.5