Vulnerability Details CVE-2021-29479
Ratpack is a toolkit for creating web applications. In versions prior to 1.9.0, a user supplied `X-Forwarded-Host` header can be used to perform cache poisoning of a cache fronting a Ratpack server if the cache key does not include the `X-Forwarded-Host` header as a cache key. Users are only vulnerable if they do not configure a custom `PublicAddress` instance. For versions prior to 1.9.0, by default, Ratpack utilizes an inferring version of `PublicAddress` which is vulnerable. This can be used to perform redirect cache poisoning where an attacker can force a cached redirect to redirect to their site instead of the intended redirect location. The vulnerability was patched in Ratpack 1.9.0. As a workaround, ensure that `ServerConfigBuilder::publicAddress` correctly configures the server in production.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 45.3%
CVSS Severity
CVSS v3 Score 7.0
CVSS v2 Score 4.0
References
Products affected by CVE-2021-29479
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cpe:2.3:a:ratpack_project:ratpack:0.5.2
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cpe:2.3:a:ratpack_project:ratpack:0.6.1
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cpe:2.3:a:ratpack_project:ratpack:0.9.0
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cpe:2.3:a:ratpack_project:ratpack:0.9.1
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cpe:2.3:a:ratpack_project:ratpack:0.9.10
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cpe:2.3:a:ratpack_project:ratpack:0.9.11
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cpe:2.3:a:ratpack_project:ratpack:0.9.12
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cpe:2.3:a:ratpack_project:ratpack:0.9.13
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cpe:2.3:a:ratpack_project:ratpack:0.9.14
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cpe:2.3:a:ratpack_project:ratpack:0.9.15
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cpe:2.3:a:ratpack_project:ratpack:0.9.16
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cpe:2.3:a:ratpack_project:ratpack:0.9.17
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cpe:2.3:a:ratpack_project:ratpack:0.9.18
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cpe:2.3:a:ratpack_project:ratpack:0.9.19
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cpe:2.3:a:ratpack_project:ratpack:0.9.2
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cpe:2.3:a:ratpack_project:ratpack:0.9.3
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cpe:2.3:a:ratpack_project:ratpack:0.9.4
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cpe:2.3:a:ratpack_project:ratpack:0.9.5
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cpe:2.3:a:ratpack_project:ratpack:0.9.6
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cpe:2.3:a:ratpack_project:ratpack:0.9.7
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cpe:2.3:a:ratpack_project:ratpack:0.9.8
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cpe:2.3:a:ratpack_project:ratpack:0.9.9
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cpe:2.3:a:ratpack_project:ratpack:1.0.0
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cpe:2.3:a:ratpack_project:ratpack:1.1.0
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cpe:2.3:a:ratpack_project:ratpack:1.1.1
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cpe:2.3:a:ratpack_project:ratpack:1.2.0
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cpe:2.3:a:ratpack_project:ratpack:1.3.0
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cpe:2.3:a:ratpack_project:ratpack:1.3.1
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cpe:2.3:a:ratpack_project:ratpack:1.3.2
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cpe:2.3:a:ratpack_project:ratpack:1.3.3
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cpe:2.3:a:ratpack_project:ratpack:1.4.0
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cpe:2.3:a:ratpack_project:ratpack:1.4.1
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cpe:2.3:a:ratpack_project:ratpack:1.4.2
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cpe:2.3:a:ratpack_project:ratpack:1.4.3
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cpe:2.3:a:ratpack_project:ratpack:1.4.4
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cpe:2.3:a:ratpack_project:ratpack:1.4.5
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cpe:2.3:a:ratpack_project:ratpack:1.4.6
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cpe:2.3:a:ratpack_project:ratpack:1.5.0
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cpe:2.3:a:ratpack_project:ratpack:1.5.1
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cpe:2.3:a:ratpack_project:ratpack:1.5.2
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cpe:2.3:a:ratpack_project:ratpack:1.5.3
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cpe:2.3:a:ratpack_project:ratpack:1.5.4
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cpe:2.3:a:ratpack_project:ratpack:1.6.0
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cpe:2.3:a:ratpack_project:ratpack:1.6.1
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cpe:2.3:a:ratpack_project:ratpack:1.7.0
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cpe:2.3:a:ratpack_project:ratpack:1.7.1
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cpe:2.3:a:ratpack_project:ratpack:1.7.2
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cpe:2.3:a:ratpack_project:ratpack:1.7.3
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cpe:2.3:a:ratpack_project:ratpack:1.7.4
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cpe:2.3:a:ratpack_project:ratpack:1.7.5
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cpe:2.3:a:ratpack_project:ratpack:1.7.6
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cpe:2.3:a:ratpack_project:ratpack:1.8.0
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cpe:2.3:a:ratpack_project:ratpack:1.8.1
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cpe:2.3:a:ratpack_project:ratpack:1.8.2