CVE Vulnerability

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.

4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 4.9 / Impact : 4.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

Scope

6.1 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://portswigger.net/web-security/web-cache-poisoning Exploit Third Party Advisory
https://github.com/ratpack/ratpack/security/advisories/GHSA-w6rq-6h34-vh7q Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:ratpack_project:ratpack:*:*:*:*:*:*:*:*
Information

Published : 2021-06-29 03:15

Updated : 2021-07-08 03:42

NVD link : CVE-2021-29479

Mitre link : CVE-2021-29479

Products Affected
No products.
CWE
NVD-CWE-Other