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CVE-2020-1727

Good to know:

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Date: June 22, 2020

A vulnerability was found in Keycloak before 9.0.2, where every Authorization URL that points to an IDP server lacks proper input validation as it allows a wide range of characters. This flaw allows a malicious to craft deep links that introduce further attack scenarios on affected clients.

Language: Java

Severity Score

Related Resources (3)

https://nvd.nist.gov/vuln/detail/CVE-2020-1727
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1727
https://www.mend.io/vulnerability-database/CVE-2020-1727

Severity Score

Weakness Type (CWE)

Input Validation

CWE-20

Top Fix

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Upgrade Version

Upgrade to version org.keycloak:keycloak-common:9.0.2,org.keycloak:keycloak-broker-oidc:9.0.2,org.keycloak:keycloak-model-api:9.0.2,org.keycloak:keycloak-broker-saml:9.0.2,org.keycloak:keycloak-services:9.0.2,org.keycloak:keycloak-social-facebook:9.0.2

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): SINGLE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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