CVE-2020-1727: Input Validation
First published: Fri Feb 07 2020(Updated: )
A flaw was found in Keycloak, 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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/keycloak | <9.0.2 | 9.0.2 |
| Redhat Keycloak | <9.0.2 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1727
- https://issues.redhat.com/browse/KEYCLOAK-12192
- https://access.redhat.com/errata/RHSA-2020:2252
- https://access.redhat.com/security/cve/cve-2020-1727
- https://access.redhat.com/errata/RHSA-2020:2905
- https://access.redhat.com/errata/RHSA-2020:5625
- https://bugzilla.redhat.com/show_bug.cgi?id=1800573
- https://www.cve.org/CVERecord?id=CVE-2020-1727 https://nvd.nist.gov/vuln/detail/CVE-2020-1727
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the vulnerability ID of this flaw?
The vulnerability ID of this flaw is CVE-2020-1727.
Which software versions are affected by this vulnerability?
Keycloak versions before 9.0.2 are affected by this vulnerability.
What is the severity of CVE-2020-1727?
The severity of CVE-2020-1727 is medium.
How does CVE-2020-1727 exploit the vulnerability?
CVE-2020-1727 allows a malicious actor to craft deep links that introduce further attack scenarios on affected clients by exploiting improper input validation in the Authorization URLs.
How can I fix the CVE-2020-1727 vulnerability?
To fix the CVE-2020-1727 vulnerability, upgrade Keycloak to version 9.0.2 or later.
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