Session Hijacking Vulnerability in Keycloak by Red Hat
CVE-2023-6787

6.5MEDIUM

Key Information:

Status
Red Hat Build Of Keycloak 22
Red Hat Build Of Keycloak 22.0.10
Red Hat Single Sign-on 7
Vendor
CVE Published:
25 April 2024

What is CVE-2023-6787?

A flaw in Keycloak's re-authentication mechanism can be exploited to hijack an active session. By initiating a new authentication process with the parameter 'prompt=login', users are prompted to re-enter their credentials. If a user cancels this re-authentication by selecting 'Restart login', an account takeover can occur. This is because the new session, generating a different SUB, retains the same SID as the previous session, enabling unauthorized access to the account.

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References

https://access.redhat.com/errata/RHSA-2024:1867
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:1868
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2023-6787
vdb-entryx_refsource_REDHAT

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

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