Multiple vulnerabilities in Keycloak



Published: 2024-04-17
Risk Medium
Patch available YES
Number of vulnerabilities 8
CVE-ID CVE-2024-1249
CVE-2024-1132
CVE-2023-6787
CVE-2023-0657
CVE-2023-6717
CVE-2024-2419
CVE-2023-6544
CVE-2023-3597
CWE-ID CWE-264
CWE-22
CWE-384
CWE-613
CWE-79
CWE-285
CWE-287
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Keycloak
Server applications / Directory software, identity management

Vendor Keycloak

Security Bulletin

This security bulletin contains information about 8 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU88799

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-1249

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to "checkLoginIframe" allows unvalidated cross-origin messages. A remote attacker can send millions of requests in seconds using simple code, significantly impacting the application's availability without proper origin validation for incoming messages.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Keycloak: 22.0.0 - 24.0.2

External links

http://github.com/keycloak/keycloak/security/advisories/GHSA-m6q9-p373-g5q8
http://access.redhat.com/errata/RHSA-2024:1867
http://access.redhat.com/errata/RHSA-2024:1868


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Path traversal

EUVDB-ID: #VU88798

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-1132

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to improper validation of URLs included in a redirect in org.keycloak.protocol.oidc. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Note, the vulnerability affects any client that utilizes a wildcard in the Valid Redirect URIs field.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Keycloak: 22.0.0 - 24.0.2

External links

http://github.com/keycloak/keycloak/security/advisories/GHSA-72vp-xfrc-42xm
http://access.redhat.com/errata/RHSA-2024:1867
http://access.redhat.com/errata/RHSA-2024:1868


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Session Fixation

EUVDB-ID: #VU88797

Risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-6787

CWE-ID: CWE-384 - Session Fixation

Exploit availability: No

Description

The vulnerability allows a remote attacker to hijack session of another user.

The vulnerability exists due to an error in the re-authentication mechanism in org.keycloak.authentication. An active keycloak session can be hijacked by initiating a new authentication (having the query parameter prompt=login) and forcing the user to enter his credentials once again. If the user cancels this re-authentication by clicking Restart login, the account takeover could take place as the new session, with a different SUB, will have the same SID as the previous session.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Keycloak: 22.0.0 - 24.0.2

External links

http://github.com/keycloak/keycloak/security/advisories/GHSA-c9h6-v78w-52wj
http://access.redhat.com/errata/RHSA-2024:1867
http://access.redhat.com/errata/RHSA-2024:1868


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Insufficient Session Expiration

EUVDB-ID: #VU88796

Risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-0657

CWE-ID: CWE-613 - Insufficient Session Expiration

Exploit availability: No

Description

The vulnerability allows a remote user to bypass implemented security restrictions.

The vulnerability exists due to software does not properly enforce token types when validating signatures locally. An authenticated user can use this flaw to exchange a logout token for an access token and possibly gain access to data outside of enforced permissions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Keycloak: 22.0.0 - 24.0.2

External links

http://github.com/keycloak/keycloak/security/advisories/GHSA-7fpj-9hr8-28vh
http://access.redhat.com/errata/RHSA-2024:1867
http://access.redhat.com/errata/RHSA-2024:1868


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Cross-site scripting

EUVDB-ID: #VU88795

Risk: Medium

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-6717

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the assertion consumer service URL in SAML POST-binding flow. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Keycloak: 22.0.0 - 24.0.2

External links

http://github.com/keycloak/keycloak/security/advisories/GHSA-8rmm-gm28-pj8q
http://access.redhat.com/errata/RHSA-2024:1867
http://access.redhat.com/errata/RHSA-2024:1868


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Path traversal

EUVDB-ID: #VU88794

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-2419

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote user to perform directory traversal attacks.

The vulnerability exists due to an error in the redirect_uri validation logic within org.keycloak.protocol.oidc.utils. A remote user can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Keycloak: 22.0.0 - 24.0.2

External links

http://access.redhat.com/security/cve/CVE-2024-2419
http://bugzilla.redhat.com/show_bug.cgi?id=2269371
http://access.redhat.com/errata/RHSA-2024:1867


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

7) Improper authorization

EUVDB-ID: #VU88793

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-6544

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to the application.

The vulnerability exists due to a permissive regular expression hard-coded for filtering allowed hosts to register a dynamic client within the org.keycloak.services.clientregistration package. A remote attacker with enough information about the environment could benefit and jeopardize an environment with this specific Dynamic Client Registration with TrustedDomain configuration previously unauthorized.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Keycloak: 22.0.0 - 24.0.2

External links

http://github.com/keycloak/keycloak/security/advisories/GHSA-46c8-635v-68r2
http://access.redhat.com/errata/RHSA-2024:1867
http://access.redhat.com/errata/RHSA-2024:1868


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Improper Authentication

EUVDB-ID: #VU88792

Risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-3597

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote user to bypass 2FA authentication process.

The vulnerability exists due to Keycloak does not correctly validate its client step-up authentication in org.keycloak.authentication. A remote user authenticated with password can use this flaw to register a false second authentication factor along with existing one and bypass authentication.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Keycloak: 22.0.0 - 24.0.2

External links

http://github.com/keycloak/keycloak/security/advisories/GHSA-4f53-xh3v-g8x4
http://access.redhat.com/errata/RHSA-2024:1867
http://access.redhat.com/errata/RHSA-2024:1868


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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