Multiple vulnerabilities in Red Hat Single Sign-On 7.6 on RHEL 8

1) Open redirect

EUVDB-ID: #VU84614

Risk: Low

CVSSv3.1: 3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-6291

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Exploit availability: No

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data in the verifyRedirectUri method. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: 7.6.0 - 7.6.6

rh-sso7-keycloak (Red Hat package): before 18.0.12-1.redhat_00001.1.el8sso

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.0:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.1:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.2:*:*:*:*:*:*:
• cpe:2.3:o:red_hat:rh-sso7-keycloak_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:

External links

http://access.redhat.com/errata/RHSA-2024:0799

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) Incorrect default permissions

EUVDB-ID: #VU77107

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-2976

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect default permissions in com.google.common.io.FileBackedOutputStream. A local user with access to the system can view contents of files and directories or modify them.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: 7.6.0 - 7.6.6

rh-sso7-keycloak (Red Hat package): before 18.0.12-1.redhat_00001.1.el8sso

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.0:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.1:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.2:*:*:*:*:*:*:
• cpe:2.3:o:red_hat:rh-sso7-keycloak_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:

External links

http://access.redhat.com/errata/RHSA-2024:0799

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

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.

The attacker would have to login to the system and perform certain actions 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) Resource exhaustion

EUVDB-ID: #VU75218

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-2023-26048

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources when processing multipart requests in request.getParameter(). A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: 7.6.0 - 7.6.6

rh-sso7-keycloak (Red Hat package): before 18.0.12-1.redhat_00001.1.el8sso

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.0:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.1:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.2:*:*:*:*:*:*:
• cpe:2.3:o:red_hat:rh-sso7-keycloak_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:

External links

http://access.redhat.com/errata/RHSA-2024:0799

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) Input validation error

EUVDB-ID: #VU75217

Risk: Low

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-26049

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient input validation when parsing cookies. A remote attacker can send a specially crafted HTTP request with a cookie value that starts with a double quote and force the application to read the cookie string until it sees a closing quote. Such behavior can be used to exfiltrate sensitive values from other cookies.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: 7.6.0 - 7.6.6

rh-sso7-keycloak (Red Hat package): before 18.0.12-1.redhat_00001.1.el8sso

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.0:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.1:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.2:*:*:*:*:*:*:
• cpe:2.3:o:red_hat:rh-sso7-keycloak_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:

External links

http://access.redhat.com/errata/RHSA-2024:0799

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.

5) Cross-site scripting

EUVDB-ID: #VU84532

Risk: Low

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-2023-6134

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 within wildcard in OIDC redirect_uri. 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

Red Hat Single Sign-On: 7.6.0 - 7.6.6

rh-sso7-keycloak (Red Hat package): before 18.0.12-1.redhat_00001.1.el8sso

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.0:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.1:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.2:*:*:*:*:*:*:
• cpe:2.3:o:red_hat:rh-sso7-keycloak_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:

External links

http://access.redhat.com/errata/RHSA-2024:0799

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) Open redirect

EUVDB-ID: #VU85171

Risk: Low

CVSSv3.1: 3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-6927

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Exploit availability: No

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data. A remote attacker can steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt".

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: 7.6.0 - 7.6.6

rh-sso7-keycloak (Red Hat package): before 18.0.12-1.redhat_00001.1.el8sso

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.0:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.1:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.2:*:*:*:*:*:*:
• cpe:2.3:o:red_hat:rh-sso7-keycloak_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:

External links

http://access.redhat.com/errata/RHSA-2024:0799

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.

7) Inclusion of Sensitive Information in Log Files

EUVDB-ID: #VU83241

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-2023-44483

CWE-ID: CWE-532 - Information Exposure Through Log Files

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to software stores sensitive information into log files when using the JSR 105 API. A remote user can obtain a private key when generating an XML Signature with debug level enabled.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: 7.6.0 - 7.6.6

rh-sso7-keycloak (Red Hat package): before 18.0.12-1.redhat_00001.1.el8sso

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.0:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.1:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.2:*:*:*:*:*:*:
• cpe:2.3:o:red_hat:rh-sso7-keycloak_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:

External links

http://access.redhat.com/errata/RHSA-2024:0799

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.

8) Improper Output Neutralization for Logs

EUVDB-ID: #VU86549

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-6484

CWE-ID: CWE-117 - Improper Output Neutralization for Logs

Exploit availability: No

Description

The vulnerability allows a remote attacker to manipulate data in log files.

The vulnerability exists due to improper input validation during WebAuthn authentication or registration. A remote attacker can manipulate data in log files when using the WebAuthn authentication mode.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: 7.6.0 - 7.6.6

rh-sso7-keycloak (Red Hat package): before 18.0.12-1.redhat_00001.1.el8sso

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.0:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.1:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_single_sign-on:7.6.2:*:*:*:*:*:*:
• cpe:2.3:o:red_hat:rh-sso7-keycloak_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:

External links

http://access.redhat.com/errata/RHSA-2024:0799

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.