Multiple vulnerabilities in Red Hat Single Sign-On 7.3

1) Deserialization of Untrusted Data

EUVDB-ID: #VU19938

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-11307

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to the usage of default typing along with a gadget class from iBatis, which allows exfiltration of content. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: before 7.3.1

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:*:*:*:*:*:*:*:*

External links

https://access.redhat.com/errata/RHSA-2019:1140

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) Deserialization of Untrusted Data

EUVDB-ID: #VU19942

Risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-12022

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists when Default Typing is enabled and the service has the Jodd-db jar in the classpath. A remote attacker can provide an LDAP service to access and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: before 7.3.1

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:*:*:*:*:*:*:*:*

External links

https://access.redhat.com/errata/RHSA-2019:1140

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) Deserialization of Untrusted Data

EUVDB-ID: #VU19943

Risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-12023

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists when Default Typing is enabled and the service has the Oracle JDBC jar in the classpath. A remote attacker can provide an LDAP service to access and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: before 7.3.1

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:*:*:*:*:*:*:*:*

External links

https://access.redhat.com/errata/RHSA-2019:1140

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) Information disclosure

EUVDB-ID: #VU20068

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-14642

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

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

The vulnerability exists due to incorrect processing of HTTP response headers during buffer flushing. A remote attacker can view contents of HTTP responses from previous requests.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: before 7.3.1

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:*:*:*:*:*:*:*:*

External links

https://access.redhat.com/errata/RHSA-2019:1140

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) XXE attack

EUVDB-ID: #VU17777

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-14720

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform XXE attacks.

The vulnerability exists due to fail to block unspecified Java Development Kit (JDK) classes from polymorphic deserialization. A remote attacker can send a specially crafted request that submits malicious input, conduct an XXE attack to access sensitive information, bypass security restrictions, or cause a denial of service (DoS) condition on the targeted system. 

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: before 7.3.1

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:*:*:*:*:*:*:*:*

External links

https://access.redhat.com/errata/RHSA-2019:1140

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) Improper input validation

EUVDB-ID: #VU28622

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-14721

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

The vulnerability exists due to improper input validation within the NoSQL (jackson-databind) component in Oracle NoSQL Database. A remote non-authenticated attacker can exploit this vulnerability to execute arbitrary code.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: before 7.3.1

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:*:*:*:*:*:*:*:*

External links

https://access.redhat.com/errata/RHSA-2019:1140

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) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU17776

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-14721

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to fail to block the axis2-jaxws class from polymorphic deserialization. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: before 7.3.1

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:*:*:*:*:*:*:*:*

External links

https://access.redhat.com/errata/RHSA-2019:1140

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) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU20035

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-3805

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

Exploit availability: No

Description

The vulnerability allows a local user to perform denial of service attack.

The vulnerability exists due to  insecure permissions for /var/run/jboss-eap/ file that allows any user with permissions to run init.d scripts to terminate arbitrary process by modifying its PID in /var/run/jboss-eap/.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: before 7.3.1

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:*:*:*:*:*:*:*:*

External links

https://access.redhat.com/errata/RHSA-2019:1140

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.

9) Insufficiently protected credentials

EUVDB-ID: #VU21706

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-3868

CWE-ID: CWE-522 - Insufficiently Protected Credentials

Exploit availability: No

Description

The vulnerability allows a remote attacker to hijack user's session.

The vulnerability exists due to software may use the end user token (access or id token JWT) as a session cookie for browser sessions for OIDC. A remote attacker that has access to the service provider backend can hijack the user's browser session and gain unauthorized access to the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: before 7.3.1

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:*:*:*:*:*:*:*:*

External links

https://access.redhat.com/errata/RHSA-2019:1140

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.

10) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU35944

Risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-3894

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

Exploit availability: No

Description

The vulnerability allows a remote authenticated user to execute arbitrary code.

It was discovered that the ElytronManagedThread in Wildfly's Elytron subsystem in versions from 11 to 16 stores a SecurityIdentity to run the thread as. These threads do not necessarily terminate if the keep alive time has not expired. This could allow a shared thread to use the wrong security identity when executing.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Single Sign-On: before 7.3.1

CPE2.3

• cpe:2.3:a:red_hat:red_hat_single_sign-on:*:*:*:*:*:*:*:*

External links

https://access.redhat.com/errata/RHSA-2019:1140

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.