Security Bulletin: Multiple Security Vulnerabilities Affect IBM WebSphere Application Server in IBM Cloud

Summary

There are multiple security vulnerabilities that affect the IBM WebSphere Application Server in the IBM Cloud. WebSphere Application Server Admin Console is vulnerable to cross-site scripting. WebSphere Application Server Liberty is vulnerable to a denial of service. WebSphere Application Server is vulnerable to an information exposure vulnerability. WebSphere Application Server is vulnerable to an information disclosure vulnerability. WebSphere Application Server is vulnerable to an information disclosure vulnerability. There is a vulnerability in the Hibernate Validator library used by WebSphere Application Server Liberty. Multiple Vulnerabilities in IBM® Java SDK affect WebSphere Application Server October 2020 CPU.

Vulnerability Details

CVEID:CVE-2020-4643
**DESCRIPTION:**IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information. IBM X-Force ID: 185590.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/185590 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVEID:CVE-2020-4578
**DESCRIPTION:**IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 184433.
CVSS Base score: 5.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/184433 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N)

CVEID:CVE-2020-10693
**DESCRIPTION:**Hibernate Hibernate Validator could allow a remote attacker to bypass security restrictions, caused by a flaw in the message interpolation processor. By sending a specially-crafted request, an attacker could exploit this vulnerability to bypass input sanitation controls when handling user-controlled data in error messages.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/182240 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

CVEID:CVE-2020-4782
**DESCRIPTION:**IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 could allow a remote attacker to traverse directories on the system. An attacker could send a specially-crafted URL request containing “dot dot” sequences (/…/) to view arbitrary files on the system.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/189213 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)

CVEID:CVE-2020-14782
**DESCRIPTION:**An unspecified vulnerability in Java SE related to the Libraries component could allow an unauthenticated attacker to cause no confidentiality impact, low integrity impact, and no availability impact.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/190100 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)

CVEID:CVE-2020-14797
**DESCRIPTION:**An unspecified vulnerability in Java SE related to the Libraries component could allow an unauthenticated attacker to cause no confidentiality impact, low integrity impact, and no availability impact.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/190115 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)

CVEID:CVE-2020-4629
**DESCRIPTION:**IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 could allow a local user with specialized access to obtain sensitive information from a detailed technical error message. This information could be used in further attacks against the system. IBM X-Force ID: 185370.
CVSS Base score: 2.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/185370 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID:CVE-2020-4576
**DESCRIPTION:**IBM WebSphere Application Server 7.5, 8.0, 8.5, and 9.0 traditional could allow a remote attacker to obtain sensitive information with a specially-crafted sequence of serialized objects. IBM X-Force ID: 184428.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/184428 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID:CVE-2020-4590
**DESCRIPTION:**IBM WebSphere Application Server Liberty 17.0.0.3 through 20.0.0.9 running oauth-2.0 or openidConnectServer-1.0 server features is vulnerable to a denial of service attack conducted by an authenticated client. IBM X-Force ID: 184650.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/184650 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

These vulnerabilities affect the following versions and releases of IBM WebSphere Application Server in IBM Cloud:

• Version 9.0
• Version 8.5
• Liberty

Remediation/Fixes

To patch an existing service instance, refer to the IBM WebSphere Application Server bulletins listed below:

• WebSphere Application Server Admin Console is vulnerable to cross-site scripting (CVE-2020-4578)
• Denial of service vulnerability in WebSphere Application Server Liberty (CVE-2020-4590)
• WebSphere Application Server is vulnerable to an information exposure vulnerability (CVE-2020-4643)
• WebSphere Application Server is vulnerable to an information disclosure vulnerability (CVE-2020-4576)
• WebSphere Application Server is vulnerable to an information disclosure vulnerability (CVE-2020-4629)
• Vulnerability in Hibernate Validator affects WebSphere Application Server Liberty (CVE-2020-10693)
• Multiple Vulnerabilities in IBM® Java SDK affect WebSphere Application Server October 2020 CPU

Please see Updating your environment in the KnowlegeCenter for information on applying service.

Alternatively, delete the vulnerable service instance and create a new instance.

Workarounds and Mitigations

None