Security Bulletin: IBM Db2 Web Query for i is vulnerable to denial of service in Apache Commons Compress (CVE-2021-36090), arbitrary code execution in Apache Log4j (CVE-2021-44832), and cross-site scripting in TIBCO WebFOCUS (CVE-2021-35493)

Security Bulletin

Summary

There are vulnerabilities in Apache Commons Compress (CVE-2021-36090), Apache Log4j (CVE-2021-44832), and TIBCO WebFOCUS (CVE-2021-35493) as described in the vulnerability details section. Apache Commons Compress is used by Db2 Web Query for zipping and unzipping objects, such as import and export packages via Change Management or log files via the Administration Console. Apache Log4j is used by Db2 Web Query for i for generating logs and diagnostic traces in some of its components. TIBCO WebFOCUS is used as the underlying base product for Db2 Web Query for i. IBM has addressed the vulnerabilities in Db2 Web Query for i by upgrading to Apache Commons Compress 1.21 and Apache Log4j 2.17.1, and by upgrading to remediated components of TIBCO WebFOCUS 8206 and 8207.

Vulnerability Details

CVEID: CVE-2021-36090
DESCRIPTION: Apache Commons Compress is vulnerable to a denial of service, caused by an out-of-memory error when large amounts of memory are allocated. By reading a specially-crafted ZIP archive, a remote attacker could exploit this vulnerability to cause a denial of service condition against services that use Compress' zip package.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/205310 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID: CVE-2021-44832
DESCRIPTION: Apache Log4j could allow a remote attacker with permission to modify the logging configuration file to execute arbitrary code on the system. By constructing a malicious configuration using a JDBC Appender with a data source referencing a JNDI URI , an attacker could exploit this vulnerability to execute remote code.
CVSS Base score: 6.6
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/216189 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2021-35493
DESCRIPTION: TIBCO Webfocus WebFOCUS Reporting Server and WebFOCUS Client components are vulnerable to cross-site scripting, caused by improper validation of user-supplied input. A remote attacker could exploit this vulnerability using a specially-crafted URL to execute script in a victim's Web browser within the security context of the hosting Web site, once the URL is clicked. An attacker could use this vulnerability to steal the victim's cookie-based authentication credentials.
CVSS Base score: 9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/209363 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s)	Version(s)	CVE
IBM Db2 Web Query for i	2.3.0	CVE-2021-36090 CVE-2021-44832 CVE-2021-35493
IBM Db2 Web Query for i	2.2.1	CVE-2021-36090 CVE-2021-44832 CVE-2021-35493
IBM Db2 Web Query for i	2.2.0	CVE-2021-36090 CVE-2021-35493

Remediation/Fixes

IBM strongly recommends addressing the vulnerabilities now.

Db2 Web Query for i releases 2.2.0, 2.2.1, and 2.3.0 are impacted.

Release 2.2.0 can be fixed by upgrading to release 2.2.1 or 2.3.0, depending on your IBM i release level:

Operating system	Remediation
IBM i 7.4	Upgrade to Db2 Web Query for i 2.3.0
IBM i 7.3	Upgrade to Db2 Web Query for i 2.3.0
IBM i 7.2	Upgrade to Db2 Web Query for i 2.2.1
IBM i 7.1	Upgrade to Db2 Web Query for i 2.2.1

To request an EZ-Install package, including instructions for the upgrade installation, send an email to QU2@us.ibm.com. More information for the upgrade is available at https://ibm.biz/db2wq-install.

Releases 2.2.1 and 2.3.0 can be fixed by applying the latest Db2 Web Query for i group Program Temporary Fix (PTF).

The PTFs are applied to product ID 5733WQX. The group PTF numbers and minimum level with the fix are:

Affected Releases	Group PTF and Minimum Level for Remediation
Db2 Web Query for i 2.3.0 w/ IBM i 7.4	SF99654 level 5
Db2 Web Query for i 2.3.0 w/ IBM i 7.3	SF99533 level 5
Db2 Web Query for i 2.2.1 w/ IBM i 7.4	SF99653 level 13
Db2 Web Query for i 2.2.1 w/ IBM i 7.3	SF99433 level 13
Db2 Web Query for i 2.2.1 w/ IBM i 7.2	SF99434 level 13
Db2 Web Query for i 2.2.1 w/ IBM i 7.1	SF99435 level 13

Important note:

IBM recommends that all users running unsupported versions of affected products upgrade to supported and fixed version of affected products.

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

23 Mar 2022: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location

Worldwide

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Tips

Security Bulletin: IBM Db2 Web Query for i is vulnerable to denial of service in Apache Commons Compress (CVE-2021-36090), arbitrary code execution in Apache Log4j (CVE-2021-44832), and cross-site scripting in TIBCO WebFOCUS (CVE-2021-35493)