Security Bulletin: Integrated application server and integrated web services for IBM i are affected by CVE-2021-35517 and CVE-2021-36090

Security Bulletin

Summary

There are multiple vulnerabilities in the Apache Commons Compress library as described in the vulnerability details section. The Apache Commons Compress library is used by WebSphere Application Server Liberty on IBM i. WebSphere Application Server Liberty is the runtime that is used by integrated application server and integrated web services server. IBM i has addressed the vulnerability in the WebSphere Application Server Liberty implementation.

Vulnerability Details

CVEID: CVE-2021-35517
DESCRIPTION: Apache Commons Compress is vulnerable to a denial of service, caused by an out of memory error when allocating large amounts of memory. By persuading a victim to open a specially-crafted TAR archive, a remote attacker could exploit this vulnerability to cause a denial of service condition against services that use Compress' tar package.
CVSS Base score: 5.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/205307 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)

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)

Affected Products and Versions

Affected Product(s)	Version(s)
IBM i	7.4
IBM i	7.3
IBM i	7.2

Remediation/Fixes

The issues can be fixed by applying a PTF to IBM i.
Releases 7.4, 7.3, and 7.2 of IBM i are supported and will be fixed.
The IBM i PTF numbers containing the fix for the CVEs are:

Release 7.4 – SI77224
Release 7.3 – SI77225
Release 7.2 – SI77226

https://www.ibm.com/support/fixcentral/

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

24 Sep 2021: 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: Integrated application server and integrated web services for IBM i are affected by CVE-2021-35517 and CVE-2021-36090