Security Bulletin: IBM Resilient users may experience a denial of service of the SOAR Platform due to a insufficient input validation (CVE-2019-4579)

Security Bulletin

Summary

IBM Resilient users may experience a denial of service of the SOAR Platform if a form field contains a extremely large data in a POST, PUT, or PATCH http request.

Vulnerability Details

CVEID: CVE-2019-4579
DESCRIPTION: IBM Resilient OnPrem uses incomplete blocklisting for input validation which allows attackers to bypass application controls resulting in direct impact to the system and data integrity.
CVSS Base score: 4.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/167236 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)

Affected Products and Versions

Affected Product(s)	Version(s)
Resilient OnPrem	IBM Security SOAR

Remediation/Fixes

Users must upgrade to v38.0 of IBM Resilient in order to obtain a fix for this vulnerability. A limit of 1GB will be applied to incoming requests by default. This limit can be changed or deleted.

For example, to change the limit to 500MB, use the following command:

sudo resutil configset -key max_request_payload_mb -ivalue 500

Also, to remove this limit, use the following command:

sudo resutil configset -key max_request_payload_mb -delete

You can upgrade the platform by following the instructions in the "Upgrade Procedure" section in the IBM Knowledge Center.

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Acknowledgement

IBM X-Force Ethical Hacking Team: Brad Sherrill, Rodney Ryan, John Zuccato, Jonathan Fitz-gerald, Chris Shepherd, Troy Fisher, Vincent Dragnea, Nathan Roane, Elaheh Samani, and Kamil Sarbinowski

Change History

23 Aug 2020: 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 Resilient users may experience a denial of service of the SOAR Platform due to a insufficient input validation (CVE-2019-4579)