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Security Bulletin: WebSphere Application Server ND is vulnerable to Directory Traversal vulnerability (CVE-2021-20517)

Security Bulletin


Summary

WebSphere Application Server ND is vulnerable to a directory traversal vulnerability. This has been addressed.

Vulnerability Details

CVEID:   CVE-2021-20517
DESCRIPTION:   IBM WebSphere Application Server Network Deployment could allow a remote authenticated attacker to traverse directories. An attacker could send a specially-crafted URL request containing "dot dot" sequences (/../) to read and delete arbitrary files on the system.
CVSS Base score: 6.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/198435 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L)

Affected Products and Versions

Affected Product(s) Version(s)
WebSphere Application Server ND 9.0
WebSphere Application Server ND 8.5

Remediation/Fixes

The recommended solution is to apply the interim fix, Fix Pack or PTF containing the APAR for each named product as soon as practical. For WebSphere Application Server ND traditional and WebSphere Application Server ND Hypervisor Edition:

For V9.0.0.0 through 9.0.5.7:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH35098
--OR--
· Apply Fix Pack 9.0.5.8 or later (targeted availability 2Q2021). 

For V8.5.0.0 through 8.5.5.19:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH35098
--OR--
· Apply Fix Pack 8.5.5.20 or later (targeted availability 3Q2021).

Additional interim fixes may be available and linked off the interim fix download page.

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

This vulnerability was reported to IBM by Alessio Dalla Piazza.

Change History

27 May 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

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Component":"","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF012","label":"IBM i"},{"code":"PF016","label":"Linux"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"},{"code":"PF035","label":"z\/OS"}],"Version":"8.5, 9.0","Edition":"Advanced, Enterprise,Network Deployment","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
27 May 2021

UID

ibm16456955

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