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Security Bulletin: WebSphere Application Server is vulnerable to a directory traversal vulnerability (CVE-2021-20354)

Security Bulletin


Summary

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

Vulnerability Details

CVEID:   CVE-2021-20354
DESCRIPTION:   IBM WebSphere Application Server could allow a remote attacker to traverse directories. An attacker could send a specially-crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/194883 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

Affected Product(s)Version(s)
WebSphere Application Server9.0
WebSphere Application Server8.5
WebSphere Application Server8.0

Remediation/Fixes

For WebSphere Application Server traditional and WebSphere Application Server Hypervisor Edition:

For V9.0.0.0 through 9.0.5.6: 
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH33648
--OR--
· Apply Fix Pack 9.0.5.7 or later (targeted availability 1Q2021). 

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 PH33648
--OR--
· Apply Fix Pack 8.5.5.20 or later (targeted availability 3Q2021). 


For V8.0.0.0 through 8.0.0.15:
· Upgrade to 8.0.0.15 and then apply Interim Fix PH33648
  

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

WebSphere Application Server V7.0 and V8.0 are no longer in full support; IBM recommends upgrading to a fixed, supported version/release/platform of the product.

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

Off

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

The vulnerability was reported to IBM by Kylinking

Change History

17 Feb 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":"8.0, 8.5, 9.0","Edition":"Advanced,Base,Developer,Enterprise,Express,Network Deployment,Single Server","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
18 February 2021

UID

ibm16415959

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