Security Bulletin
Summary
WebSphere Application Server is vulnerable to an XML External Entity (XXE) Injection vulnerability. This has been addressed.
Vulnerability Details
CVEID: CVE-2020-4949
DESCRIPTION: IBM WebSphere Application Server is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources.
CVSS Base score: 8.2
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/192025 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| WebSphere Application Server | 9.0 |
| WebSphere Application Server | 8.5 |
| WebSphere Application Server | 8.0 |
| WebSphere Application Server | 7.0 |
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 PH31727
--OR--
· Apply Fix Pack 9.0.5.7 or later (targeted availability 1Q2021).
For V8.5.0.0 through 8.5.5.18:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH31727
· Apply Fix Pack 8.5.5.19 or later (targeted availability 1Q2021).
For V8.0.0.0 through 8.0.0.15:
· Upgrade to 8.0.0.15 and then apply Interim Fix PH31727
For V7.0.0.0 through 7.0.0.45:
· Upgrade to 7.0.0.45 and then apply Interim Fix PH31727
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
Get Notified about Future Security Bulletins
References
Acknowledgement
The vulnerability was reported to IBM by r00t4dm at Cloud-Penetrating Arrow Lab, Longofo at Knownsec 404 Team and 0rich1 of Ant Security FG Lab
Change History
25 Jan 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
Was this topic helpful?
Document Information
Modified date:
25 January 2021
UID
ibm16408244