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AUSCERT External Security Bulletin Redistribution
ESB-2020.2626
Security Bulletin: WebSphere Application Server is vulnerable to a remote
code execution vulnerability (CVE-2020-4534)
31 July 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: WebSphere Application Server
Publisher: IBM
Operating System: Linux variants
Windows
AIX
HP-UX
Solaris
IBM i
z/OS
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-4534
Original Bulletin:
https://www.ibm.com/support/pages/node/6255074
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Security Bulletin: WebSphere Application Server is vulnerable to a remote code
execution vulnerability (CVE-2020-4534)
Document Information
Product : WebSphere Application Server
Software version : 7.0, 8.0, 8.5, 9.0
Operating system(s): AIX
HP-UX
IBM i
Linux
Solaris
Windows
z/OS
Edition : Advanced,Base,Developer,Enterprise,Express,Network Deployment,Single Server
Summary
WebSphere Application Server traditional is vulnerable to a remote code
execution vulnerability. This has been addressed.
Vulnerability Details
CVEID: CVE-2020-4534
DESCRIPTION: IBM WebSphere Application Server could allow a local
authenticated attacker to gain elevated privileges on the system, caused by
improper handling of UNC paths. By scheduling a task with a specially-crafted
UNC path, an attacker could exploit this vulnerability to execute arbitrary
code with higher privileges.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities
/182808 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H)
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 9.0.5.4:
Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix PH26083
- --OR--
Apply Fix Pack 9.0.5.5 or later (targeted availability 3Q2020).
For V8.5.0.0 through 8.5.5.17:
Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix PH26083
- --OR--
Apply Fix Pack 8.5.5.18 or later (targeted availability 3Q2020).
For V8.0.0.0 through 8.0.0.15:
Upgrade to 8.0.0.15 and then apply Interim Fix PH26083
For V7.0.0.0 through 7.0.0.45:
Upgrade to 7.0.0.45 and then apply Interim Fix PH26083
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
Change History
30 July 2020: Initial Publication
- --------------------------END INCLUDED TEXT--------------------
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