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AUSCERT External Security Bulletin Redistribution
ESB-2019.3557
IBM WebSphere Application Server security update
20 September 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: WebSphere Application Server
Publisher: IBM
Operating System: AIX
HP-UX
Linux variants
Solaris
z/OS
Windows
Impact/Access: Denial of Service -- Remote/Unauthenticated
Provide Misleading Information -- Remote with User Interaction
Access Confidential Data -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2019-10098 CVE-2019-10092 CVE-2018-20843
Reference: ESB-2019.3525
ESB-2019.3133
ESB-2019.2316
Original Bulletin:
https://www.ibm.com/support/pages/security-bulletin-multiple-vulnerabilities-ibm-http-server-used-websphere-application-server
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Security Bulletin: Multiple vulnerabilities in IBM HTTP Server used by
WebSphere Application Server
Document Information
Modified date: 18 September 2019
UID: ibm10964768
Summary
There are multiple vulnerabilities in the IBM HTTP Server used by WebSphere
Application Server.
Vulnerability Details
CVEID: CVE-2018-20843
DESCRIPTION: libexpat is vulnerable to a denial of service, caused by an error
in the XML parser. By persuading a victim to open a specially-crafted file, a
remote attacker could exploit this vulnerability to consume all available CPU
resources.
CVSS Base Score: 3.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
163073 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L)
CVEID: CVE-2019-10092
DESCRIPTION: Apache HTTP Server is vulnerable to cross-site scripting, caused
by improper validation of user-supplied input by the mod_proxy error page. A
remote attacker could cause the link on the error page to be malfomed and
instead point to a page of their choice. An attacker could use this
vulnerability to steal the victim''s cookie-based authentication credentials.
CVSS Base Score: 4.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
165367 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N)
CVEID: CVE-2019-10098
DESCRIPTION: Apache HTTP Server could allow a remote attacker to conduct
phishing attacks, caused by an open redirect vulnerability in the mod_rewrite
module. An attacker could exploit this vulnerability using a specially-crafted
URL to redirect a victim to arbitrary Web sites.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
165366 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)
Affected Products and Versions
This vulnerability affects the following version and release of IBM HTTP Server
(powered by Apache) component in all editions of WebSphere Application Server
and bundling products.
* Version 9.0
* Version 8.5
* Version 8.0
* Version 7.0
Remediation/Fixes
For V9.0.0.0 through 9.0.5.0:
- - Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix PH14974
- --OR--
- - Apply Fix Pack 9.0.5.1 or later (targeted availability 3Q 2019).
For V8.5.5.0 through 8.5.5.16:
- - Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix PH14974
- --OR--
- - Apply Fix Pack 8.5.5.17 or later (targeted availability 1Q 2020).
For V8.0.0.0 through 8.0.0.15:
- - Upgrade to 8.0.0.15 and then apply Interim Fix PH14974
For V7.0.0.0 through 7.0.0.45:
- - Upgrade to 7.0.0.45 then apply Interim Fix PH14974
Change History
18 September 2019: original document published
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