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AUSCERT External Security Bulletin Redistribution
ESB-2018.2569
Joomla! Security News
30 August 2018
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AusCERT Security Bulletin Summary
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Product: Joomla!
Publisher: Joomla!
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Cross-site Scripting -- Remote with User Interaction
Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2018-15882 CVE-2018-15881 CVE-2018-15880
Original Bulletin:
https://developer.joomla.org/security-centre/743-20180801-core-hardening-the-inputfilter-for-phar-stubs.html
https://developer.joomla.org/security-centre/744-20180802-core-stored-xss-vulnerability-in-the-frontend-profile.html
https://developer.joomla.org/security-centre/745-20180803-core-acl-violation-in-custom-fields.html
Comment: This bulletin contains three (3) Joomla! security advisories.
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[20180801] - Core - Hardening the InputFilter for PHAR stubs
o Project: Joomla!
o SubProject: CMS
o Impact: High
o Severity: Low
o Versions: 1.5.0 through 3.8.11
o Exploit type: Malicious file upload
o Reported Date: 2018-August-23
o Fixed Date: 2018-August-28
o CVE Number: CVE-2018-15882
Description
Inadequate checks in the InputFilter class could allow specifically
prepared PHAR files to pass the upload filter.
Affected Installs
Joomla! CMS versions 1.5.0 through 3.8.11
Solution
Upgrade to version 3.8.12
Contact
The JSST at the Joomla! Security Centre.
Reported By: Davide Tampellini
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[20180802] - Core - Stored XSS vulnerability in the frontend profile
o Project: Joomla!
o SubProject: CMS
o Impact: Low
o Severity: Low
o Versions: 1.5.0 through 3.8.11
o Exploit type: XSS
o Reported Date: 2018-July-10
o Fixed Date: 2018-August-28
o CVE Number: CVE-2018-15880
Description
Inadequate output filtering on the user profile page could lead to a stored XSS
attack.
Affected Installs
Joomla! CMS versions 1.5.0 through 3.8.11
Solution
Upgrade to version 3.8.12
Contact
The JSST at the Joomla! Security Centre.
Reported By: Roland Dalmulder, Perfect Web Team
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[20180803] - Core - ACL Violation in custom fields
o Project: Joomla!
o SubProject: CMS
o Impact: Low
o Severity: Low
o Versions: 3.7.0 through 3.8.11
o Exploit type: ACL Violation
o Reported Date: 2018-July-10
o Fixed Date: 2018-August-28
o CVE Number: CVE-2018-15881
Description
Inadequate checks regarding disabled fields can lead to an ACL violation.
Affected Installs
Joomla! CMS versions 3.7.0 through 3.8.11
Solution
Upgrade to version 3.8.12
Contact
The JSST at the Joomla! Security Centre.
Reported By: Elisa Foltyn, COOLCAT CREATIONS
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