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AUSCERT External Security Bulletin Redistribution
ESB-2018.3090
Joomla! Security News
11 October 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 -- Existing Account
Cross-site Request Forgery -- Remote with User Interaction
Unauthorised Access -- Existing Account
Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-17859 CVE-2018-17858 CVE-2018-17857
CVE-2018-17856 CVE-2018-17855
Original Bulletin:
https://developer.joomla.org/security-centre/755-20181005-core-csrf-hardening-in-com-installer.html
https://developer.joomla.org/security-centre/754-20181004-core-acl-violation-in-com-users-for-the-admin-verification.html
https://developer.joomla.org/security-centre/753-20181003-core-access-level-violation-in-com-tags.html
https://developer.joomla.org/security-centre/752-20181002-core-inadequate-default-access-level-for-com-joomlaupdate.html
https://developer.joomla.org/security-centre/751-20181001-core-hardening-com-contact-contact-form.html
Comment: This bulletin contains five (5) Joomla! security advisories.
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[20181005] - Core - CSRF hardening in com_installer
o Project: Joomla!
o SubProject: CMS
o Impact: Moderate
o Severity: Low
o Versions: 2.5.0 through 3.8.12
o Exploit type: CSRF
o Reported Date: 2018-September-26
o Fixed Date: 2018-October-02
o CVE Number: CVE-2018-17858
Description
Added additional CSRF hardening in com_installer actions in the backend.
Affected Installs
Joomla! CMS versions 2.5.0 through 3.8.12
Solution
Upgrade to version 3.8.13
Contact
The JSST at the Joomla! Security Centre.
Reported By: Raviraj A. Powar
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[20181004] - Core - ACL Violation in com_users for the admin verification
o Project: Joomla!
o SubProject: CMS
o Impact: Moderate
o Severity: Low
o Versions: 1.5.0 through 3.8.12
o Exploit type: ACL Violation
o Reported Date: 2017-December-27
o Fixed Date: 2018-October-02
o CVE Number: CVE-2018-17855
Description
In case that an attacker gets access to the mail account of an user who can
approve admin verifications in the registration process he can activate
himself.
Affected Installs
Joomla! CMS versions 1.5.0 through 3.8.12
Solution
Upgrade to version 3.8.13
Contact
The JSST at the Joomla! Security Centre.
Reported By: Paul Freeman
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[20181003] - Core - Access level Violation in com_tags
o Project: Joomla!
o SubProject: CMS
o Impact: Moderate
o Severity: Low
o Versions: 3.1.0 through 3.8.12
o Exploit type: ACL Violation
o Reported Date: 2018-June-20
o Fixed Date: 2018-October-02
o CVE Number: CVE-2018-17857
Description
Inadequate checks on the tags search fields can lead to an access level
violation.
Affected Installs
Joomla! CMS versions 3.1.0 through 3.8.12
Solution
Upgrade to version 3.8.13
Contact
The JSST at the Joomla! Security Centre.
Reported By: Andrey Kapitanov
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[20181002] - Core - Inadequate default access level for com_joomlaupdate
o Project: Joomla!
o SubProject: CMS
o Impact: High
o Severity: Low
o Versions: 2.5.4 through 3.8.12
o Exploit type: Object Injection
o Reported Date: 2018-June-21
o Fixed Date: 2018-October-02
o CVE Number: CVE-2018-17856
Description
Joomla's com_joomlaupdate allows the execution of arbitrary code. The default
ACL config enabled access of Administrator-level users to access
com_joomlaupdate and trigger a code execution.
Affected Installs
Joomla! CMS versions 2.5.4 through 3.8.12
Solution
Upgrade to version 3.8.13
Contact
The JSST at the Joomla! Security Centre.
Reported By: Codesafescan
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[20181001] - Core - Hardening com_contact contact form
o Project: Joomla!
o SubProject: CMS
o Impact: Moderate
o Severity: Low
o Versions: 2.5.0 through 3.8.12
o Exploit type: Incorrect Access Control
o Reported Date: 2018-September-17
o Fixed Date: 2018-October-02
o CVE Number: CVE-2018-17859
Description
Inadequate checks in com_contact could allowed mail submission in disabled
forms.
Affected Installs
Joomla! CMS versions 2.5.0 through 3.8.12
Solution
Upgrade to version 3.8.13
Contact
The JSST at the Joomla! Security Centre.
Reported By: David Jardin (JSST)
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