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AUSCERT External Security Bulletin Redistribution
ESB-2019.1624
Joomla! Security Announcements
9 May 2019
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AusCERT Security Bulletin Summary
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Product: Joomla Core
Publisher: Joomla
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Cross-site Scripting -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2019-11809
Original Bulletin:
https://developer.joomla.org/security-centre/781-20190502-core-by-passing-protection-of-phar-stream-wrapper-interceptor.html
https://developer.joomla.org/security-centre/780-20190501-core-xss-in-com-users-acl-debug-view.html
Comment: This bulletin contains two (2) Joomla security advisories.
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Security Announcements
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[20190502] - Core - By-passing protection of Phar Stream Wrapper Interceptor
Posted: 07 May 2019 05:00 PM PDT
http://feedproxy.google.com/~r/JoomlaSecurityNews/~3/vyaXtvewK3I/781-20190502-core-by-passing-protection-of-phar-stream-wrapper-interceptor.html?utm_source=feedburner&utm_medium=email
Project: Joomla!
SubProject: CMS
Impact: Low
Severity: Low
Versions: 3.9.3 through 3.9.5
Exploit type: Object Injection
Reported Date: 2019-March-27
Fixed Date: 2019-May-07
Description
In Joomla 3.9.3, the vulnerability of insecure deserialization when
executing Phar archives was addressed by removing the known attack vector
in the Joomla core. In order to intercept file invocations like file_exists
or stat on compromised Phar archives the base name has to be determined and
checked before allowing to be handled by PHP Phar stream handling. The used
implementation however is vulnerable to path traversal leading to scenarios
where the Phar archive to be assessed is not the actual (compromised) file.
Affected Installs
Joomla! CMS versions 3.9.3 through 3.9.5
Solution
Upgrade to version 3.9.6
Contact
The JSST at the Joomla! Security Centre.
Reported By: Daniel le Gall, Fix coordinated by Oliver Hader from TYPO3
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[20190501] - Core - XSS in com_users ACL debug views
Posted: 07 May 2019 08:00 AM PDT
http://feedproxy.google.com/~r/JoomlaSecurityNews/~3/xio2qb8Db2U/780-20190501-core-xss-in-com-users-acl-debug-view.html?utm_source=feedburner&utm_medium=email
Project: Joomla!
SubProject: CMS
Impact: Moderate
Severity: Low
Versions: 1.7.0 through 3.9.5
Exploit type: XSS
Reported Date: 2019-April-29
Fixed Date: 2019-May-07
CVE Number: CVE-2019-11809
Description
The debug views of com_users do not properly escape user supplied data,
which leads to a potential XSS attack vector.
Affected Installs
Joomla! CMS versions 1.7.0 through 3.9.5
Solution
Upgrade to version 3.9.6
Contact
The JSST at the Joomla! Security Centre.
Reported By: Jose Antonio Rodriguez Garcia and Phil Keeble (MWR
InfoSecurity)
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