Home Security Joomla! LDAP injection bug patched

A longstanding bug in the Joomla! content management system, which allowed the takeover of a site by exploiting a vulnerability in the login page, has been patched by the project.

Versions 1.5 through to 3.7.5 are affected but only if the systems are configured to use LDAP for authentication.

The Joomla! Security Centre issued version 3.8.0 of the popular CMS on Wednesday to fix the issue.

The bug was found by Dr Johannes Dahse who runs RIPS Technologies, a German firm that finds bugs in PHP code.

Dr Dahse discovered the vulnerability using his RIPS solution code analysis tool and informed the Joomla! team on 27 July. Two days later, the project confirmed that he was correct.

A patch was issued on 19 September and Dr Dahse released the details of the vulnerability on Wednesday.

He said the vulnerability was not a configuration flaw and an attacker did not need any elevated privileges to exploit it.

"By exploiting a vulnerability in the login page, an unprivileged remote attacker can efficiently extract all authentication credentials of the LDAP server that is used by the Joomla! installation," Dr Dahse said.

"These include the username and password of the super user, the Joomla! administrator.

"An attacker can then use the hijacked information to log in to the administrator control panel and to take over the Joomla! installation, as well as potentially the Web server, by uploading custom Joomla! extensions for remote code execution."


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Sam Varghese

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Sam Varghese has been writing for iTWire since 2006, a year after the sitecame into existence. For nearly a decade thereafter, he wrote mostly about free and open source software, based on his own use of this genre of software. Since May 2016, he has been writing across many areas of technology. He has been a journalist for nearly 40 years in India (Indian Express and Deccan Herald), the UAE (Khaleej Times) and Australia (Daily Commercial News (now defunct) and The Age). His personal blog is titled Irregular Expression.


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