Smart Slider 3 Pro version 3.5.1.35 for WordPress and Joomla contains a multi-stage remote access toolkit injected through a compromised update system that allows unauthenticated attackers to execute arbitrary code and commands. Attackers can trigger pre-authentication remote shell execution via HTTP headers, establish authenticated backdoors accepting arbitrary PHP code or OS commands, create hidden administrator accounts, exfiltrate credentials and access keys, and maintain persistence through multiple injection points including must-use plugins and core file modifications.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 5
https://mysites.guru/blog/smart-slider-3-pro-supply-chain-compromise/
disclosure@vulncheck.com
https://patchstack.com/articles/critical-supply-chain-compromise-in-smart-slide…
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https://patchstack.com/database/wordpress/plugin/nextend-smart-slider3-pro/vuln…
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https://smartslider.helpscoutdocs.com/article/2143-joomla-security-advisory-sma…
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https://smartslider.helpscoutdocs.com/article/2144-wordpress-security-advisory-…
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