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phpfm

phpfm 1.7.9 contains an authentication bypass vulnerability that allows attackers to log in by exploiting loose type comparison in password hash validation. Attackers can craft specific password hashes beginning with 0e or 00e to bypass authentication and upload malicious PHP files to the server.

The vulnerability identified as CVE-2023-53894 affects Dulldusk phpfm version 1.7.9, a PHP-based file manager application. The core issue is an authentication bypass caused by loose type comparison in the password hash validation logic. Specifically, the application compares password hashes using a weak equality check that treats strings starting with '0e' or '00e' as numeric zero in scientific notation, leading to a false positive match. Attackers can exploit this by crafting malicious password hashes beginning with these prefixes, effectively bypassing authentication without knowing the actual password. Once authenticated, the attacker gains access to the file manager interface, enabling them to upload arbitrary PHP files. This can lead to remote code execution, server compromise, data theft, or further lateral movement within the network. The vulnerability requires no privileges or user interaction, making it trivially exploitable remotely over the network. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N) reflects a network attack vector with no attack complexity, no privileges, and no user interaction required, resulting in high confidentiality, integrity, and availability impacts. No known public exploits are reported yet, but the critical nature and simplicity of the bypass make it a prime target for attackers. No official patches are listed yet, indicating organizations must rely on interim mitigations. This vulnerability highlights the risks of improper hash comparison methods in authentication mechanisms.

Detailed information about CVE-2023-53894: Weak Authentication in Dulldusk phpfm affecting Dulldusk phpfm. Get real-time updates, technical details, and mitigat

CVE-2023-53894: Weak Authentication in Dulldusk phpfm - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2023-53894: Weak Authentication in Dulldusk phpfm

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