CVE-2025-5525 in trojan
Summary
by MITRE • 06/03/2025
A vulnerability was found in Jrohy trojan up to 2.15.3. It has been declared as critical. This vulnerability affects the function LogChan of the file trojan/util/linux.go. The manipulation of the argument c leads to os command injection. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.
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Analysis
by VulDB Data Team • 06/06/2025
The CVE-2025-5525 vulnerability represents a critical security flaw in the Jrohy trojan software version 2.15.3 and earlier, presenting a significant risk to affected systems. This vulnerability specifically targets the LogChan function within the trojan/util/linux.go file, where improper input validation creates an avenue for malicious exploitation. The vulnerability has been classified as critical due to its potential for remote code execution and the public availability of exploitation methods, making it a pressing concern for system administrators and security professionals who must assess their exposure to this threat.
The technical implementation of this vulnerability stems from a command injection flaw in the LogChan function where the argument c is not properly sanitized before being used in system calls. This allows attackers to inject malicious operating system commands through the vulnerable parameter, effectively bypassing normal security controls and executing arbitrary code on the target system. The flaw exists within the Linux-specific utility functions of the trojan, indicating that the vulnerability is specifically designed to exploit Unix-like operating systems where the trojan is deployed. The command injection occurs when user-supplied input is directly incorporated into system execution contexts without proper validation or escaping mechanisms.
The operational impact of this vulnerability extends beyond simple remote code execution to encompass full system compromise and potential lateral movement within network environments. Attackers can leverage this vulnerability to establish persistent backdoors, exfiltrate sensitive data, or use compromised systems as launch points for further attacks against other networked devices. The high attack complexity and difficulty of exploitation suggest that while the vulnerability is dangerous, it may require sophisticated attack techniques or specific conditions to be successfully exploited, though the public disclosure of exploit methods reduces the barrier to entry for threat actors. This vulnerability directly aligns with CWE-77 and CWE-88 categories related to command injection and improper neutralization of special elements used in OS commands, which are fundamental security weaknesses in software development.
The exploitability of CVE-2025-5525 demonstrates the critical importance of proper input validation and secure coding practices in malware and legitimate software alike. Given that this vulnerability affects a trojan utility function, it highlights the need for comprehensive security testing of all code paths, particularly those involving system interactions and user input processing. Organizations should immediately assess their exposure to this vulnerability by identifying all instances of affected Jrohy trojan versions and implementing immediate mitigations including patching to the latest available versions, network segmentation, and monitoring for suspicious command execution patterns. The ATT&CK framework categorizes this vulnerability under T1059.001 for command and scripting interpreter, indicating that exploitation would result in adversary access to command-line interfaces and system execution capabilities. Security teams should also consider implementing behavioral monitoring solutions to detect anomalous command execution patterns that might indicate exploitation attempts, while ensuring that all system updates and patches are applied promptly to prevent successful exploitation attempts.