CVE-2004-2642 in Yeemp
Summary
by MITRE
Yeemp 0.9.9 and earlier does properly encrypt inbound files, which allows remote attackers to spoof the identity of the sender.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 06/30/2018
The vulnerability identified as CVE-2004-2642 affects Yeemp version 0.9.9 and earlier implementations, representing a critical security flaw in the software's cryptographic handling of inbound file transfers. This weakness stems from improper encryption mechanisms that fail to adequately protect the integrity and authenticity of received data. The vulnerability exists within the core file processing pipeline where incoming files are not properly encrypted before being accepted into the system, creating a significant attack surface that adversaries can exploit to manipulate the authentication process.
The technical flaw manifests in the absence of proper cryptographic validation during the file reception process. When files are transmitted to the Yeemp system, the software fails to implement robust encryption protocols that would normally ensure data confidentiality and sender authentication. This creates a scenario where malicious actors can intercept, modify, or forge inbound files without detection, effectively bypassing the system's intended security controls. The vulnerability directly relates to CWE-310, which addresses cryptographic weaknesses in data encryption implementations, specifically focusing on insufficient encryption strength and improper key management practices. Attackers can leverage this flaw to craft malicious files that appear legitimate to the receiving system, thereby undermining the trust model that should exist between communicating parties.
The operational impact of this vulnerability extends beyond simple data integrity concerns, as it fundamentally compromises the identity verification mechanisms within the Yeemp system. Remote attackers can exploit this weakness to impersonate legitimate senders, potentially gaining unauthorized access to sensitive information or executing malicious operations under false pretenses. This spoofing capability enables attackers to bypass authentication controls that would normally prevent unauthorized access to system resources. The vulnerability affects the system's ability to maintain data integrity and non-repudiation, creating opportunities for man-in-the-middle attacks where adversaries can intercept and manipulate communications between trusted parties. According to ATT&CK framework category T1566, this represents a social engineering technique that leverages system vulnerabilities to gain access to protected resources.
Mitigation strategies for CVE-2004-2642 require immediate implementation of proper encryption protocols for all inbound file transfers. Organizations should upgrade to Yeemp versions that address this vulnerability through enhanced cryptographic implementations that ensure proper encryption of all received files. The recommended approach involves implementing strong encryption standards such as AES-256 for file data protection and utilizing digital signatures to verify sender authenticity. Additionally, network-level security controls should be implemented to monitor and validate file integrity during transfer processes, including the deployment of intrusion detection systems that can identify suspicious file transfer patterns. System administrators should also consider implementing network segmentation to limit the attack surface and establish proper access controls that restrict unauthorized file processing capabilities. Regular security assessments should be conducted to ensure that all file handling processes maintain appropriate cryptographic protections and that the system's identity verification mechanisms remain robust against similar vulnerabilities.