CVE-2008-4583 in FTP
Summary
by MITRE
Insecure method vulnerability in the Chilkat FTP 2.0 ActiveX component (ChilkatCert.dll) allows remote attackers to overwrite arbitrary files via a full pathname in the SavePkcs8File method.
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Analysis
by VulDB Data Team • 10/15/2024
The vulnerability identified as CVE-2008-4583 resides within the Chilkat FTP 2.0 ActiveX component, specifically in the ChilkatCert.dll library that handles cryptographic certificate operations. This flaw manifests as an insecure method that permits remote attackers to execute arbitrary file overwrite operations through manipulation of the SavePkcs8File method. The vulnerability represents a critical security weakness that directly impacts the integrity and confidentiality of systems utilizing this component, particularly in enterprise environments where automated certificate management and secure file transfer operations are common.
The technical implementation of this vulnerability stems from insufficient input validation within the SavePkcs8File method of the ChilkatCert.dll ActiveX component. When the method processes a full pathname parameter, it fails to properly sanitize or validate the input path, allowing attackers to specify arbitrary file locations on the target system. This insecure coding practice enables path traversal attacks where malicious actors can manipulate the method to write certificate files to critical system locations, potentially overwriting essential system files or placing malicious content in privileged directories. The vulnerability operates at the file system level and can be exploited without requiring authentication or elevated privileges beyond what is normally required for the component's operation.
The operational impact of this vulnerability extends beyond simple file overwrite capabilities and represents a significant threat to system integrity and security posture. Attackers can leverage this weakness to compromise the security of automated certificate management systems, potentially leading to man-in-the-middle attacks, credential theft, or system compromise through the placement of malicious certificates in trusted locations. The vulnerability affects systems where the Chilkat FTP 2.0 ActiveX component is deployed, particularly those in enterprise environments that rely on automated certificate handling for secure communications, web services, or application security. Organizations utilizing this component in production environments face potential exposure to attackers who can exploit the vulnerability to gain unauthorized access to critical system resources.
Mitigation strategies for CVE-2008-4583 should prioritize immediate remediation through vendor-provided patches or updates to the Chilkat FTP 2.0 ActiveX component. System administrators should implement strict input validation measures and consider restricting the execution environment of applications using this component. The vulnerability aligns with CWE-22 Path Traversal and CWE-73 Path Traversal, both of which are categorized under the broader class of insecure direct object reference flaws in the Common Weakness Enumeration framework. From an ATT&CK perspective, this vulnerability maps to techniques involving file and directory permissions modification and privilege escalation through malicious file placement. Organizations should also consider implementing network segmentation, monitoring for unusual file system activity, and conducting comprehensive vulnerability assessments to identify any systems that may be running affected versions of the Chilkat component. The remediation process should include thorough testing of patched components to ensure that the fix does not introduce regressions in legitimate functionality while maintaining the security posture of the overall system infrastructure.