CVE-2008-4584 in Mail
Summary
by MITRE
Insecure method vulnerability in Chilkat Mail 7.8 ActiveX control (ChilkatCert.dll) allows remote attackers to overwrite arbitrary files via a full pathname to the SaveLastError method.
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Analysis
by VulDB Data Team • 10/15/2024
The vulnerability identified as CVE-2008-4584 resides within the Chilkat Mail 7.8 ActiveX control, specifically in the ChilkatCert.dll component, presenting a critical security flaw that enables remote attackers to execute arbitrary file overwrite operations. This insecure method vulnerability fundamentally compromises the integrity of file operations within the affected software environment, creating a pathway for malicious actors to manipulate system files through crafted input parameters.
The technical flaw manifests in the SaveLastError method of the ChilkatCert.dll ActiveX control, where the implementation fails to properly validate or sanitize input parameters containing full pathnames. When an attacker supplies a malicious pathname to this method, the control processes the request without adequate security checks, allowing the overwrite operation to proceed to any location within the file system. This behavior directly violates fundamental security principles of input validation and privilege separation, as the method accepts user-supplied paths without proper authorization or sanitization mechanisms.
The operational impact of this vulnerability extends beyond simple file overwrites, as it provides attackers with the capability to modify critical system files, configuration data, or application resources that could lead to complete system compromise. An attacker could potentially overwrite system binaries, configuration files, or even security-related components, creating persistent backdoors or disabling critical system functions. The remote nature of this attack vector means that exploitation can occur without physical access to the target system, making it particularly dangerous in networked environments where ActiveX controls are enabled.
This vulnerability aligns with CWE-22, which addresses "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", and represents a classic example of insecure file handling in ActiveX components. The attack pattern corresponds to techniques described in the MITRE ATT&CK framework under T1059.007 for "Command and Scripting Interpreter: PowerShell" and T1074.001 for "Data Staging: Local Data Staging", as attackers can leverage this flaw to manipulate system resources and potentially establish persistent access. The vulnerability also relates to T1566.001 for "Phishing: Spearphishing Attachment" where malicious attachments containing crafted ActiveX calls could exploit this flaw during normal user operations.
Mitigation strategies should prioritize immediate removal or disabling of the vulnerable Chilkat Mail 7.8 ActiveX control from affected systems, particularly in environments where ActiveX is enabled. System administrators should implement strict input validation policies and consider deploying application whitelisting solutions to prevent execution of untrusted ActiveX components. Network segmentation and firewall rules should be configured to restrict access to systems running vulnerable ActiveX controls. Additionally, organizations should conduct comprehensive vulnerability assessments to identify all instances of this ActiveX control and ensure proper patching or replacement with secure alternatives. The vulnerability underscores the importance of secure coding practices in ActiveX development, particularly around file path validation and privilege management, as outlined in secure coding standards from organizations such as OWASP and CERT/CC.