CVE-2014-4077 is a high-severity vulnerability in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, and Office 2007 SP3. This vulnerability allows remote attackers to bypass a sandbox protection mechanism via a crafted PDF document when IMJPDCT.EXE (IME for Japanese) is installed. It was actively exploited in the wild in 2014, emphasizing the urgency for organizations to address it.
The CVSS score for this vulnerability is 7.8, categorizing it as high severity. This score indicates that the vulnerability poses a significant risk to affected systems, as it can potentially lead to unauthorized access and privilege escalation.
Risk to organizations includes potential unauthorized access to sensitive information and disruption of services. Attackers may leverage this vulnerability to escalate privileges, which can lead to further exploitation within the network.
Organizations should prioritize patching immediately to mitigate risks associated with this vulnerability, especially since it has been documented as exploited in the wild.
Vulnerability Details
This vulnerability allows attackers to bypass the sandbox protection mechanism implemented within the affected systems. The specific vector for exploitation is the IMJPDCT.EXE component, which is part of the Input Method Editor for Japanese. The vulnerability affects multiple Microsoft products, including Windows 7, Windows Vista, and Office 2007.
CVSS 3.1 score for CVE-2014-4077 is 7.8, indicating a high severity level. The attack vector is local, and the complexity is low, meaning that exploitation does not require advanced skills. User interaction is required, as the crafted PDF must be opened by the victim.
Technical Analysis
The root cause of this vulnerability lies in the handling of crafted PDF documents by the IMJPDCT.EXE component. Attackers can exploit this weakness by delivering a malicious PDF that, when opened, allows the bypassing of the sandbox protections, leading to potential escalation of privileges.
The attack vector is classified as local, requiring the attacker to have physical or remote local access to the system. The attack complexity is low, meaning that attackers can exploit the vulnerability without significant effort. No privileges are required to exploit the vulnerability, but user interaction is mandatory, as the user must open the crafted PDF.
If successfully exploited, this vulnerability can lead to high confidentiality, integrity, and availability impacts, as attackers can gain unauthorized access to sensitive data and potentially disrupt system functionality.
Risk & Impact Analysis
The risk associated with CVE-2014-4077 is significant, given that it allows attackers to bypass critical security measures. Organizations that continue to use affected products without applying patches may expose themselves to serious security breaches. The potential blast radius includes unauthorized access to sensitive information and disruption of services.
The urgency for organizations to address this vulnerability is critical due to its high CVSS score and the potential for exploitation in the wild. Organizations should assess their deployments and prioritize patching as part of their response strategy.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The affected versions include Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, and Office 2007 SP3. All versions prior to the vendor patch are vulnerable.
Mitigation & Remediation
Organizations should apply the latest updates provided by Microsoft to address this vulnerability. The patch information can be found in the Microsoft Security Bulletin MS14-078. For those unable to apply patches immediately, consider implementing configuration hardening measures, restricting access to vulnerable applications, and monitoring for unusual activity.
Additionally, organizations may benefit from conducting regular penetration testing to identify similar vulnerabilities within their environment.
Detection Guidance
To detect potential exploitation attempts, organizations should monitor for log indicators such as unexpected process executions involving IMJPDCT.EXE, and behavioral anomalies in user interactions with PDF documents. Network signatures can also be developed to detect crafted PDF files that may attempt to exploit this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2014-4077 lies in its demonstration of the risks associated with improperly secured input methods. It highlights the importance of rigorous security measures in software development, particularly for components that interact with user input.
This vulnerability represents a broader trend where attackers target input methods and components that allow for user interaction. Security teams should learn from such vulnerabilities and implement strategies to protect against similar risks.
For organizations looking to enhance their security posture, investing in comprehensive security programs, including regular vulnerability management programs, can yield significant benefits in identifying and mitigating vulnerabilities.
Moreover, organizations should consider adopting a proactive approach through continuous security assessments, such as penetration testing methodology, to consistently evaluate their security defenses.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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