CVE-2015-1641 is a high-severity memory corruption vulnerability found in Microsoft Office and related products. This vulnerability allows remote attackers to execute arbitrary code via a crafted RTF document. Affected versions include Microsoft Word 2007 SP3, Office 2010 SP2, Word 2010 SP2, Word 2013 SP1, Word for Mac 2011, and several others. The impact is significant, as successful exploitation may lead to unauthorized access and control over the user's system.
The CVSS score for this vulnerability is 7.8, indicating a high severity level. This score reflects the potential for exploitation, as the attack complexity is low, requiring no privileges and only user interaction. Given the widespread use of Microsoft Office products, the risk to organizations is considerable.
Organizations should prioritize patching immediately. The vulnerability has been acknowledged by Microsoft, and detailed remediation steps are available through official channels. Failure to address this vulnerability could result in significant disruptions and data breaches.
As of now, the vulnerability is included in the Known Exploited Vulnerabilities (KEV) catalog, indicating active exploitation in the wild. This should add urgency to the remediation efforts for affected organizations.
Vulnerability Details
Officially classified as a memory corruption vulnerability, CVE-2015-1641 allows attackers to execute arbitrary code, which could lead to a full system compromise. The CVSS score of 7.8 indicates a high severity, emphasizing the need for immediate attention. The vulnerability affects multiple Microsoft products, including Word and SharePoint, and was published on April 14, 2015.
Technical Analysis
The root cause of CVE-2015-1641 stems from improper handling of rich text format (RTF) files in memory within Microsoft Office applications. The attack vector is local, requiring a user to open a malicious RTF document. While the attack complexity is low, it necessitates user interaction, as the victim must open the document to trigger the vulnerability.
Regarding impact, the vulnerability has high confidentiality, integrity, and availability impacts. Successful exploitation can lead to arbitrary code execution, allowing attackers to manipulate sensitive information, disrupt services, or gain control over the system.
Risk & Impact Analysis
Organizations deploying Microsoft Office products are at significant risk due to the widespread use of these applications in corporate environments. The blast radius is extensive, as multiple versions of Microsoft Office and related services are affected. The urgency assessment based on the high CVSS score and inclusion in the KEV catalog indicates that organizations should address this vulnerability in their priority patch cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The vulnerability affects the following versions: Microsoft Office 2007 SP3, Office 2010 SP2, Word 2010 SP2, Word 2013 SP1, Word for Mac 2011, Office Compatibility Pack SP3, Word Automation Services on SharePoint Server 2010 SP2 and 2013 SP1, and Office Web Apps Server 2010 SP2 and 2013 SP1. Organizations using these versions should verify their systems are updated.
Mitigation & Remediation
To mitigate the risks associated with CVE-2015-1641, organizations should apply the latest patches provided by Microsoft. Detailed information on the required updates can be found in the official Microsoft advisory. Additionally, organizations should implement security best practices such as restricting access to trusted networks and monitoring for unusual activity.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor log files for indicators of malicious RTF document access, behavioral anomalies in user activities, and network signatures associated with known attack patterns.
AppSecure Threat Intelligence Insight
CVE-2015-1641 highlights the ongoing risks associated with memory corruption vulnerabilities in widely used software. As attackers continue to exploit such weaknesses, organizations must remain vigilant in applying security updates and conducting regular security assessments. By understanding the patterns of exploitation, security teams can enhance their defenses against similar threats. For best practices in vulnerability management, refer to our guides on vulnerability management programs and penetration testing methodologies to better prepare for future vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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