CVE-2023-36413 is classified as a security feature bypass vulnerability affecting Microsoft Office products, including Microsoft 365 Apps, Office 2016, Office 2019, and Office Long-Term Servicing Channel 2021. This vulnerability allows attackers to potentially manipulate the integrity of data. With a CVSS score of 6.5, it is categorized as medium severity, indicating a significant risk to organizations that utilize these products.
The vulnerability was published on November 14, 2023, and has been marked as modified since its initial disclosure. Organizations using affected versions should be particularly vigilant, as the vulnerability is exploitable over the network with low complexity. User interaction is required for successful exploitation, which may further increase the risk of data manipulation in environments where users regularly open documents from untrusted sources.
Given the nature of the vulnerability, the urgency for defenders is considerable. Organizations should prioritize patching immediately to prevent any potential misuse that could exploit this vulnerability. Even though the risk is classified as medium, the potential impact on data integrity cannot be overlooked, especially in environments that handle sensitive information.
As of now, there is no public knowledge of any exploits related to this vulnerability, and it has not been included in the Known Exploited Vulnerabilities (KEV) catalog. However, organizations should continuously monitor for updates and advisories related to CVE-2023-36413.
Vulnerability Details
The official description of CVE-2023-36413 states that it is a Microsoft Office Security Feature Bypass Vulnerability. The vulnerability is primarily characterized by its ability to allow attackers to bypass security features that are critical for maintaining data integrity.
The CVSS score of 6.5 reflects a medium severity level, with a network attack vector, low attack complexity, no privileges required, and a requirement for user interaction. The confidentiality impact is rated as none, while the integrity impact is rated as high, indicating that successful exploitation could lead to significant data integrity risks. The availability impact is also rated as none.
Technical Analysis
The root cause of CVE-2023-36413 can be traced back to how Microsoft Office handles security features. The vulnerability allows unauthorized manipulation of document integrity, which can be exploited when users open affected documents. The attack vector is network-based, and while the complexity is low, user interaction is necessary, which serves as a limiting factor for potential exploit scenarios.
No special privileges are required for exploitation, which means that any user with access to the vulnerable application can potentially be affected. This highlights the importance of user education regarding the risks associated with opening documents from unknown sources.
Risk & Impact Analysis
The real-world deployment risk associated with CVE-2023-36413 is significant, as it affects a broad range of Microsoft Office products widely used across various organizations. The potential impact on data integrity could lead to unauthorized alterations in documents, which can have serious implications for business operations, especially in regulated industries.
Organizations should be particularly concerned about the blast radius of this vulnerability given the diverse environments in which Microsoft Office products are deployed. The urgency for remediation is highlighted by the medium CVSS score and the requirement for user interaction, which may not always be a sufficient barrier against exploitation.
Given the CVSS score and the current lack of known exploits, organizations should schedule remediation in their priority patch cycle to address this vulnerability proactively.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The following Microsoft products are affected by CVE-2023-36413:
1. Microsoft 365 Apps 2. Microsoft Office 2016 3. Microsoft Office 2019 4. Microsoft Office Long Term Servicing Channel 2021 Organizations should assume that all versions prior to the vendor patch are vulnerable.
Mitigation & Remediation
To mitigate the risks associated with CVE-2023-36413, organizations should apply the available patches for the affected Microsoft products. Keeping software updated is the most effective way to protect against known vulnerabilities.
In addition to applying patches, organizations should consider implementing configuration hardening by restricting user permissions and enforcing policies that limit the opening of documents from untrusted sources. Continuous security testing can help identify and remediate similar vulnerabilities in the future.
Continuous security testing can also provide insights into the effectiveness of current security measures and ensure that any weaknesses are addressed promptly.
Detection Guidance
To detect potential exploitation of CVE-2023-36413, organizations should monitor logs for any unusual activities related to Microsoft Office applications. Key indicators include:
- Anomalies in document integrity - Unexpected modifications to documents - Any unauthorized access attempts to Office applications
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2023-36413 lies in its potential to expose organizations to data integrity risks that can undermine trust in their document handling processes. This vulnerability is part of a broader trend where security features are increasingly targeted by attackers to manipulate data in critical applications.
Security teams should consider this vulnerability as a critical lesson emphasizing the need for robust security measures, including user training on safe document handling practices and the importance of keeping software up to date.
Penetration testing methodology can further enhance an organization’s security posture by identifying vulnerabilities before they can be exploited.
By adopting proactive security measures and fostering a culture of security awareness, organizations can mitigate the risks associated with vulnerabilities like CVE-2023-36413.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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