CVE-2024-49027

Use After Free (CWE-416)

Published: Nov 12, 2024

010
CVSS 7.8EPSS 0.05%High
CVE info copied to clipboard

Summary

Microsoft Excel Remote Code Execution Vulnerability. This is a Use After Free vulnerability that affects Microsoft Excel. It has a CVSS v3.1 base score of 7.8, indicating a high severity. The vulnerability requires user interaction and can be exploited through a local attack vector.

Impact

If successfully exploited, this vulnerability could allow an attacker to execute arbitrary code with the same privileges as the user running Excel. The potential impacts are high for confidentiality, integrity, and availability, meaning an attacker could potentially read sensitive information, modify data, or disrupt the normal operation of the affected system.

Exploitation

There is no evidence that a public proof-of-concept exists. There is no evidence of proof of exploitation at the moment.

Patch

A patch is available. Microsoft released a security update to address this vulnerability on November 12, 2024.

Mitigation

1. Apply the security update provided by Microsoft as soon as possible. 2. Implement the principle of least privilege, ensuring users only have the necessary permissions to perform their tasks. 3. Educate users about the risks of opening untrusted Excel files or documents from unknown sources. 4. Consider using application whitelisting to prevent unauthorized applications from executing. 5. Keep antivirus and anti-malware solutions up-to-date and perform regular scans. 6. Monitor for any suspicious activities or unauthorized changes in systems running Microsoft Excel.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Timeline

CVSS

A CVSS base score of 7.8 has been assigned.

Nov 12, 2024 at 5:55 PM / microsoft
First Article

Feedly found the first article mentioning CVE-2024-49027. See article

Nov 12, 2024 at 6:10 PM / Vulners.com RSS Feed
CVSS Estimate

Feedly estimated the CVSS score as HIGH

Nov 12, 2024 at 6:11 PM
CVE Assignment

NVD published the first details for CVE-2024-49027

Nov 12, 2024 at 6:15 PM
CVSS Estimate

Feedly estimated the CVSS score as MEDIUM

Nov 12, 2024 at 6:36 PM
Detection in Vulnerability Scanners

Detection for the vulnerability has been added to Nessus (210854)

Nov 13, 2024 at 2:15 AM
EPSS

EPSS Score was set to: 0.05% (Percentile: 22.9%)

Nov 13, 2024 at 5:06 PM
EPSS

EPSS Score was set to: 0.05% (Percentile: 20.9%)

Nov 18, 2024 at 8:25 PM
Static CVE Timeline Graph

Affected Systems

Microsoft/excel
+null more

Patches

Microsoft
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References

Microsoft Excel Remote Code Execution Vulnerability
Why does the CVE title indicate that this is a remote code execution? Remote Code Execution

News

Microsoft Excel Remote Code Execution Vulnerability
Why does the CVE title indicate that this is a remote code execution? Remote Code Execution
2024-45 - Adobe, Mozilla, Canonical, Red Hat, Microsoft, Google, Jenkins, GitHub, Spring 🗂️
Advisory Week Week 45, 2024 National Cyber Awareness System CISA Releases Nineteen Industrial Control Systems Advisories CISA Adds Two Known Exploited Vulnerabilities to Catalog Palo Alto Networks Emphasizes Hardening Guidance Fortinet Releases Security Updates for Multiple Products Microsoft Releases November 2024 Security Updates Adobe Releases Security Updates for Multiple Products Ivanti Releases Security Updates for Multiple Products JCDC’s Collaborative Efforts Enhance Cybersecurity for the 2024 Olympic and Paralympic Games Citrix Releases Security Updates for NetScaler and Citrix Session Recording CISA Releases Five Industrial Control Systems Advisories CISA, FBI, NSA, and International Partners Release Joint Advisory on 2023 Top Routinely Exploited Vulnerabilities CISA Adds Five Known Exploited Vulnerabilities to Catalog Adobe Security Bulletins and Advisories Security updates available for Adobe Photoshop APSB24-89 Security Updates Available for Adobe Commerce APSB24-90 Security Updates Available for Adobe Illustrator APSB24-66 APSB24-87 Security Update Available for Adobe InDesign APSB24-88 Security Updates Available for Adobe Bridge APSB24-77 Security Updates Available for Adobe Audition APSB24-83 Mozilla Security Advisories Security Vulnerabilities fixed in Thunderbird 132.0.1 mfsa2024-62 Security Vulnerabilities fixed in Thunderbird 128.4.3 mfsa2024-61 Ubuntu Security Notices Linux kernel vulnerabilities: USN-7089-6 / USN-7088-5 / USN-7089-5 / USN-7110-1 / USN-7089-4 / USN-7100-2 / USN-7100-1 GD Graphics Library vulnerability: USN-7112-1 Go vulnerabilities: USN-7111-1 / USN-7109-1 Linux kernel vulnerability:
Warning of 12 new vulnerabilities targeting domestic information systems - Vietnam.vn
... cyber attacks on systems in Vietnam. Through recording information ... Recently, Joint Stock Commercial Bank for Foreign Trade of Vietnam ...
Microsoft’s Security Update in November on High-Risk Vulnerabilities in Multiple Products
On November 13, NSFOCUS CERT detected that Microsoft released a security update patch for November, which fixed 89 security issues, including Windows, Microsoft SQL Server, Microsoft Office, Azure, Open Source Software, Microsoft Visual Studio, System Center and other widely used products, including high-risk vulnerabilities such as privilege escalation vulnerability and remote code execution vulnerability. Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Excel 2016 can no longer load add-ins after Nov. 2024 update KB5002653
A blog reader contacted me by email on November 13, 2024 and noted that after installing the KB5002653 update, no add-ins are loaded when Excel is started (I mentioned this in the article Patchday: Microsoft Office Updates (November 12, 2024) ). Blog reader kheldorn pointed in a comment to the reddit.com post Office addins broken after updates ?, where another user reports this error in Microsoft Excel 2016 and asks if anyone else is affected.
See 34 more articles and social media posts

CVSS V3.1

Attack Vector:Local
Attack Complexity:Low
Privileges Required:None
User Interaction:Required
Scope:Unchanged
Confidentiality:High
Integrity:High
Availability Impact:High

Categories

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