Description Preview
Overview
This vulnerability (CVE-2021-31865) affects the file attachment functionality in Redmine, a popular open-source project management web application. Redmine typically restricts the types of files that can be uploaded as attachments based on their file extensions. However, in the affected versions, this restriction mechanism can be bypassed, allowing users to upload files with extensions that would normally be prohibited. This could potentially lead to the execution of malicious code if a user uploads a dangerous file type that is then accessed by other users or processed by the system. The vulnerability affects all Redmine installations running versions before 4.0.9, 4.1.x before 4.1.3, and 4.2.x before 4.2.1.
Remediation
To address this vulnerability, system administrators should upgrade their Redmine installation to the following patched versions:
- Version 4.0.9 or later (for 4.0.x users)
- Version 4.1.3 or later (for 4.1.x users)
- Version 4.2.1 or later (for 4.2.x users)
Debian users can apply the security update referenced in DLA 2658-1. If immediate upgrading is not possible, administrators should consider temporarily disabling file uploads or implementing additional security controls at the web server or application level to restrict file uploads until the patch can be applied.
References
- Redmine Security Advisory: https://www.redmine.org/news/131
- Redmine Security Advisories page: https://www.redmine.org/projects/redmine/wiki/Security_Advisories
- Debian LTS Security Announcement: https://lists.debian.org/debian-lts-announce/2021/05/msg00013.html
Industry ExposureMost to leastThis section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.
- Accommodation & Food ServicesAccommodation & Food Services
- Administrative, Support, Waste Management & Remediation ServicesAdministrative, Support, Waste Management & Remediation Services
- Agriculture, Forestry Fishing & HuntingAgriculture, Forestry Fishing & Hunting
- Arts, Entertainment & RecreationArts, Entertainment & Recreation
- ConstructionConstruction
- Educational ServicesEducational Services
- Finance and InsuranceFinance and Insurance
- Health Care & Social AssistanceHealth Care & Social Assistance
- InformationInformation
- Management of Companies & EnterprisesManagement of Companies & Enterprises
- ManufacturingManufacturing
- MiningMining
- Other Services (except Public Administration)Other Services (except Public Administration)
- Professional, Scientific, & Technical ServicesProfessional, Scientific, & Technical Services
- Public AdministrationPublic Administration
- Real Estate Rental & LeasingReal Estate Rental & Leasing
- Retail TradeRetail Trade
- Transportation & WarehousingTransportation & Warehousing
- UtilitiesUtilities
- Wholesale TradeWholesale Trade
