CVE-2020-26174 : Exploit Details and Defense Strategies
Learn about CVE-2020-26174, a high-severity vulnerability in Tangro Business Workflow before 1.18.1 allowing attackers to upload unauthorized files, impacting confidentiality, integrity, and availability.
Tangro Business Workflow before version 1.18.1 allows attackers to bypass file upload restrictions, potentially leading to unauthorized file uploads.
Understanding CVE-2020-26174
This CVE involves a vulnerability in Tangro Business Workflow that enables attackers to upload any file as an attachment to a work item by circumventing client-side file type restrictions.
What is CVE-2020-26174?
The vulnerability in Tangro Business Workflow before version 1.18.1 allows attackers to bypass server-enforced file type restrictions, enabling them to upload any file as an attachment to a work item.
The Impact of CVE-2020-26174
The impact of this CVE is rated as high, with a CVSS base score of 8.8. The confidentiality, integrity, and availability of the system are all at risk due to this vulnerability.
Technical Details of CVE-2020-26174
This section provides more in-depth technical details about the CVE.
Vulnerability Description
Tangro Business Workflow before version 1.18.1 fails to properly enforce file type restrictions on the client-side, allowing attackers to upload unauthorized files.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by uploading any file as an attachment to a work item, bypassing the intended file type restrictions.
Mitigation and Prevention
To address CVE-2020-26174, follow these mitigation strategies:
Immediate Steps to Take
- Update Tangro Business Workflow to version 1.18.1 or later to patch the vulnerability.
- Implement additional server-side validation for file uploads to complement client-side restrictions.
Long-Term Security Practices
- Regularly monitor and audit file uploads and attachments for any suspicious activity.
- Educate users on safe file handling practices to prevent unauthorized uploads.
Patching and Updates
- Apply security patches and updates promptly to ensure the system is protected against known vulnerabilities.