CVE-2020-26826 Explained : Impact and Mitigation
Learn about CVE-2020-26826 affecting SAP NetWeaver AS JAVA versions 7.31, 7.40, 7.50. Discover the impact, technical details, and mitigation steps for this Unrestricted File Upload vulnerability.
A vulnerability in SAP NetWeaver AS JAVA versions 7.31, 7.40, and 7.50 allows attackers to perform Unrestricted File Upload, potentially leading to serious consequences.
Understanding CVE-2020-26826
This CVE involves a security issue in SAP NetWeaver AS JAVA that enables unauthorized file uploads.
What is CVE-2020-26826?
The vulnerability in SAP NetWeaver AS JAVA versions 7.31, 7.40, and 7.50 permits attackers to upload any file, including script files, without proper validation, resulting in Unrestricted File Upload.
The Impact of CVE-2020-26826
The vulnerability's impact is rated as medium severity with a CVSS base score of 6.5. It can lead to high availability impact, allowing attackers to upload malicious files.
Technical Details of CVE-2020-26826
This section delves into the technical aspects of the CVE.
Vulnerability Description
The flaw in SAP NetWeaver AS JAVA versions 7.31, 7.40, and 7.50 enables attackers to upload files without appropriate validation, potentially leading to Unrestricted File Upload.
Affected Systems and Versions
- Product: SAP NetWeaver AS JAVA
- Vendor: SAP SE
- Vulnerable Versions: < 7.31, < 7.40, < 7.50
Exploitation Mechanism
Attackers can exploit this vulnerability by uploading files, including malicious scripts, without undergoing proper file format validation.
Mitigation and Prevention
Protecting systems from CVE-2020-26826 is crucial to prevent unauthorized file uploads.
Immediate Steps to Take
- Apply security patches provided by SAP promptly.
- Implement proper file format validation mechanisms.
- Monitor file uploads for suspicious activities.
Long-Term Security Practices
- Regularly update and patch SAP NetWeaver AS JAVA to mitigate known vulnerabilities.
- Conduct security assessments and audits to identify and address potential weaknesses.
Patching and Updates
Ensure that the affected SAP NetWeaver AS JAVA versions (< 7.31, < 7.40, < 7.50) are updated with the latest security patches to address the Unrestricted File Upload vulnerability.