CVE-2020-26835 : What You Need to Know

SAP NetWeaver AS ABAP versions 740, 750, 751, 752, 753, 754 are vulnerable to Reflected Cross-Site Scripting (XSS) due to insufficient URL encoding.

Understanding CVE-2020-26835

This CVE involves a vulnerability in SAP NetWeaver AS ABAP that could allow an attacker to execute malicious scripts in a user's browser through a crafted URL.

What is CVE-2020-26835?

SAP NetWeaver AS ABAP versions 740, 750, 751, 752, 753, 754 are prone to a Reflected Cross-Site Scripting (XSS) vulnerability due to inadequate URL encoding.

The Impact of CVE-2020-26835

The vulnerability could be exploited by an attacker to inject and execute malicious JavaScript in a victim's browser, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2020-26835

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The issue arises from the lack of proper URL encoding in SAP NetWeaver AS ABAP, allowing attackers to insert harmful scripts into URLs.

Affected Systems and Versions

Product: SAP NetWeaver AS ABAP
Vendor: SAP SE
Vulnerable Versions: < 740, < 750, < 751, < 752, < 753, < 754

Exploitation Mechanism

The vulnerability can be exploited by crafting URLs with malicious JavaScript code, which, when clicked by a user, gets executed in their browser.

Mitigation and Prevention

Protecting systems from CVE-2020-26835 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by SAP promptly.
Educate users about the risks of clicking on suspicious links.
Implement web application firewalls to filter and block malicious traffic.

Long-Term Security Practices

Regularly update and patch SAP NetWeaver AS ABAP to address security vulnerabilities.
Conduct security training for developers to promote secure coding practices.
Monitor and analyze web traffic for any unusual patterns that may indicate an attack.

Patching and Updates

Ensure that all systems running vulnerable versions of SAP NetWeaver AS ABAP are updated with the latest patches to mitigate the XSS risk.