CVE-2021-27617 : Vulnerability Insights and Analysis
Learn about CVE-2021-27617, a medium-severity vulnerability in SAP Process Integration versions < 7.10 to < 7.50. Get insights into the impact, affected systems, and mitigation steps.
A vulnerability has been identified in SAP Process Integration's Integration Builder Framework versions < 7.10 to < 7.50. This vulnerability could allow an attacker to execute a Denial-of-Service attack by uploading a malicious XML document.
Understanding CVE-2021-27617
This section delves into the details of the CVE-2021-27617 vulnerability.
What is CVE-2021-27617?
The Integration Builder Framework of SAP Process Integration versions < 7.10 to < 7.50 lacks sufficient validation for XML documents uploaded from a local source. This oversight enables an attacker to craft a malicious XML file that, upon uploading and parsing by the application, could trigger Denial-of-Service conditions. The exploitation leads to significant consumption of system memory, severely impacting system availability.
The Impact of CVE-2021-27617
The impact of this vulnerability is rated with a CVSS base score of 4.9, signifying a medium severity with high availability impact. The attack complexity is low, with a network attack vector and high privileges required.
Technical Details of CVE-2021-27617
This section covers the technical aspects of the CVE-2021-27617 vulnerability.
Vulnerability Description
The vulnerability arises from the inadequate validation of XML documents uploaded locally, allowing attackers to initiate Denial-of-Service attacks.
Affected Systems and Versions
SAP Process Integration versions < 7.10, < 7.11, < 7.20, < 7.30, < 7.31, < 7.40, and < 7.50 are affected by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting malicious XML documents and uploading them to trigger Denial-of-Service conditions.
Mitigation and Prevention
In this section, we explore the measures to mitigate and prevent exploitation of CVE-2021-27617.
Immediate Steps to Take
To mitigate the risk, it is crucial to validate XML documents rigorously before uploading, ensuring secure parsing mechanisms.
Long-Term Security Practices
Long-term security practices include regular security updates, monitoring, and enhancing XML validation protocols to prevent similar vulnerabilities.
Patching and Updates
Ensure timely application of patches provided by SAP Process Integration to address and fix CVE-2021-27617.