CVE-2021-27626 Explained : Impact and Mitigation

SAP Internet Graphics Service, versions - 7.20, 7.20EXT, 7.53, 7.20_EX2, 7.81, allows an unauthenticated attacker to trigger an internal memory corruption error in the system, causing a crash and rendering it unavailable.

Understanding CVE-2021-27626

This section covers the details regarding the CVE-2021-27626 vulnerability.

What is CVE-2021-27626?

CVE-2021-27626 is a vulnerability in SAP Internet Graphics Service that enables an attacker to crash the system by exploiting insufficient input validation in a specific method.

The Impact of CVE-2021-27626

The exploitation of this vulnerability can lead to a system crash, making it unavailable for use, without allowing the attacker to view or modify any data.

Technical Details of CVE-2021-27626

Here we delve into the specifics of the CVE-2021-27626 vulnerability.

Vulnerability Description

The vulnerability arises from the inadequate input validation in method CMiniXMLParser::Parse(), allowing for a memory corruption error.

Affected Systems and Versions

Affected systems include SAP Internet Graphics Service versions: < 7.20, < 7.20EXT, < 7.53, < 7.20_EX2, < 7.81.

Exploitation Mechanism

An unauthenticated attacker can exploit the vulnerability by submitting a malicious IGS request over a network after retrieving a system state value.

Mitigation and Prevention

This section provides insights into mitigating and preventing CVE-2021-27626.

Immediate Steps to Take

Organizations should apply relevant patches provided by SAP to address this vulnerability and ensure system security.

Long-Term Security Practices

Regular security assessments, code review, and security training for developers can help prevent such vulnerabilities in the future.

Patching and Updates

Stay updated with security bulletins from SAP and promptly apply patches to mitigate the risk of exploitation.