CVE-2021-35231 Explained : Impact and Mitigation

A vulnerability known as Unquoted Path (SMB Login) Vulnerability has been identified in the Kiwi Syslog Server, a product by SolarWinds. This vulnerability could allow a local attacker to escalate privileges by inserting an executable into the affected service path.

Understanding CVE-2021-35231

This section will cover what CVE-2021-35231 is and its impact, along with technical details and mitigation steps.

What is CVE-2021-35231?

CVE-2021-35231 is an unquoted service path vulnerability found in the Kiwi Syslog Server Installation Wizard. Exploiting this vulnerability could enable a local attacker to gain escalated privileges through the affected service or uninstall entry.

The Impact of CVE-2021-35231

The impact of CVE-2021-35231 is considered medium with a CVSS base score of 6.7. It poses high confidentiality, integrity, and availability impacts, requiring high privileges for exploitation.

Technical Details of CVE-2021-35231

This section will provide detailed technical insights into the vulnerability, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability arises from an unquoted service path in the Kiwi Syslog Server Installation Wizard, allowing the insertion of an executable into the vulnerable path.

Affected Systems and Versions

Kiwi Syslog Server versions 9.7.2 and prior are impacted, with version 9.8 being the secure release. SolarWinds customers using affected versions are at risk.

Exploitation Mechanism

A local attacker can exploit the vulnerability by inserting a malicious executable into the unquoted service path, leading to privilege escalation.

Mitigation and Prevention

To address CVE-2021-35231, immediate steps should be taken along with long-term security practices and patching processes.

Immediate Steps to Take

Affected users are strongly advised to upgrade to Kiwi Syslog Server version 9.8 once it is available to ensure protection against the vulnerability.

Long-Term Security Practices

Implement robust security measures such as regular security updates, access control, and monitoring to prevent similar vulnerabilities.

Patching and Updates

Stay informed about security advisories and promptly apply patches and updates provided by SolarWinds to maintain the security of the Kiwi Syslog Server.