CVE-2021-27616 in Business One Hana Chef Cookbook
Summary
by MITRE • 05/11/2021
Under certain conditions, SAP Business One Hana Chef Cookbook, versions - 8.82, 9.0, 9.1, 9.2, 9.3, 10.0, used to install SAP Business One for SAP HANA, allows an attacker to exploit an insecure temporary backup path and to access information which would otherwise be restricted, resulting in Information Disclosure vulnerability highly impacting the confidentiality, integrity and availability of the application.
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Analysis
by VulDB Data Team • 05/15/2021
The vulnerability identified as CVE-2021-27616 affects the SAP Business One Hana Chef Cookbook, a critical component used for deploying and managing SAP Business One applications on SAP HANA platforms. This issue manifests in versions 8.82 through 10.0, representing a significant security gap that impacts the overall security posture of organizations relying on SAP Business One implementations. The vulnerability stems from improper handling of temporary backup files during the installation process, creating a pathway for unauthorized information disclosure that compromises the fundamental security principles of confidentiality, integrity, and availability.
The technical flaw resides in the insecure temporary backup path mechanism within the Chef cookbook implementation. When the installation process executes, it creates temporary backup files in predictable locations that lack proper access controls or security restrictions. This insecure temporary file handling represents a direct violation of security best practices and aligns with CWE-377, which addresses insecure temporary file creation. Attackers can exploit this weakness by leveraging the predictable file paths to access sensitive backup data that should remain restricted to authorized personnel only, potentially exposing database credentials, configuration details, or other sensitive operational information.
The operational impact of this vulnerability extends beyond simple information disclosure, as it fundamentally undermines the security architecture of SAP Business One deployments. Organizations using affected versions face potential data breaches that could expose critical business information, including customer data, financial records, and operational configurations. The confidentiality impact is particularly severe since the vulnerability allows attackers to access information that should remain protected within the system's restricted areas. Additionally, the integrity and availability aspects are compromised as unauthorized access to backup files could enable attackers to modify system configurations or disrupt normal operations through manipulation of backup data.
Mitigation strategies for CVE-2021-27616 should prioritize immediate patching of affected SAP Business One Hana Chef Cookbook versions to address the insecure temporary backup path issue. Organizations must also implement restrictive file system permissions on temporary directories and establish monitoring protocols to detect unauthorized access attempts to backup files. Security teams should conduct comprehensive assessments of their SAP Business One implementations to identify any other instances of insecure temporary file handling within their deployment configurations. The vulnerability demonstrates the importance of adhering to secure coding practices and proper temporary file management as outlined in industry standards, with implications for broader security frameworks including ATT&CK technique T1078 for valid accounts and T1566 for credential access through system exploitation. Organizations should also consider implementing network segmentation and access control measures to limit potential attack vectors and reduce the overall risk exposure associated with this information disclosure vulnerability.