CVE-2022-2647 in jeecg-boot
Summary
by MITRE • 08/04/2022
A vulnerability was found in jeecg-boot. It has been declared as critical. This vulnerability affects unknown code of the file /api/. The manipulation of the argument file leads to unrestricted upload. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. VDB-205594 is the identifier assigned to this vulnerability.
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Analysis
by VulDB Data Team • 08/30/2022
The vulnerability identified as CVE-2022-2647 represents a critical security flaw within the jeecg-boot application framework that has been actively exploited in the wild. This vulnerability resides in the /api/ file component of the software and specifically targets the file upload functionality through improper input validation. The issue stems from insufficient restrictions on file upload operations, allowing malicious actors to bypass security controls and upload arbitrary files to the server. The vulnerability has been assigned the VDB-205594 identifier and represents a significant risk to organizations utilizing this framework.
The technical exploitation of this vulnerability occurs through manipulation of the file argument parameter within the api endpoint, which creates an unrestricted upload condition. This flaw falls under the CWE-434 category of Unrestricted Upload of File with Dangerous Type, where the application accepts file uploads without proper validation of file types, extensions, or content. Attackers can leverage this weakness to upload malicious files such as web shells, scripts, or executable binaries that can be executed on the target server. The remote attack vector means that threat actors do not require physical access to the system and can exploit this vulnerability from any location with network connectivity to the affected application.
The operational impact of this vulnerability extends beyond simple unauthorized file uploads, as it can lead to complete system compromise and persistent access for attackers. Once a malicious file is successfully uploaded, it can be executed to establish reverse shells, create backdoors, or perform further reconnaissance and lateral movement within the network. This vulnerability directly aligns with several tactics described in the MITRE ATT&CK framework, particularly those related to Initial Access through Web Shell deployment and Persistence mechanisms. Organizations running affected jeecg-boot applications face immediate risk of data breaches, system compromise, and potential regulatory compliance violations.
Mitigation strategies for CVE-2022-2647 should include immediate patching of the jeecg-boot framework to address the unrestricted upload vulnerability. Security teams must implement comprehensive file validation mechanisms that restrict file types, scan uploads for malicious content, and enforce strict access controls on upload directories. Network-level protections such as web application firewalls should be configured to monitor and block suspicious upload attempts. Additionally, organizations should conduct thorough security assessments of their applications to identify similar vulnerabilities in other components and establish proper monitoring procedures to detect unauthorized file uploads. Regular security updates and vulnerability scanning should be implemented as ongoing practices to maintain protection against similar threats.