Weaver E-Bridge Arbitrary File Read Scanner

Weaver E-Bridge is a platform extensively used by enterprises for office automation, aiming to enhance communication and efficiency within organizations. It is primarily utilized in environments that require coordinated activities across different departments, allowing for streamlined processes. The software aids in managing documents, schedules, and workflows, providing a robust solution for enterprise-level project management. Widely employed by medium to large enterprises, Weaver E-Bridge integrates various office tasks into a cohesive system. Besides improving operational efficiency, it also supports collaboration and information sharing among team members. The software is valued for its ability to centralize and simplify complex business processes.

The vulnerability found in Weaver E-Bridge is a local file read vulnerability. This security flaw allows unauthorized reading of files from the server where the software is installed. Such vulnerabilities typically occur due to improper input validation or control over file paths. Exploiting this vulnerability could lead to unauthorized disclosure of sensitive information stored on the server. The exposure is particularly critical in environments where sensitive documents and data are processed and stored. This vulnerability, if leveraged by an attacker, can lead to significant security breaches, making it crucial to identify and mitigate such risks promptly.

Technically, this local file read vulnerability manifests in the Weaver E-Bridge saveYZJFile interface. The exploit allows attackers to perform unsanctioned file access by manipulating the file path and parameters in the system. Specific endpoints such as /wxjsapi/saveYZJFile and /file/fileNoLogin are vulnerable and can be employed for this exploit. The vulnerability is exacerbated by improper validation of file paths, enabling attackers to fetch files from critical directories. The presence of specific strings in HTTP responses, such as 'Program Files' or user entries from /etc/passwd, confirms successful exploitation. The underlying issue arises from the system’s failure to adequately sanitize input paths, reflecting a gap in security protocols.

When exploited, local file read vulnerabilities can have severe repercussions, such as unauthorized access to confidential files containing sensitive business or personal data. In enterprise settings, this could lead to leakage of critical business information, compromising trade secrets and proprietary information. Beyond data breaches, there could also be regulatory repercussions if client data is exposed, leading to reputational damage and potential legal liabilities. Additionally, it could provide attackers with more information to launch further sophisticated attacks on the network. Therefore, the vulnerability poses a considerable risk, necessitating robust and timely remediation efforts to mitigate potential impacts.

REFERENCES

• https://peiqi.wgpsec.org/wiki/oa/%E6%B3%9B%E5%BE%AEOA/%E6%B3%9B%E5%BE%AEOA%20E-Bridge%20saveYZJFile%20%E4%BB%BB%E6%84%8F%E6%96%87%E4%BB%B6%E8%AF%BB%E5%8F%96%E6%BC%8F%E6%B4%9E.html