CVE Catalog

CVE-2020-37278

HighCVSS 7.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.36%

27th percentile - higher than 27% of all known CVEs

Summary

Weaver e-Bridge contains an unauthenticated arbitrary file read vulnerability that allows remote attackers to access arbitrary files on the host system by supplying a file: URL to the downloadUrl parameter of the saveYZJFile endpoint. Attackers can read sensitive files such as /etc/passwd or configuration and credential files. The endpoint also supports http(s) URLs, enabling SSRF against internal network resources. Exploitation evidence was first observed on 2023-10-17.

Risk Assessment

The vulnerability allows unauthorized reading of sensitive files and access to internal resources, potentially leading to full system and data compromise.

Recommendation

Apply patches provided by Weaver e-Bridge vendor. Restrict access to the saveYZJFile endpoint and sanitize input parameters.

Related vulnerabilities

Original NVD description (English source)

Weaver e-Bridge contains an unauthenticated arbitrary file read vulnerability that allows remote attackers to access arbitrary files on the host system by supplying a file: URL to the downloadUrl parameter of the saveYZJFile endpoint. Attackers can exploit this flaw to read sensitive files such as /etc/passwd or configuration and credential files, and the same endpoint's support for http(s) URLs also enables server-side request forgery against internal network resources. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-17.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS