CVE-2023-54403
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk38th percentile - higher than 38% of all known CVEs
Summary
Yonyou U8 CRM before V16.5 and V18 contains an arbitrary file read vulnerability in /ajax/getemaildata.php that allows unauthenticated attackers to bypass authentication using the DontCheckLogin=1 parameter and read arbitrary files via an unvalidated filePath parameter. Attackers can exploit this flaw to read sensitive files outside the web application directory, including configuration files containing database or service credentials. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14.
Risk Assessment
An unauthenticated attacker could read configuration files containing credentials, potentially leading to unauthorized access to databases and other services.
Recommendation
Update Yonyou U8 CRM to version V16.5 or V18 (or later) and verify that the /ajax/getemaildata.php endpoint is not publicly accessible.
Other vulnerabilities in Yonyou U8 CRM
Original NVD description (English source)
Yonyou U8 CRM before V16.5 and V18 contains an arbitrary file read vulnerability in /ajax/getemaildata.php that allows unauthenticated attackers to bypass authentication using the DontCheckLogin=1 parameter and read arbitrary files via an unvalidated filePath parameter. Attackers can exploit this flaw to read sensitive files outside the web application directory, including configuration files containing database or service credentials. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS