Yonyou KSOA 9.0 Unauthenticated File Upload RCE via ImageUpload Servlet
70Vexday Risk Score
Prioritize patching. It exploitation observed by VulnCheck and has a public proof of concept.
ssvc Actcvss 9.3epss 0.9%
from disclosure to weapon
Published on NVDJul 2
VulnCheckJul 2
exploitation probability
0.9%top 45% of all CVEs
observed exploitation
yesVulnCheck
3 public exploit(s)
Yonyou KSOA 9.0 contains an unauthenticated arbitrary file upload vulnerability in the com.sksoft.bill.ImageUpload servlet that allows unauthenticated attackers to upload arbitrary files by submitting a POST request with attacker-controlled filepath and filename parameters without any authentication, file type, extension, or content validation. Attackers can upload a JSP webshell by specifying a malicious filename and root filepath, with the uploaded file stored under the pictures directory and directly executed by the web server, resulting in unauthenticated remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-11-07 (UTC).
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
Yonyou Network Technology Co., Ltd. · KSOApublic PoCs found — 3
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