CVE-2023-38501

MEDIUM6.3EPSS 79.6%

copyparty vulnerable to reflected cross-site scripting via k304 parameter

發布日:2023/7/25修改日:2025/9/4

描述

### Summary The application contains a reflected cross-site scripting via URL-parameter `?k304=...` and `?setck=...` ### Details A reflected cross-site scripting (XSS) vulnerability exists in the web interface of the application that could allow an attacker to execute malicious javascript code by tricking users into accessing a malicious link. The worst-case outcome of this is being able to move or delete existing files on the server, or upload new files, using the account of the person who clicks the malicious link. It is recommended to change the passwords of your copyparty accounts, unless you have inspected your logs and found no trace of attacks. ### Checking for exposure if copyparty is running behind a reverse proxy, you can check the access-logs for traces of attacks, by grepping for URLs containing `?hc=` with `<` somewhere in its value, for example using the following command: * nginx: ```bash (gzip -dc access.log*.gz; cat access.log) | sed -r 's/" [0-9]+ .*//' | grep -iE '%0[da]%0[da]%0[da]%0[da]|[?&](hc|pw)=.*[<>]' ``` the above commands also check for attacks against GHSA-cw7j-v52w-fp5r ### PoC `https://localhost:3923/?k304=y%0D%0A%0D%0A%3Cimg+src%3Dcopyparty+onerror%3Dalert(1)%3E`

受影響套件(2)

CVSS 分數

來源版本嚴重程度向量
osvCVSS 4.0—CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
osvCVSS 3.1MEDIUM6.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

參考連結(7)