Yeswiki Vulnerable to Unauthenticated Reflected Cross-site Scripting
The advisory, in context
Summary
Vulnerable Version: Yeswiki < v4.5.4
Category: Injection
CWE: 79: Improper Neutralization of Input During Web Page Generation (CWE-79)
CVSS: 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
Vulnerable Endpoint: /?BazaR
Vulnerable Parameter: idformulaire
Payload: <script>alert(1)</script>
Details
Reflected Cross-Site Scripting (XSS) attacks are a type of injection, in which malicious scripts are injected into otherwise benign and trusted websites. XSS attacks occur when an attacker uses a web application to send malicious code, generally in the form of a browser-side script, to a different end user. Flaws that allow these attacks to succeed are quite widespread and occur anywhere a web application uses input from a user within the output it generates without validating or encoding it.
PoC
- Visit the endpoint as mentioned below and see that an alert box pops up:
URL with Payload:
https://yeswiki.net/?BazaR&vue=formulaire&action=confirm_delete&idformulaire=%3cscript%3ealert(1)%3c%2fscript%3e
Impact
An attacker can use a reflected cross-site scripting attack to steal cookies from an authenticated user by having them click on a malicious link. Stolen cookies allow the attacker to take over the user’s session. This vulnerability may also allow attackers to deface the website or embed malicious content.
Affected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
Earlier releases before 4.5.4
Fixed in 4.5.4
23 explicitly affected versions
4.2.3, v4.1.0, v4.1.1, v4.1.2, v4.1.3, v4.1.4, v4.1.5, v4.2.0, v4.2.1, v4.2.2, v4.2.4, v4.3, v4.3.1, v4.4.0, v4.4.1, v4.4.2, v4.4.3, v4.4.4, v4.4.5, v4.5.0, v4.5.1, v4.5.2, v4.5.3
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.5.4"
}
],
"type": "ECOSYSTEM"
}
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"versions": [
"4.2.3",
"v4.1.0",
"v4.1.1",
"v4.1.2",
"v4.1.3",
"v4.1.4",
"v4.1.5",
"v4.2.0",
"v4.2.1",
"v4.2.2",
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"v4.3",
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"v4.4.0",
"v4.4.1",
"v4.4.2",
"v4.4.3",
"v4.4.4",
"v4.4.5",
"v4.5.0",
"v4.5.1",
"v4.5.2",
"v4.5.3"
]
}