LGSL has a reflected XSS at /lgsl_files/lgsl_list.php
The advisory, in context
Reflected XSS at /lgsl_files/lgsl_list.php
Description:
Vulnerability: A reflected XSS vulnerability exists in the Referer HTTP header of LGSL v6.2.1. The vulnerability allows attackers to inject arbitrary JavaScript code, which is reflected in the HTML response without proper sanitization.
When crafted malicious input is provided in the Referer header, it is echoed back into an HTML attribute in the application’s response.
The vulnerability is present at Line 20-24
$uri = $_SERVER['REQUEST_URI'];
if ($lgsl_config['preloader']) {
$uri = $_SERVER['HTTP_REFERER'];
}
Proof of Concept:
- Capture a request to the path
/lgsl_files/lgsl_list.php. - Inject the following payload into the Referer header:
test'><script>alert(1)</script><. - Send the request.
- The XSS payload is triggered when reloading.
Impact:
Execution of Malicious Code
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 through 6.2.1 (inclusive)
No fix recorded for this interval.
10 explicitly affected versions
v5.10.0, v5.10.1, v5.10.2, v5.10.3, v6.0.0, v6.0.1, v6.1.0, v6.1.1, v6.2.0, v6.2.1
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "6.2.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"v5.10.0",
"v5.10.1",
"v5.10.2",
"v5.10.3",
"v6.0.0",
"v6.0.1",
"v6.1.0",
"v6.1.1",
"v6.2.0",
"v6.2.1"
]
}References
- https://github.com/tltneon/lgsl/security/advisories/GHSA-ggwq-xc72-33r3
- https://nvd.nist.gov/vuln/detail/CVE-2024-56517
- https://github.com/tltneon/lgsl/commit/7ecb839df9358d21f64cdbff5b2536af25a77de1
- https://github.com/tltneon/lgsl
- https://github.com/tltneon/lgsl/blob/master/lgsl_files/lgsl_list.php#L20-L24