CVE-2021-24371 RSVPMaker < 8.7.3 - Authenticated (admin+) SSRF

Low 2.7 Published Updated

Authenticated administrators can exploit an SSRF vulnerability in the RSVPMaker plugin to scan internal networks via unvalidated URL inputs.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2021-24371?

CVE-2021-24371 is a low-severity server-side request forgery vulnerability in Unknown RSVPMaker, published on 2 Aug 2021. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

The Import feature of the RSVPMaker WordPress plugin before 8.7.3 (/wp-admin/tools.php?page=rsvpmaker_export_screen) takes an URL input and calls curl on it, without first validating it to ensure it's a remote one. As a result, a high privilege user could use that feature to scan the internal network via a SSRF attack.

Weakness: CWE-918

Which versions are affected by CVE-2021-24371?

It affects 1 product.

Products include Carrcommunications Rsvpmaker.

How do I fix CVE-2021-24371?

No fix has been published for CVE-2021-24371 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2021-24371 being exploited?

There is no known exploitation of CVE-2021-24371 in the wild and no public exploit code.

Sources

Also known as GHSA-hjpv-ppp8-7v6j.

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