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POC EXPLOITS RELEASED FOR CRITICAL BUGS IN POPULAR WORDPRESS PLUGINS
By
BILL TOULAS
* January 13, 2023
* 04:28 PM
* 0
Three popular WordPress plugins with tens of thousands of active installations
are vulnerable to high-severity or critical SQL injection vulnerabilities, with
proof-of-concept exploits now publicly available.
SQL injection is a website security flaw that allows attackers to input data
into form fields or via URLs that modify legitimate database queries to return
different data or modify a database.
Depending on the website code being vulnerable to a SQL injection flaw, an
attacker could modify or delete data to a site, inject malicious scripts, or
gain full access to the website.
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PROOF OF CONCEPT EXPLOITS RELEASED
The three vulnerable plugins were discovered by Tenable security researcher
Joshua Martinelle, who reported them responsibly to WordPress on December 19,
2022, along with proofs of concept (PoCs).
The authors of the plugins released security updates to address the issues in
the following days or weeks, so all problems have been fixed now, and those
running the latest available version are no longer vulnerable.
Yesterday, the researcher disclosed technical details about each vulnerability
with proof of concept exploits using the SLEEP function to demonstrate how the
flaws work.
The first plugin that was found to be vulnerable to SQL injection is 'Paid
Memberships Pro,' a membership and subscriptions management tool used in over
100,000 websites.
"The plugin does not escape the 'code' parameter in the /pmpro/v1/order REST
route before using it in a SQL statement, leading to an unauthenticated SQL
injection vulnerability," reveals Tenable's post.
The flaw is tracked as CVE-2023-23488, receiving a CVSSv3 severity rating of 9.8
(critical), and it affects all versions of the plugin older than 2.9.8. Paid
Memberships Pro fixed the vulnerability on December 27, 2022, with the release
of version 2.9.8.
Provided example of a test attack leveraging CVE-2023-23488 (Tenable)
The second WordPress add-on vulnerable to SQL injection is 'Easy Digital
Downloads,' an e-commerce solution for selling digital files with over 50,000
active installations.
"The plugin does not escape the 's' parameter in the 'edd_download_search'
action before using it in a SQL statement, leading to an unauthenticated SQL
injection vulnerability," explains Tenable.
"The vulnerable part of the code corresponds to the 'edd_ajax_download_search()'
function of the './includes/ajax-functions.php' file."
The vulnerability is tracked as CVE-2023-23489 and has received a CVSSv3
severity rating of 9.8, categorizing it as critical. The flaw impacts all
versions below 3.1.0.4, released on January 5, 2023.
Finally, Tenable discovered CVE-2023-23490, a 'high-severity' SQL injection flaw
in 'Survey Marker,' a WordPress plugin used by 3,000 websites for surveys and
market research.
The flaw received a severity rating of 8.8, according to the CVSS v3, because
the attacker has to be authenticated as at least a subscriber to exploit it.
However, this prerequisite is usually easy to fulfill, as many websites allow
visitors to register as members.
Survey Marker was the quickest vendor to respond to Tenable's SQL injection
discovery, releasing a fixing update on December 21, 2022, with version 3.1.2.
While all of these plugins were vulnerable to SQL injection, and proof of
concept exploits were released, Tenable did not share what impact they could
lead if exploited in attacks.
However, as the bugs are categorized as critical, it is recommended that all
sites using these plugins upgrade to the latest version.
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Researchers to release PoC exploit for critical ManageEngine RCE bug, patch now
Git patches two critical remote code execution security flaws
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BILL TOULAS
Bill Toulas is a technology writer and infosec news reporter with over a decade
of experience working on various online publications. An open source advocate
and Linux enthusiast, is currently finding pleasure in following hacks, malware
campaigns, and data breach incidents, as well as by exploring the intricate ways
through which tech is swiftly transforming our lives.
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