Strategic Overview
- Status
- Patched in 3.12.3
- Affected Plugin
- Amazon Affiliate
- Affected Version
<= 3.12.2- CVSS
- 9.8Critical
- Weakness type
- CWE-98 · Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
- CVE
CVE-2022-4794
At a glance
CVE-2022-4794 is a critical-severity Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in the Amazon Affiliate WordPress plugin, affecting versions <= 3.12.2. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 3.12.3; sites on affected versions should update now. Disclosed January 2023, reported by Daniel Ruf.
Vulnerability Overview
The Amazon Affiliate plugin for WordPress is vulnerable to Reflected File Download via image proxy in versions up to, and including, 3.12.2. This makes it possible for unauthenticated attackers to abuse trusted domains to load malicious files from external sources.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.
CWE-98: Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
Reaching this weakness in Amazon Affiliate <= 3.12.2 takes a caller who can reach the endpoint. PHP file inclusion means a path used by include or require is built from request data, so the file that gets executed is under the caller's influence.
Including an attacker-influenced file executes its contents, which is why this class is routinely chained with an upload or log-poisoning step to reach code execution. For Amazon Affiliate the fix is 3.12.3: builds <= 3.12.2 are affected, anything from 3.12.3 onward is not.
Remediation
Update to version 3.12.3, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Amazon Affiliate: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: Amazon Affiliate 3.12.3 closes this, and updating the plugin is the step that ends it.
- Firewall
- Scanner
- Alerts
External References
Related records
Other vulnerabilities in Amazon Affiliate
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