WSO2 Products Open Redirection Vulnerability Analysis and Mitigation Guide (CVE-2024-2372)
Executive & SecOps Summary
SECOPS ASSESSMENTWSO2 components, including WSO2 Identity Server and API Manager, that accept user-supplied input for constructing redirection URLs
Attackers can redirect users to arbitrary external domains, facilitating highly convincing phishing and social engineering attacks to harvest sensitive credentials
Apply the latest security patches via WSO2 Update Utility as detailed in advisory WSO2-2024-3254, and enforce strict redirection whitelist validation
Affected Products & Version Scope
Remediation & Live Workaround Commands
PATCH & WORKAROUND1. Official Patch & Version Upgrade Commands
Use the official WSO2 Update Utility to apply the latest security updates and hotfixes to your deployment.
# Navigate to the WSO2 bin directory
cd /opt/wso2/bin
# Run the update utility to apply the latest patches
./wso2update_linux2. Temporary Workaround & Hardening Configuration
If immediate patching is not feasible, configure your reverse proxy (e.g., Nginx) or Web Application Firewall (WAF) to block redirection requests containing external domains.
# Nginx configuration snippet to block unauthorized external redirects
if ($args ~* "(redirect_to|return|goto|next)=http(s)?://(?!(yourdomain\.com|internal\.local))") {
return 403 'Invalid redirection target';
}3. Log Audit & IoC Verification Commands
Run the following command to inspect WSO2 HTTP access logs for potential open redirect exploitation attempts.
# Search for 302 redirects pointing to external domains in WSO2 access logs
grep -E '302 ' /opt/wso2/repository/logs/http_access_*.log | grep -E '(http|https)://' | grep -v 'yourdomain.com'Block Exploits Instantly with Managed Virtual Patching Rules
Can't patch production immediately? Deploy managed WAF rules at the edge to intercept RCE, SQLi, and deserialization payloads before they hit your origin server.
Technical Root Cause & Exploitation Mechanics
1. Vulnerability Overview & Root Cause
This vulnerability (CVE-2024-2372) exists in certain web components of WSO2 products. The root cause is the failure to enforce expected validation constraints on user-supplied input when constructing redirection URLs. This lack of input sanitization allows an attacker to inject arbitrary external domains into the redirection parameters (CWE-601).
2. Exploitation Mechanics & Attack Scenario
An attacker crafts a malicious link pointing to a legitimate WSO2 endpoint but modifies the redirection parameter to point to an attacker-controlled external domain. When an unsuspecting user clicks this link, the WSO2 application processes the request and automatically redirects the user to the malicious external page. Because the initial domain in the link was trusted, the user is highly likely to fall victim to credential harvesting or session hijacking on the destination phishing page.
3. Infrastructure & Business Impact
Since WSO2 products often serve as central Identity and Access Management (IAM) or API Gateway solutions, an open redirect vulnerability poses a significant risk. It can be leveraged in targeted spear-phishing campaigns against employees or customers, potentially leading to compromised administrative accounts, unauthorized access to internal systems, and severe reputational damage.
Official Vendor Advisories & References
The affected components accept user-supplied input for constructing redirection URLs without enforcing expected validation constraints. This allows an attacker to provide a crafted URL that can redirect users to an arbitrary external domain. By leveraging this open redirection vulnerability, an attacker can craft a malicious link that, when clicked by a user, redirects them to an attacker-controlled page. This can be used in conjunction with social engineering techniques to execute phishing attacks, aiming to obtain sensitive information or cause other harm.
Frequently Asked SecOps Questions (CVE-2024-2372)
FAQQ1. How critical is CVE-2024-2372 and is it actively exploited in the wild?
CVE-2024-2372 is rated CVSS 5.4 (MEDIUM) with a 30-day EPSS exploitation probability of 0.2%. Organizations running affected versions should prioritize patching based on network exposure.
Q2. Which vendors and products are affected by CVE-2024-2372?
Primary impacted vendors include wso2 across identity server, api manager. Scope summary: WSO2 Identity Server, API Manager, and other components lacking proper redirection URL validation (Refer to WSO2-2024-3254 for specific version details)
Q3. What temporary mitigations or workarounds exist for CVE-2024-2372 before patching?
[Mitigation] Apply the latest security patches via WSO2 Update Utility as detailed in advisory WSO2-2024-3254, and enforce strict redirection whitelist validation Follow the CLI remediation commands and interactive SecOps checklist on this page to restrict exposure prior to your maintenance window.
Generate an Internal Engineering Notice or CISO Report for CVE-2024-2372
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