CVE-2024-47923: Mashov Information Disclosure Vulnerability

CVE-2024-47923 Overview

CVE-2024-47923 is an information disclosure vulnerability affecting Mashov, an Israeli educational platform. The flaw is classified under [CWE-200]: Exposure of Sensitive Information to an Unauthorized Actor. An unauthenticated remote attacker can retrieve sensitive information over the network without user interaction. The Israeli Government CVE advisory program tracks and coordinates disclosure for this issue.

Critical Impact
Unauthenticated network-based attackers can obtain sensitive information from the Mashov application without any user interaction or elevated privileges.

Affected Products

Mashov application (specific affected versions not enumerated in NVD)
Vendor-provided endpoints exposing user-scoped data
Refer to the Israeli Government CVE Advisories for scope details

Discovery Timeline

2024-12-30 - CVE-2024-47923 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-47923

Vulnerability Analysis

The vulnerability exposes sensitive information to actors that are not authorized to access it. Under [CWE-200], an application places data into a location or response accessible to a party outside its intended trust boundary. In Mashov, this exposure occurs over the network and requires no authentication or user interaction.

The confidentiality impact is limited in scope, while integrity and availability remain unaffected. Attackers cannot modify records or disrupt service through this flaw alone. However, disclosed data may enable follow-on attacks such as account enumeration, credential targeting, or social engineering against users of the platform.

The EPSS probability is 0.396%, indicating a low modeled likelihood of exploitation activity in the near term.

Root Cause

The root cause is improper access enforcement on a resource or response that returns sensitive data. Common patterns for [CWE-200] include missing authorization checks on API endpoints, verbose error responses, insecure direct object references, and metadata fields returned to unauthenticated callers. The advisory does not specify the exact code path, but the network-based, unauthenticated nature of the flaw indicates a server-side response that discloses more than intended.

Attack Vector

An attacker interacts with the vulnerable Mashov endpoint over the network. The attacker sends a crafted or ordinary HTTP request and receives a response containing information that should be restricted. No credentials, tokens, or user interaction are required. Because the flaw is exploitable without prerequisites, automated scanners and opportunistic attackers can enumerate exposed data at scale.

No public proof-of-concept or exploit code is currently listed for CVE-2024-47923, and it is not present in the CISA Known Exploited Vulnerabilities catalog.

Detection Methods for CVE-2024-47923

Indicators of Compromise

Unusually high volumes of GET requests to Mashov API endpoints from a single source IP or ASN.
Sequential or enumerated request patterns targeting user identifiers, record IDs, or query parameters.
Outbound responses from Mashov endpoints containing personally identifiable information (PII) to unauthenticated sessions.

Detection Strategies

Review web server and application logs for requests to sensitive endpoints that succeed without valid session cookies or authorization headers.
Alert on response size anomalies or content-type mismatches suggesting bulk data returned to anonymous callers.
Deploy web application firewall (WAF) rules that flag suspicious enumeration patterns and rate-limit anonymous access to data endpoints.

Monitoring Recommendations

Enable verbose access logging on Mashov-facing web servers and forward logs to a central SIEM for correlation.
Monitor for spikes in 200-OK responses from endpoints that normally require authentication.
Track user account activity for signs of downstream account takeover or phishing that leverages disclosed information.

How to Mitigate CVE-2024-47923

Immediate Actions Required

Contact the Mashov vendor to confirm affected versions and obtain the patched release.
Restrict network exposure of Mashov administrative and API endpoints to trusted networks where feasible.
Enable rate limiting and anomaly detection on public-facing Mashov endpoints to reduce enumeration risk.

Patch Information

The NVD entry does not list a specific vendor patch reference. Administrators should consult the Israeli Government CVE Advisories portal and coordinate directly with the Mashov vendor for remediation guidance and fixed builds.

Workarounds

Place the Mashov application behind a WAF configured to enforce authentication on sensitive routes and block anonymous data queries.
Apply strict authorization checks at the reverse proxy layer for endpoints known to return user data.
Notify users of the disclosure risk and monitor for phishing campaigns that reference platform-specific information.

bash

# Example WAF rate-limit rule (nginx) to slow enumeration against sensitive endpoints
limit_req_zone $binary_remote_addr zone=mashov_api:10m rate=10r/m;

server {
    location /api/ {
        limit_req zone=mashov_api burst=5 nodelay;
        # Require Authorization header; deny anonymous access
        if ($http_authorization = "") { return 401; }
        proxy_pass http://mashov_backend;
    }
}