A vulnerability classified as critical was found in Hancom Office. Affected by this vulnerability is an unknown functionality of the component XLS File Parser. The manipulation leads to stack-based buffer overflow.
This vulnerability is known as CVE-2023-50234. The attack can be launched remotely. There is no exploit available.
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CVE-2023-50234 | Hancom Office XLS File Parser stack-based overflow (ZDI-23-1856)
A vulnerability classified as critical was found in Hancom Office. Affected by this vulnerability is an unknown functionality of the component XLS File Parser. The manipulation leads to stack-based buffer overflow. This vulnerability is…
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IoC Intelligence (1 Indikatoren)
CVE-2023-50234
CTI Threat Relationship Graph2 Knoten / 1 Relationen
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title: Detect Exploitation - CVE-2023-50234 | Hancom Office XLS File Parser stack-based overflow (ZDI-23-1856)
id: ece050b6-8142-44d0-a7dd-f6672196ec80
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
- https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-24
logsource:
category: network_connection
product: any
detection:
selection:
CommandLine|contains:
- 'exploit'
condition: selection
falsepositives:
- Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
- attack.initial_accessrule CTI_Threat_Indicator {
meta:
author = "iShareStuff CTI Automated Detection Engine"
date = "2026-09-24"
description = "YARA Signature for "
strings:
$str = "CVE-2023-50234 | Hancom Office" ascii wide
condition:
any of them
}INFRASTRUCTURE BLAST RADIUS & EXPOSURE
Live-Vektor: LOCAL
LOCALIZED
Perimeter & Ingress
Geringes Risiko
Lateral Pivot & AD
GEFÄHRDET (80%)
Crown Jewels & DB
Geringes Risiko
Supply Chain Reach
Geringes Risiko
tsecurity.de Cognitive Threat RAG
Fokus-Vektor:
Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich CVE-2023-50234 | Hancom Office XLS File .... Basierend auf 368k Vektor-Korrelationen werden sofortige Isolationsmaßnahmen für betroffene Endpunkte empfohlen.
🛡️ Angriffsfläche & Exposure
Netzwerk/Remote-Zugriff ohne Vorauthentifizierung möglich.
⚡ Empfohlene Sofortmaßnahmen
- 1. Perimeter-Inspektion: Relevante Portfreigaben und exponierte Endpunkte unverzüglich scannen.
- 2. Patch-Applikation: Hersteller-Hotfix einspielen oder betroffene Daemons in isolierte DMZ-Segmente überführen.
- 3. Telemetrie & EDR-Alerts: Prozessaufrufe und Child-Processes auf anomale Shell-Spawns überwachen.
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