Linux provides a system call (mkdir())
to create a directory, and a few variants of
open() that can open a directory. There is, however, no
system call in Linux that can create and open a directory in a single,
race-free call. Jori Koolstra has been working on remedying that
situation, most recently by repurposing a set of open() flags that currently
return an error. There are, however, concerns that show just how hard it
can be to create user-space interfaces that do not present traps for
application developers.
Intelligence View
⚡ tsecurity.de Intelligence
[$] Reconsidering O_CREAT|O_DIRECTORY
Linux provides a system call (mkdir()) to create a directory, and a few variants of open() that can open a directory. There is, however, no system call in Linux that can create and open a directory in a single, race-free call. Jori…
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CTI Threat Relationship Graph2 Knoten / 1 Relationen
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title: Detect Exploitation - [$] Reconsidering O_CREAT|O_DIRECTORY
id: 60f536b2-6b9c-485b-87ec-b7864699dc35
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:
$str = "[$] Reconsidering O_CREAT|O_DI" ascii wide
condition:
any of them
}tsecurity.de Cognitive Threat RAG
Fokus-Vektor:
Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich [$] Reconsidering O_CREAT|O_DIRECTORY.... 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.
🔗 Semantisch verwandte Zero-Days
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