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F5 BIG-IP up to 11.5.6/11.6.3.2/12.1.3.5/13.1.0.7/14.0.0.2 SSL Virtual Server Restart denial of service
A vulnerability has been found in F5 BIG-IP up to 11.5.6/11.6.3.2/12.1.3.5/13.1.0.7/14.0.0.2 (Firewall Software) and classified as problematic. Affected by this vulnerability is an unknown code block of the component SSL Virtual Server.…
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A vulnerability has been found in F5 BIG-IP up to 11.5.6/11.6.3.2/12.1.3.5/13.1.0.7/14.0.0.2 (Firewall Software) and classified as problematic. Affected by this vulnerability is an unknown code block of the component SSL Virtual Server. Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.
IoC Intelligence (4 Indikatoren)
11[.]6[.]3[.]212[.]1[.]3[.]513[.]1[.]0[.]714[.]0[.]0[.]2
CTI Threat Relationship Graph5 Knoten / 4 Relationen
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title: Detect Exploitation - F5 BIG-IP up to 11.5.6/11.6.3.2/12.1.3.5/13.1.0.7/14.0.0.2 SSL Virtual Server Restart denial of service
id: 175821ab-bc1f-4f72-87ba-321de85beec5
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:
DestinationIp:
- '11.6.3.2'
- '12.1.3.5'
- '13.1.0.7'
- '14.0.0.2'
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 = "F5 BIG-IP up to 11.5.6/11.6.3." ascii wide
condition:
any of them
}tsecurity.de Cognitive Threat RAG
Fokus-Vektor:
Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich F5 BIG-IP up to 11.5.6/11.6.3.2/12.1.3.5.... 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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