String.replace() of the component JavaScriptCore. Upgrading to version 10.1 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.
Intelligence View
Apple Safari up to 10.0 JavaScriptCore String.replace() cross site scripting
A vulnerability was found in Apple Safari up to 10.0 (Web Browser) and classified as critical. Affected by this issue is the function String.replace() of the component JavaScriptCore. Upgrading to version 10.1 eliminates this…
1. Sofort-Triage & Abwehrmaßnahmen
SOC Incident Playbook: Vulnerability Remediation & Verification
title: Detect Exploitation - Apple Safari up to 10.0 JavaScriptCore String.replace() cross site scripting
id: 02d9f453-91d5-4ca3-b3cd-97a52b27197f
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
- https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-25
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 = "2026-09-25"
description = "YARA Signature for "
strings:
$str = "Apple Safari up to 10.0 JavaSc" ascii wide
condition:
any of them
}index=security sourcetype IN ("cisco:asa", "pan:traffic", "zeek_conn", "suricata", "WinEventLog:Security")
("Apple Safari up to 100 JavaScriptCore St")
| stats count earliest(_time) as first_seen latest(_time) as last_seen by src_ip, dest_ip, dest_host, signature
| eval first_seen=strftime(first_seen, "%Y-%m-%d %H:%M:%S"), last_seen=strftime(last_seen, "%Y-%m-%d %H:%M:%S")
| sort - countmessage: "*Apple Safari up to 100 JavaScriptCore St*"CommonSecurityLog
| where Message has "Apple Safari up to 100 JavaScriptCore St"
| summarize EventCount = count(), FirstSeen = min(TimeGenerated), LastSeen = max(TimeGenerated) by SourceIP, DestinationIP, DestinationPort, Activity
| extend DetectionRule = "iShareStuff-CTI-Compiled"
| sort by EventCount desc2. Cyber Threat Intelligence & Forensik
MITRE ATT&CK Matrix Navigator 14 Taktiken
tsecurity.de Cognitive Threat RAG
Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich Apple Safari up to 10.0 JavaScriptCore S.... Basierend auf 368k Vektor-Korrelationen werden sofortige Isolationsmaßnahmen für betroffene Endpunkte empfohlen.
Netzwerk/Remote-Zugriff ohne Vorauthentifizierung möglich.
- 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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