Horizon Alert
Summary of the vulnerability and why it matters
The SIMalliance Toolbox Browser (S@T Browser) on the UICC is vulnerable. This flaw allows remote attackers to retrieve sensitive device information and execute commands. The impact can include unauthorized access to location and IMEI data, potentially leading to further compromise of business systems and data.
- Vulnerable SIM Browser
- Command execution via SMS
- Data retrieval and system access
Attack Path
How an attacker could exploit the issue
The SIMalliance Toolbox Browser, residing on the UICC, processes SIM Toolkit instructions. This functionality can be exploited by attackers to gain unauthorized access to sensitive data and execute commands. The vulnerability lies in the processing of these instructions, which can be manipulated to perform malicious actions.
- Exposure condition: Network access to the SIM card.
- Attacker starting point: Remote attacker.
- Trigger and result: Malicious SMS commands lead to data retrieval or command execution.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability could allow attackers to compromise sensitive data and device functionality without requiring special privileges. Attackers could send specially crafted SMS messages to affected devices, potentially leading to the retrieval of location and IMEI information. Further exploitation could enable the execution of commands, impacting business operations and data privacy. The critical nature of this vulnerability suggests that organizations should prioritize remediation efforts to mitigate associated risks.
- Attackers with low skill.
- No access or conditions required.
- High business risk, treat as urgent.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability could allow attackers to retrieve sensitive device information or execute commands. Organizations should take immediate steps to identify affected systems and mitigate potential risks. The S@T Browser, found on UICCs, processes SMS messages and could be exploited to gain access to device location, IMEI, and other data.
- Find affected assets.
- Reduce exposure or isolate risk.
- Fix, verify, and monitor.
