ZDI-CAN-23195: ZDI-24-1079: (0Day) (Pwn2Own) oFono CUSD Stack-based Buffer Overflow Code Execution Vulnerability
This vulnerability allows local attackers to execute arbitrary code on affected installations of oFono. An attacker must first obtain the ability to execute code on the target modem in order to exploit this vulnerability. The specific flaw exists within the parsing of responses from AT+CUSD commands. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.
Other sources
This vulnerability allows local attackers to execute arbitrary code on affected installations of oFono. An attacker must first obtain the ability to execute code on the target modem in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2024-7539.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-23195?
The severity of ZDI-CAN-23195 is critical due to the potential for local attackers to execute arbitrary code.
How do I fix ZDI-CAN-23195?
To fix ZDI-CAN-23195, apply the latest security patches provided by oFono for the affected installations.
Who is affected by ZDI-CAN-23195?
Local attackers with access to the targeted modem installations of oFono are affected by ZDI-CAN-23195.
What type of vulnerability is ZDI-CAN-23195?
ZDI-CAN-23195 is an arbitrary code execution vulnerability that arises from improper handling of responses.
What should I do if I cannot patch for ZDI-CAN-23195 immediately?
If immediate patching for ZDI-CAN-23195 is not possible, limit access to the affected systems and monitor for unusual activity.