CVE-2024-7538 oFono CUSD AT Command Stack-based Buffer Overflow Code Execution Vulnerability
Local attackers with modem access can execute arbitrary code as root via a stack-based buffer overflow in oFono's AT command parsing.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-7538?
CVE-2024-7538 is a high-severity memory corruption vulnerability in oFono, published on 5 Aug 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
oFono CUSD AT Command 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 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. Was ZDI-CAN-23190.
Which versions are affected by CVE-2024-7538?
It affects 1 product.
Products include Ofono Project Ofono.
How do I fix CVE-2024-7538?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2024-7538 being exploited?
There is no known exploitation of CVE-2024-7538 in the wild and no public exploit code.
Other vulnerabilities in oFono
- CVE-2024-7539 oFono CUSD Stack-based Buffer Overflow Code Execution Vulnerability
- CVE-2024-7543 oFono SimToolKit Heap-based Buffer Overflow Privilege Escalation Vulnerability
- CVE-2024-7544 oFono SimToolKit Heap-based Buffer Overflow Privilege Escalation Vulnerability
- CVE-2024-7545 oFono SimToolKit Heap-based Buffer Overflow Privilege Escalation Vulnerability
- CVE-2024-7546 oFono SimToolKit Heap-based Buffer Overflow Privilege Escalation Vulnerability
Sources
Also known as DEBIAN-CVE-2024-7538, GHSA-jchw-pqx7-w4qj, UBUNTU-CVE-2024-7538.