oFono 2.3 SimToolKit heap-based overflow

Summaryinfo

A vulnerability classified as critical has been found in oFono 2.3. This affects an unknown part of the component SimToolKit. The manipulation leads to heap-based overflow. This vulnerability is documented as CVE-2024-7544. The attack needs to be performed locally. There is not any exploit available.

Detailsinfo

A vulnerability was found in oFono 2.3. It has been rated as critical. This issue affects some unknown processing of the component SimToolKit. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

oFono SimToolKit Heap-based Buffer Overflow Privilege Escalation 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 STK command PDUs. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-23457.

It is possible to read the advisory at zerodayinitiative.com. The identification of this vulnerability is CVE-2024-7544 since 08/06/2024. The exploitation is known to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/18/2026).

The vulnerability scanner Nessus provides a plugin with the ID 307010 (Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : oFono vulnerabilities (USN-8178-1)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (307010). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• oFono

Version

• 2.3

CPE 2.3info

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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