oFono 1.34 CUSD stack-based overflow

Summaryinfo

A vulnerability was found in oFono 1.34. It has been classified as critical. Impacted is an unknown function of the component CUSD Handler. Performing a manipulation results in stack-based overflow. This vulnerability was named CVE-2024-7539. The attack needs to be approached locally. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in oFono 1.34. This affects an unknown code block of the component CUSD Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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. Was ZDI-CAN-23195.

It is possible to read the advisory at zerodayinitiative.com. This vulnerability is uniquely identified as CVE-2024-7539 since 08/06/2024. The exploitability is told 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 04/17/2026).

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

• 1.34

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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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