CVE-2024-7538

Publication date 6 August 2024

Last updated 16 April 2026

Ubuntu priority

Cvss 3 Severity Score

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ofono	25.10 questing	Not affected
	25.04 plucky	Ignored end of life, was needs-triage
	24.10 oracular	Ignored end of life, was needs-triage
	24.04 LTS noble	Fixed 1.31-3ubuntu3.24.04.2+esm1
	22.04 LTS jammy	Fixed 1.31-3ubuntu1.2+esm1
	20.04 LTS focal	Fixed 1.31-2ubuntu1+esm3
	18.04 LTS bionic	Fixed 1.21-1ubuntu1+esm3
	16.04 LTS xenial	Fixed 1.17.bzr6912+16.04.20160314.3-0ubuntu1+esm3

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Notes

bruce

No available patch as of 2024-12-10. Current mitigation is to restrict access with the application.

allenpthuang

Researchers at ZDI list the CVE-2024-7539 patch as a fix. Ubuntu's default compiler flags mitigate stack-based buffer overflows. Set the priority to Medium.

Severity score breakdown

Parameter	Value
Base score	7.8 · High
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-8178-1
oFono vulnerabilities
16 April 2026