CVE-2023-4235

Publication date 17 April 2024

Last updated 26 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A flaw was found in ofono, an Open Source Telephony on Linux. A stack overflow bug is triggered within the decode_deliver_report() function during the SMS decoding. It is assumed that the attack scenario is accessible from a compromised modem, a malicious base station, or just SMS. There is a bound check for this memcpy length in decode_submit(), but it was forgotten in decode_deliver_report().

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ofono	25.10 questing	Needs evaluation
	25.04 plucky	Needs evaluation
	24.10 oracular	Fixed 1.31-3ubuntu3.24.10.2
	24.04 LTS noble	Fixed 1.31-3ubuntu3.24.04.2
	23.10 mantic	Ignored end of life, was needs-triage
	22.04 LTS jammy	Fixed 1.31-3ubuntu1.2
	20.04 LTS focal	Fixed 1.31-2ubuntu1+esm2
	18.04 LTS bionic	Fixed 1.21-1ubuntu1+esm2
	16.04 LTS xenial	Fixed 1.17.bzr6912+16.04.20160314.3-0ubuntu1+esm2

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Notes

sbeattie

Fedora seems to think that this was fixed in ofono 2.5; however, while that release does seem to add some additional bounds checks, the specific function referenced has not been touched since 2010. It's not clear if or how this was fixed upstream.

Severity score breakdown

Parameter	Value
Base score	8.1 · High
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-7151-1
oFono vulnerabilities
11 December 2024