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CVE-2023-4235

Ofono buffer overflow

8.1 HIGHPublic exploitEPSS 0.94%
  1. Published17 Apr 2024

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().

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Ofono< 2.1
Fedoraproject Fedora40

Remediation

Fixed in
Ofono≥ 2.1

References

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Frequently asked

Is CVE-2023-4235 being actively exploited?

CVE-2023-4235 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.94%.

How severe is CVE-2023-4235?

CVE-2023-4235 has a CVSS 3.1 base score of 8.1, rated high. EPSS estimates a 0.94% probability of exploitation.

Which products are affected by CVE-2023-4235?

Affected products include Ofono, Fedoraproject Fedora.

How do I fix CVE-2023-4235?

Upgrade affected software to a fixed version, for example Ofono 2.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-4235 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.