How severe is CVE-2023-4235?

CVE-2023-4235 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-4235 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4235?

CVE-2023-4235 primarily affects Ofono Project Ofono. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-4235?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2023-4235 have an EU (EUVD) identifier?

Yes. CVE-2023-4235 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-54108.

When was CVE-2023-4235 published?

CVE-2023-4235 was published on 2024-04-17 and last updated on 2026-06-17.

CVE-2023-4235

CVE-2023-4235 is a high-severity vulnerability in Ofono Project Ofono with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-54108
Weakness: CWE-119
Affected product: Ofono Project Ofono
Published: 2024-04-17
Last modified: 2026-06-17

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().

Frequently asked questions

What is CVE-2023-4235?: 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().
How severe is CVE-2023-4235?: CVE-2023-4235 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-4235 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4235?: CVE-2023-4235 primarily affects Ofono Project Ofono. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-4235?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2023-4235 have an EU (EUVD) identifier?: Yes. CVE-2023-4235 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-54108.
When was CVE-2023-4235 published?: CVE-2023-4235 was published on 2024-04-17 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ofono_project:ofono:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:*

More vulnerabilities in Ofono Project Ofono

CVE-2023-4234 — High (CVSS 8.1): A flaw was found in ofono, an Open Source Telephony on Linux. A stack overflow bug is triggered within the…
CVE-2023-4233 — High (CVSS 8.1): A flaw was found in ofono, an Open Source Telephony on Linux. A stack overflow bug is triggered within the…
CVE-2023-4232 — High (CVSS 8.1): A flaw was found in ofono, an Open Source Telephony on Linux. A stack overflow bug is triggered within the…
CVE-2023-2794 — High (CVSS 8.1): A flaw was found in ofono, an Open Source Telephony on Linux. A stack overflow bug is triggered within the…
CVE-2024-7547 — High (CVSS 7.8): oFono SMS Decoder Stack-based Buffer Overflow Privilege Escalation Vulnerability. This vulnerability allows local…
CVE-2024-7546 — High (CVSS 7.8): oFono SimToolKit Heap-based Buffer Overflow Privilege Escalation Vulnerability. This vulnerability allows local…

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