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Fencer Vulns
high 8.1

CVE-2023-4235 json

Ofono: sms decoder stack-based buffer overflow remote code execution vulnerability within the decode_deliver_report() function

published 2024-04-17 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-54108

cvss
8.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

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().

Patch / fix

  • ofono_project ofono 2.1
  • ofono Debian 14, Debian 13 2.14-1

debian advisories DEBIAN-CVE-2023-4235

  • ofono Ubuntu 22.04 LTS 1.31-3ubuntu1.2
  • ofono Ubuntu 24.04 LTS 1.31-3ubuntu3.24.04.2
  • ofono Ubuntu Pro 16.04 LTS 1.17.bzr6912+16.04.20160314.3-0ubuntu1+esm2
  • ofono Ubuntu Pro 18.04 LTS 1.21-1ubuntu1+esm2
  • ofono Ubuntu Pro 20.04 LTS 1.31-2ubuntu1+esm2

ubuntu advisories UBUNTU-CVE-2023-4235

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ofono openSUSE Leap 16.0 2.19-bp160.1.1

opensuse advisories openSUSE-SU-2026:21154-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-4235 updated cvss 8.1

ofono: SMS Decoder Stack-based Buffer Overflow Remote Code Execution Vulnerability within the decode_deliver_report() function

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.94% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2255402 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • n/a ofono
  • Fedora Fedora

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.