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CVE-2023-4233· NVD / CVE Program· CNA fedora

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

Noroxi assessment

Priority: Monitor (action score 32/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1% (FIRST EPSS); higher than 62.6% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: ofono (Debian:13) 2.10-1; ofono (openSUSE:Leap 16.0) 2.19-bp160.1.1.

Low priority for now. Upgrade to ofono (Debian:13) 2.10-1; ofono (openSUSE:Leap 16.0) 2.19-bp160.1.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A flaw was found in ofono, an Open Source Telephony on Linux. A stack overflow bug is triggered within the sms_decode_address_field() function during the SMS PDU decoding. It is assumed that the attack scenario is accessible from a compromised modem, a malicious base station, or just SMS.

HighCVSS 8.1 · v3.1—No exploit Fix available
Published
Apr 17, 2024
Updated
Jun 17, 2026
EPSS
1.0% · 62th percentile

Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
32 / 40 · 8.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.0%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · fedora
8.1
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-4233

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
ofono projectofono
fedoraprojectfedora

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • fedoraproject fedora38
  • fedoraproject fedora39
  • fedoraproject fedora40
  • ofono project ofonobefore 2.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (fedora). Independent of NVD's CPE analysis and usually ahead of it.

  • Fedora Fedora

    • all versionsaffected

  • n/a ofono

    • 2.1not affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12ofonoall versions—
Debian:13ofonobefore 2.10-12.10-1
openSUSE:Leap 16.0ofonobefore 2.19-bp160.1.12.19-bp160.1.1

Same product

ofono project: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-4235Ofono: sms decoder stack-based buffer overflow remote code execution vulnerability within the decode_deliver_report() function
    32Monitor
  • CVE-2023-4234Ofono: sms decoder stack-based buffer overflow remote code execution vulnerability within the decode_submit_report() function
    32Monitor
  • CVE-2023-4232Ofono: sms decoder stack-based buffer overflow remote code execution vulnerability within the decode_status_report() function
    32Monitor
  • CVE-2023-2794Ofono: sms decoder stack-based buffer overflow remote code execution vulnerability within the decode_deliver() function
    32Monitor
  • CVE-2024-7547oFono SMS Decoder Stack-based Buffer Overflow Privilege Escalation Vulnerability
    31Monitor
  • CVE-2024-7546oFono SimToolKit Heap-based Buffer Overflow Privilege Escalation Vulnerability
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:ofono2.10-1 · Debian:13Package registry (OSV)
opensuse:ofono2.19-bp160.1.1 · openSUSE:Leap 16.0Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2023-42320 days apartOfono: sms decoder stack-based buffer overflow remote code execution vulnerability within the decode_status_report() function
    32Monitor
  • CVE-2023-42340 days apartOfono: sms decoder stack-based buffer overflow remote code execution vulnerability within the decode_submit_report() function
    32Monitor
  • CVE-2023-42350 days apartOfono: sms decoder stack-based buffer overflow remote code execution vulnerability within the decode_deliver_report() function
    32Monitor
  • CVE-2023-27947 days apartOfono: sms decoder stack-based buffer overflow remote code execution vulnerability within the decode_deliver() function
    32Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

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

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records