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YoctoApplication · Linuxfoundation

CVE-2023-32829

MEDIUM · 6.7 CVSS v3.1 Published 2023-10-02
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
69/100
Remediation priority · Elevated
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In apusys, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07713478; Issue ID: ALPS07713478.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

A medium-severity integer overflow vulnerability in the apusys (Application Processor Unified System) component allows a local attacker with System execution privileges to trigger an out-of-bounds write, potentially leading to local privilege escalation. The vulnerability stems from insufficient integer overflow validation in memory allocation or offset calculations within the apusys subsystem.

MitigationApply vendor patch ALPS07713478 which contains the fix for the integer overflow in apusys. As this is a firmware-level vulnerability, update the device firmware to the patched version and verify the update does not introduce regressions.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
YoctoApplication
Affected:= 3.1= 3.3= 4.0
Iot YoctoApplication
Affected:= 23.0
AndroidOperating system
Affected:= 12.0= 13.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify if the device uses MediaTek chipset with apusys subsystem
    Check system information or hardware specifications to confirm the presence of MediaTek Application Processor Unified System (apusys). This is typically found in MediaTek-based IoT devices or Android devices with MediaTek SoCs.
    Affected if The device uses a MediaTek chipset that includes the apusys subsystem and the firmware version matches the affected versions (Linuxfoundation Yocto 3.1, 3.3, 4.0; Mediatek Iot Yocto 23.0; Android 12.0, 13.0)
  2. Determine the installed apusys firmware version
    Access the device firmware or system image and locate the apusys component version. On Android, this may be found in /vendor or /system partitions. On Yocto-based systems, check the apusys package version installed in the root filesystem.
    Affected if The installed apusys firmware version cannot be determined or matches any of the affected versions listed (3.1, 3.3, 4.0 for Linuxfoundation Yocto; 23.0 for Mediatek Iot Yocto)
  3. Verify the patch ALPS07713478 is applied
    Check the apusys firmware changelog, patch level, or vendor security bulletin to confirm whether the integer overflow fix (ALPS07713478) has been incorporated into the current firmware build.
    Affected if The patch ALPS07713478 is not present or the firmware predates the patch release date, leaving the integer overflow vulnerability unmitigated
  4. Confirm current execution privileges
    Determine the privilege level of the current process or user. The vulnerability requires System execution privileges to trigger the integer overflow in memory allocation or offset calculations.
    Affected if The attacker or process is running with System-level execution privileges on a vulnerable apusys firmware version

The environment is affected if the device runs a MediaTek-based system with apusys firmware matching the affected version ranges (Linuxfoundation Yocto 3.1/3.3/4.0, Mediatek Iot Yocto 23.0, Android 12.0/13.0) and does not have the ALPS07713478 patch applied.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply vendor patch ALPS07713478 which contains the fix for the integer overflow in apusys. As this is a firmware-level vulnerability, update the device firmware to the patched version and verify the update does not introduce regressions.

Recommended fix Moderate confidence
  1. Contact MediaTek through your device vendor or directly to request the ALPS07713478 patch for the apusys integer overflow vulnerability
  2. Verify your MediaTek SoC model and confirm it is within the affected chipset families (typically MTK-based IoT/embedded platforms running the listed Yocto or Android versions)
  3. Apply the vendor-supplied patch or firmware update containing the ALPS07713478 fix through your normal OTA or system update mechanism
  4. After patching, verify the apusys driver version includes the security fix by checking system logs or driver version information

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Yocto Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-32829 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data