CVE-2023-4679Public exploit

Crash via stale sample length after discard

Published Nov 15, 2024 · Updated Nov 15, 2024

Use-after-free in GPAC MP4Box 2.3-DEV-revrelease allows local users to crash the process via a crafted media file. During DASH conversion, isor_reader_get_sample discards ch->pck but leaves the static sample allocation and data lengths intact, so recursive sample retrieval reuses stale buffer state and cleanup frees the same allocation twice. The issue requires local MP4Box processing of attacker-controlled media, and the demonstrated consequence is an application crash.

CVSS severity5.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in GPAC MP4Box 2.3-DEV-revrelease allows local users to crash the process via a crafted media file. During DASH conversion, isor_reader_get_sample discards ch->pck but leaves the static sample allocation and data lengths intact, so recursive sample retrieval reuses stale buffer state and cleanup frees the same allocation twice. The issue requires local MP4Box processing of attacker-controlled media, and the demonstrated consequence is an application crash.

The record

CVE
CVE-2023-4679
Published
Nov 15, 2024
Updated
Nov 15, 2024
Vendor
GPAC Project
Product
GPAC
Classifications
CWE-416
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Nov 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.3-DEV
  2. Affected versionversion=unspecified <2.3-DEV

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

GPAC Project · GPACversion=0 <2.3-DEV; version=unspecified <2.3-DEV

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.9huntr.devCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
5.9CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-416Use After Free

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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