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CVE Record

CVE-2020-23931: An issue was discovered in gpac before 1.0.1.

An issue was discovered in gpac before 1.0.1. The abst_box_read function in box_code_adobe.c has a heap-based buffer over-read.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2020-23931 is a GPAC memory-safety bug in versions before 1.0.1. A malformed input reaching the affected Adobe box parsing function could make GPAC read past heap buffer boundaries. The public record does not provide a CVSS score, active exploitation evidence, or detailed business impact.

Executive priority

Treat this as a targeted hygiene update, not an emergency, unless GPAC is used on internet-facing or user-upload media paths. Prioritize exposed media-processing services first because the public severity and exploitation evidence are incomplete.

Technical view

The issue is a heap-based buffer over-read in abst_box_read in box_code_adobe.c. The CVE record describes affected GPAC as before 1.0.1, with GitHub issues and a commit referenced. CWE-126 context indicates over-reads may expose memory or cause crashes, but this CVE’s specific impact is not fully documented.

Likely exposure

Exposure is most likely where GPAC versions before 1.0.1 process untrusted or externally supplied media or container data. The source bundle does not identify packaged products, CPEs, cloud services, or downstream vendors.

Exploitation context

The CVE is not listed as KEV in the provided bundle. Public GitHub issues and a commit exist, but the sources provided do not claim active exploitation, public weaponization, or exploitation in the wild.

Researcher notes

Focus on version confirmation, reachability of abst_box_read, and whether untrusted data reaches GPAC. Avoid assuming downstream product impact without SBOM, package, or application evidence. The public record lacks CVSS, CPEs, and confirmed exploit activity.

Mitigation direction

  • Inventory GPAC usage and identify versions older than 1.0.1.
  • Upgrade GPAC to 1.0.1 or later where vendor guidance supports it.
  • Review the referenced GPAC commit and release notes for fix applicability.
  • Limit processing of untrusted media until affected deployments are updated.
  • Monitor vendor and distribution advisories for backported fixes.

Validation and detection

  • Check deployed GPAC package or library versions against the pre-1.0.1 affected range.
  • Confirm whether applications route untrusted inputs into GPAC parsing.
  • Verify patched builds include the referenced upstream commit or equivalent backport.
  • Run regression tests for media-processing workflows after updating GPAC.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2020-23931 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.