Security readout for executives and security teams
Plain-English summary
CVE-2021-36584 is a GPAC 1.0.1 memory-safety flaw that can crash processing when MP4Box exercises vulnerable RTP/3GPP timed-text handling. The documented impact is denial of service, not data theft or remote code execution. Business urgency depends on whether GPAC or MP4Box processes untrusted media in production workflows.
Executive priority
Treat as a targeted availability risk for media-processing environments. Prioritize remediation where GPAC handles customer-supplied or partner-supplied media automatically.
Technical view
The source describes a heap-based buffer overflow in gp_rtp_builder_do_tx3g within ietf/rtp_pck_3gpp.c in GPAC 1.0.1, demonstrated through MP4Box. Published impact is denial of service. No CVSS, CWE, fixed version, or exploitation evidence is provided in the bundle.
Likely exposure
Exposure is most likely in media-processing systems, CI jobs, upload pipelines, or services using GPAC 1.0.1 or MP4Box on untrusted media files.
Exploitation context
The bundle does not show active exploitation, and CISA KEV is false. Public evidence only supports a crash/DoS condition demonstrated with MP4Box.
Researcher notes
Evidence is sparse: the CVE description identifies the vulnerable function and denial-of-service impact, but provides no CVSS, CWE, fixed version, or confirmed exploit activity. Avoid broad claims beyond GPAC 1.0.1 and MP4Box-demonstrated behavior.
Mitigation direction
- Inventory GPAC and MP4Box deployments, including embedded media-processing pipelines.
- Check GPAC issue 1842 and vendor release notes for fixed versions.
- Avoid processing untrusted media with GPAC 1.0.1 until remediated.
- Run media processing in constrained, non-privileged isolation.
- Monitor for recurring GPAC or MP4Box crashes during media ingestion.
Validation and detection
- Confirm whether installed GPAC or MP4Box versions include GPAC 1.0.1.
- Review workflows that invoke RTP or 3GPP timed-text packaging.
- Check crash logs for GPAC or MP4Box failures tied to uploaded media.
- Verify any remediation against GPAC-maintained issue or release notes.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-36584 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/gpac/gpac/issues/1842CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.