Security readout for executives and security teams
Plain-English summary
GPAC versions 0.8.0 and 0.9.0-development-20191109 can hit a NULL pointer dereference in media descriptor handling. In practical terms, a vulnerable GPAC process may crash when processing certain input. The sources do not show remote code execution or active exploitation.
Executive priority
Prioritize remediation where GPAC processes untrusted media or supports customer-facing workflows. This is not currently evidenced as actively exploited, but a crash in media processing can still interrupt services or batch pipelines.
Technical view
The issue is in gf_odf_avc_cfg_write_bs() in odf/descriptors.c. The public record describes a NULL pointer dereference affecting GPAC 0.8.0 and a 0.9.0 development snapshot dated 2019-11-09. CVSS, CWE, and detailed affected CPE data are not provided in the source bundle.
Likely exposure
Exposure is most likely where GPAC is installed and used to parse, package, or transform media from untrusted or semi-trusted sources. Confirm whether GPAC 0.8.0, the named development snapshot, or Debian packages predating DLA 2072-1 are present.
Exploitation context
CISA KEV status is false in the provided bundle, and no cited source states active exploitation. The known impact is consistent with process crash or denial of service from the reported NULL pointer dereference, not confirmed code execution.
Researcher notes
Evidence is sparse: the CVE record names the vulnerable function and versions, and Debian issued an LTS security update. No CVSS vector, CWE, exploit maturity, or full patch details are present in the supplied bundle.
Mitigation direction
- Apply the Debian LTS gpac security update where Debian packages are in use.
- Check GPAC vendor guidance for fixed versions or patched releases.
- Avoid processing untrusted media with vulnerable GPAC builds until remediated.
- Run GPAC media-processing jobs with least privilege and process isolation.
Validation and detection
- Inventory systems for GPAC 0.8.0 and 0.9.0-development-20191109.
- Check Debian hosts for gpac packages covered by DLA 2072-1.
- Review media pipelines that accept external or customer-supplied files.
- Confirm updated packages or fixed upstream builds are deployed.
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-2019-20163 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
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/1335CVE reference · x_refsource_MISC
- [debian-lts-announce] 20200120 [SECURITY] [DLA 2072-1] gpac security updateCVE reference · mailing-list, x_refsource_MLIST
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.