Security readout for executives and security teams
Plain-English summary
FFmpeg 4.0 can crash when handling a specially crafted AVI conversion path. The known impact is denial of service, not data theft or remote code execution. Organizations most affected are those accepting untrusted media for transcoding or automated processing.
Executive priority
Treat this as a service reliability risk for media-processing systems. Prioritize internet-facing or customer-upload workflows first. It is lower urgency than code execution bugs unless transcoding availability is business-critical.
Technical view
The issue is in ff_mpeg4_decode_picture_header in libavcodec/mpeg4videodec.c. An inconsistent bits-per-sample value may trigger an assertion violation while converting a crafted AVI file to MPEG4. The source bundle identifies FFmpeg 4.0 and links a confirming FFmpeg commit.
Likely exposure
Exposure is most likely in services, batch jobs, or desktop workflows using FFmpeg 4.0 to process untrusted AVI files, especially transcoding to MPEG4. The bundle does not provide CPEs or a complete affected-version range.
Exploitation context
The provided sources describe a crafted AVI causing an assertion violation and denial of service. CISA KEV status is false, and the bundle provides no evidence of active exploitation or public weaponization.
Researcher notes
Evidence is narrow: CVE text, CVE metadata, and one FFmpeg commit reference. No CVSS, CWE, CPEs, exploit status, or explicit patched release version is provided in the bundle.
Mitigation direction
- Inventory FFmpeg usage in media upload, transcoding, and scanning pipelines.
- Update FFmpeg to a maintained build containing the referenced upstream fix.
- Check OS or appliance vendor guidance for packaged FFmpeg fixes.
- Restrict untrusted AVI processing where updates cannot be applied promptly.
- Run transcoding workloads with isolation and restart controls.
Validation and detection
- Confirm deployed FFmpeg versions and package build provenance.
- Check whether builds include commit 2fc108f60f98cd00813418a8754a46476b404a3c.
- Identify workflows that convert AVI files to MPEG4.
- Review logs for FFmpeg assertion failures or unexplained transcoder crashes.
- Test updated builds with normal AVI-to-MPEG4 regression samples.
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-2018-12459 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/FFmpeg/FFmpeg/commit/2fc108f60f98cd00813418a8754a46476b404a3cCVE reference · x_refsource_CONFIRM
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.