Security readout for executives and security teams
Plain-English summary
Bento4 1.5.0-617 can crash when parsing malformed AVC/HVCC media metadata because it reads past a heap buffer. The business impact is most likely service disruption in systems that process untrusted media files, such as upload, validation, or transcoding workflows. The sources do not show active exploitation or data theft.
Executive priority
Treat this as a targeted availability risk for media-processing systems. Prioritize remediation where external users can submit media files or where parser crashes could interrupt customer-facing workflows. Broader emergency response is not supported by the supplied evidence.
Technical view
AP4_AvccAtom and AP4_HvccAtom did not properly validate data sizes before passing data into AP4_DataBuffer::SetData in Core/Ap4DataBuffer.cpp. The reported result is a heap-based buffer over-read and application crash. A related upstream issue and commit are referenced, but the CVE bundle lacks CVSS, CWE, CPE, and release-version details.
Likely exposure
Exposure is limited to environments using Bento4, especially version 1.5.0-617, to parse user-supplied or externally sourced MP4 content. Products that bundle Bento4 may also be affected, but the CVE data does not identify downstream vendors, packages, or CPEs.
Exploitation context
The public sources describe a crash condition from malformed media parsing and include an upstream issue and commit. CISA KEV status is false in the provided bundle. There is no source-provided evidence here of active exploitation, remote code execution, privilege escalation, or a named attack campaign.
Researcher notes
The source bundle has inconsistent wording: the CVE description says heap-based buffer over-read, while one Gentoo reference title says heap-based buffer overflow. Use the CVE description and upstream references as the safer interpretation. Metadata is sparse: severity, CVSS, CWE, CPE, and fixed release are not provided.
Mitigation direction
- Identify direct and bundled Bento4 usage in media-processing services.
- Update Bento4 to a build that includes commit 53499d8d4c69142137c7c7f0097a444783fdeb90.
- Check upstream or distribution guidance for fixed release versions.
- Restrict untrusted media parsing to isolated, resource-limited workers.
- Monitor media-processing services for repeated parser crashes.
Validation and detection
- Confirm whether Bento4 1.5.0-617 is present in production or build dependencies.
- Verify the referenced fix commit is included in deployed Bento4 code.
- Review upload, transcoding, and validation paths for untrusted MP4 processing.
- Confirm malformed AVC/HVCC metadata is rejected without service crash.
- Check crash logs for AP4_DataBuffer::SetData failures.
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-2017-14646 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://blogs.gentoo.org/ago/2017/09/14/bento4-heap-based-buffer-overflow-in-ap4_databuffersetdata-ap4databuffer-cpp/CVE reference · x_refsource_MISC
- https://github.com/axiomatic-systems/Bento4/commit/53499d8d4c69142137c7c7f0097a444783fdeb90CVE reference · x_refsource_MISC
- https://github.com/axiomatic-systems/Bento4/issues/188CVE 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.