Security readout for executives and security teams
Plain-English summary
CVE-2018-19891 is a crash flaw in FAAC 1.29.9.2, an audio coding library/application. If a system uses this vulnerable FAAC path, reaching the affected Huffman coding case can crash the process, causing denial of service. The provided sources do not name data theft or code execution impact.
Executive priority
Treat this as a targeted availability risk, not a broad emergency from the provided evidence. Prioritize systems that process untrusted audio or support customer-facing workflows, and defer lower-impact internal encoders after inventory is complete.
Technical view
The issue is an invalid memory address dereference in huffcode in libfaac/huff2.c. The CVE description says the book 10 case causes a segmentation fault and application crash. No CVSS score, CWE, detailed affected CPEs, or fixed version are provided in the source bundle.
Likely exposure
Exposure is most likely where FAAC 1.29.9.2 or embedded libfaac processes audio in applications, batch jobs, or services. Business impact depends on whether untrusted or high-volume audio processing can reach the vulnerable code path.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. It supports denial-of-service risk through a process crash, but does not provide public exploit status, attack prerequisites, or evidence of remote weaponization.
Researcher notes
The record is sparse: affected metadata is listed as n/a, severity is unknown, and no CVSS, CWE, CPE, or patch details are supplied. Analysis should stay anchored to FAAC 1.29.9.2 and the huffcode book 10 crash claim.
Mitigation direction
- Inventory applications and packages using FAAC or libfaac 1.29.9.2.
- Check FAAC project and vendor package guidance for a fixed release.
- Limit untrusted audio processing by vulnerable FAAC components where practical.
- Run media processing in isolated workers with restart and monitoring controls.
- Do not assume a specific fixed version from the provided sources.
Validation and detection
- Review SBOMs and dependency manifests for FAAC or libfaac.
- Confirm installed FAAC versions against the CVE description.
- Identify services that process external or user-supplied audio.
- Check crash logs for FAAC, huffcode, huff2.c, or segmentation faults.
- Track the referenced GitHub issue for maintainer context.
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-2018-19891 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/knik0/faac/issues/24CVE 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.