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CVE Record

CVE-2018-19661: An issue was discovered in libsndfile 1.0.28.

An issue was discovered in libsndfile 1.0.28. There is a buffer over-read in the function i2ulaw_array in ulaw.c that will lead to a denial of service.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

libsndfile 1.0.28 has a memory read bug that can crash software processing certain audio data. The business impact is mainly service disruption where libsndfile handles untrusted audio files. The bundle does not show data theft, code execution, or active exploitation evidence.

Executive priority

Prioritize patching internet-facing or customer-facing media processing services. This is an availability issue with no cited active exploitation, so it should be handled through normal vulnerability remediation unless critical audio workflows are exposed.

Technical view

CVE-2018-19661 is a buffer over-read in libsndfile's i2ulaw_array function in ulaw.c. The described outcome is denial of service. Public references include Debian LTS and Ubuntu security updates, but the bundle does not provide CVSS, CWE, CPE, or a specific upstream fixed version.

Likely exposure

Exposure is most likely in Linux systems, containers, or applications using libsndfile 1.0.28 or vulnerable packaged builds to parse uploaded or externally supplied audio files. Systems that only process trusted audio have lower practical risk.

Exploitation context

The source bundle does not indicate CISA KEV listing or active exploitation. The issue appears triggerable through audio processing, but the provided sources only support denial of service, not code execution or privilege escalation.

Researcher notes

Evidence is incomplete for exact affected package ranges beyond libsndfile 1.0.28. The GitHub issue and distro advisories are useful starting points, but validation should rely on vendor package metadata rather than assuming all libsndfile builds are affected.

Mitigation direction

  • Apply Debian, Ubuntu, or other vendor libsndfile security updates where applicable.
  • Check upstream libsndfile guidance for the fixed release or patch status.
  • Reduce processing of untrusted audio files until affected systems are updated.
  • Update container images and bundled dependencies that include libsndfile.
  • Monitor vendor advisories for package-specific fixed versions.

Validation and detection

  • Inventory systems and containers for libsndfile 1.0.28 or vulnerable distro packages.
  • Confirm installed packages match Debian, Ubuntu, or vendor-fixed builds.
  • Identify applications that accept or transform external audio files.
  • Verify media-processing services remain stable after dependency updates.
  • Document any exception where libsndfile cannot yet be updated.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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