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Fencer Vulns
medium 6.5

CVE-2018-19661 json

An issue was discovered in libsndfile 1.0.28.

published 2018-11-29 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-11345

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

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.

Patch / fix

  • libsndfile Debian 14, Debian 13, Debian 12 1.0.28-5

debian advisories DEBIAN-CVE-2018-19661

  • libsndfile Ubuntu 16.04 LTS 1.0.25-10ubuntu0.16.04.2
  • libsndfile Ubuntu 18.04 LTS 1.0.28-4ubuntu0.18.04.1
  • libsndfile Ubuntu Pro 14.04 LTS 1.0.25-7ubuntu2.2+esm1

ubuntu advisories UBUNTU-CVE-2018-19661

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libsndfile Alpine 3.24, Alpine 3.23, Alpine 3.22 +13 more 1.0.28-r6
  • libsndfile Alpine 3.7, Alpine 3.6, Alpine 3.5 1.0.28-r4
  • libsndfile Alpine 3.8 1.0.28-r5

alpine advisories ALPINE-CVE-2018-19661

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libsndfile Arch Linux 1.0.31-1
  • lib32-libsndfile Arch Linux 1.0.31-1

arch linux advisories AVG-1549AVG-1550

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-19661 updated cvss 3.3

libsndfile: buffer over-read in the function i2ulaw_array in ulaw.c

  • Red Hat Enterprise Linux 6 libsndfile
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 7 libsndfile, libsndfile-utils Red Hat Enterprise Linux 8 libsndfile, libsndfile-utils
    affected: no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.05% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/erikd/libsndfile/issues/429 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.