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Fencer Vulns
medium 5.5

CVE-2018-19841 json

The function WavpackVerifySingleBlock in open_utils.c in libwavpack.a in WavPack through 5.1.0 allows attackers to cause a denial-of-servic…

published 2018-12-04 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-11516

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

The function WavpackVerifySingleBlock in open_utils.c in libwavpack.a in WavPack through 5.1.0 allows attackers to cause a denial-of-service (out-of-bounds read and application crash) via a crafted WavPack Lossless Audio file, as demonstrated by wvunpack.

Patch / fix

  • wavpack Debian 14, Debian 13, Debian 12 5.1.0-5

debian advisories DEBIAN-CVE-2018-19841

  • wavpack Ubuntu 18.04 LTS 5.1.0-2ubuntu1.2

ubuntu advisories UBUNTU-CVE-2018-19841

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

  • wavpack RHEL 8 5.1.0-15.el8

red hat advisories RHSA-2020:1581

  • wavpack SLES for SAP 15 SP1, SLES for SAP 15, SLES 15-LTSS +12 more 5.4.0-4.9.1
  • wavpack SLE Module for Desktop Applications 15, SLE Module for Basesystem 15 5.1.0-4.3.5

suse advisories SUSE-SU-2021:0186-1SUSE-SU-2019:0772-1

  • wavpack openSUSE Tumbleweed 5.4.0-1.6
  • wavpack openSUSE Leap 15.1 5.4.0-lp151.5.6.1
  • wavpack openSUSE Leap 15.2 5.4.0-lp152.7.3.1
  • wavpack openSUSE Leap 15.0 5.1.0-lp150.3.3.1

opensuse advisories openSUSE-SU-2024:11505-1openSUSE-SU-2021:0154-1openSUSE-SU-2021:0153-1openSUSE-SU-2019:1145-1

  • wavpack AlmaLinux 8 5.1.0-15.el8

almalinux advisories ALSA-2020:1581

  • wavpack Rocky Linux 8 5.1.0-15.el8

rocky linux advisories RLSA-2020:1581

  • wavpack Alpine 3.24, Alpine 3.23, Alpine 3.22 +14 more 5.1.0-r7
  • wavpack Alpine 3.7, Alpine 3.6 5.1.0-r3

alpine advisories ALPINE-CVE-2018-19841

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

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-2018-19841 updated cvss 3.3

wawpack: Out-of-bounds read in WavpackVerifySingleBlock function leads to DoS

  • Red Hat Enterprise Linux 8 mingw-wavpack, mingw32-wavpack, mingw64-wavpack
    affected: no fix available “Fix deferred”
  • Red Hat CodeReady Linux Builder (v. 8) wavpack-devel 5.1.0-15.el8, wavpack-debuginfo 5.1.0-15.el8, wavpack-debugsource 5.1.0-15.el8 Red Hat Enterprise Linux AppStream (v. 8) wavpack 5.1.0-15.el8
    fixed: vendor fix RHSA-2020:1581
  • Red Hat Enterprise Linux 6 wavpack Red Hat Enterprise Linux 7 wavpack
    not affected: vulnerable code not present

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

2.24% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/dbry/WavPack/issues/54 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/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.