Improper Input Validation Affecting znc package, versions <1.7.2-2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ECHOLATEST-ZNC-19865258
- published16 Sept 2026
- disclosed27 Mar 2019
Introduced: 27 Mar 2019
CVE-2019-9917 (opens in a new tab)How to fix?
Upgrade Echo:latest znc to version 1.7.2-2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream znc package and not the znc package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
ZNC before 1.7.3-rc1 allows an existing remote user to cause a Denial of Service (crash) via invalid encoding.
References
- https://advisory.echohq.com/cve/CVE-2019-9917
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7WTRBTPL7WWKQ7DZ2ALDTCGYUWSE6SL3/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WRHCMHI44AW5CJ22WV676BKFUWWCLA7T/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZRVSINQHM623GJYYNDSBYSXT2MHKFCYQ/
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00037.html
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00018.html
- https://github.com/znc/znc/commit/64613bc8b6b4adf1e32231f9844d99cd512b8973
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7WTRBTPL7WWKQ7DZ2ALDTCGYUWSE6SL3/
- 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://seclists.org/bugtraq/2019/Jun/23
- https://usn.ubuntu.com/3950-1/
- https://www.debian.org/security/2019/dsa-4463