cve-2019-19331
Vulnerability from cvelistv5
Published
2019-12-16 00:00
Modified
2024-08-05 02:16
Severity ?
7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
knot-resolver before version 4.3.0 is vulnerable to denial of service through high CPU utilization. DNS replies with very many resource records might be processed very inefficiently, in extreme cases taking even several CPU seconds for each such uncached message. For example, a few thousand A records can be squashed into one DNS message (limit is 64kB).
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19331Exploit, Issue Tracking, Patch
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2024/04/msg00017.html
secalert@redhat.comhttps://www.knot-resolver.cz/2019-12-04-knot-resolver-4.3.0.htmlRelease Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19331Exploit, Issue Tracking, Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html
af854a3a-2127-422b-91ae-364da2661108https://www.knot-resolver.cz/2019-12-04-knot-resolver-4.3.0.htmlRelease Notes, Vendor Advisory
Impacted products
Vendor Product Version
CZ.NIC knot-resolver Version: 4.3.0
Show details on NVD website

To clipboard 

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  }
}


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