CVE-2019-19331 describes a denial-of-service vulnerability in knot-resolver versions prior to 4.3.0, affecting Debian and NIC implementations. An attacker can exploit this by sending DNS replies containing a large number of resource records, causing high CPU utilization and potentially several seconds of processing time per message. This vulnerability carries a CVSS score of 7.5 (HIGH) due to its network-based attack vector and high impact on availability, with no user interaction required. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 4.3.0CPE matchmatch criteria | cpe:2.3:a:nic:knot_resolver:*:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.