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Vulnerability of Knot Resolver: denial of service via DNS Replies Many RR

Synthesis of the vulnerability 

An attacker can trigger a fatal error via DNS Replies Many RR of Knot Resolver, in order to trigger a denial of service.
Vulnerable products: Fedora.
Severity of this weakness: 2/4.
Creation date: 13/12/2019.
Références of this bulletin: CVE-2019-19331, FEDORA-2019-44ccfa9b29, FEDORA-2019-866dc03603, VIGILANCE-VUL-31146.

Description of the vulnerability 

An attacker can trigger a fatal error via DNS Replies Many RR of Knot Resolver, in order to trigger a denial of service.
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This computer threat alert impacts software or systems such as Fedora.

Our Vigil@nce team determined that the severity of this weakness announce is medium.

The trust level is of type confirmed by the editor, with an origin of internet server.

An attacker with a expert ability can exploit this computer weakness bulletin.

Solutions for this threat 

Fedora: new knot-resolver packages.
New packages are available:
  Fedora 30: knot-resolver 4.3.0-1.fc30
  Fedora 31: knot-resolver 4.3.0-1.fc31
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