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ubuntucveUbuntu.comUB:CVE-2023-26249
HistoryFeb 21, 2023 - 12:00 a.m.

CVE-2023-26249

2023-02-2100:00:00
ubuntu.com
ubuntu.com
11
knot resolver
vulnerability
denial of service

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

39.0%

Knot Resolver before 5.6.0 enables attackers to consume its resources,
launching amplification attacks and potentially causing a denial of
service. Specifically, a single client query may lead to a hundred TCP
connection attempts if a DNS server closes connections without providing a
response.

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

39.0%