7.5 High
CVSS3
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
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.004 Low
EPSS
Percentile
74.6%
Debian LTS Advisory DLA-3139-1 [email protected]
https://www.debian.org/lts/security/ Chris Lamb
October 07, 2022 https://wiki.debian.org/LTS
Package : knot-resolver
Version : 3.2.1-3+deb10u1
CVE ID : CVE-2022-40188
It was discovered that there was a potential remote denial-of-service
vulnerability in the knot-resolver DNSSEC-validating DNS resolver.
Remote attackers could have caused a denial of service via CPU
consumption by exploiting algorithmic complexity: during an attack,
an authoritative server would return large nameserver or address
sets.
For Debian 10 buster, this problem has been fixed in version
3.2.1-3+deb10u1.
We recommend that you upgrade your knot-resolver packages.
For the detailed security status of knot-resolver please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/knot-resolver
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 10 | amd64 | knot-resolver | < 3.2.1-3+deb10u1 | knot-resolver_3.2.1-3+deb10u1_amd64.deb |
Debian | 10 | all | knot-resolver | < 3.2.1-3+deb10u1 | knot-resolver_3.2.1-3+deb10u1_all.deb |
Debian | 10 | all | knot-resolver-module-http | < 3.2.1-3+deb10u1 | knot-resolver-module-http_3.2.1-3+deb10u1_all.deb |
Debian | 10 | i386 | knot-resolver | < 3.2.1-3+deb10u1 | knot-resolver_3.2.1-3+deb10u1_i386.deb |
Debian | 10 | armhf | knot-resolver | < 3.2.1-3+deb10u1 | knot-resolver_3.2.1-3+deb10u1_armhf.deb |
Debian | 10 | all | knot-resolver-doc | < 3.2.1-3+deb10u1 | knot-resolver-doc_3.2.1-3+deb10u1_all.deb |
7.5 High
CVSS3
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
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.004 Low
EPSS
Percentile
74.6%