Debian Security Bug TrackerDEBIANCVE:CVE-2020-12667CVE-2020-12667
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
0.003 Low
EPSS
Percentile
71.2%
Knot Resolver before 5.1.1 allows traffic amplification via a crafted DNS answer from an attacker-controlled server, aka an “NXNSAttack” issue. This is triggered by random subdomains in the NSDNAME in NS records.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | knot-resolver | < 5.1.1-0.1 | knot-resolver_5.1.1-0.1_all.deb |
| Debian | 11 | all | knot-resolver | < 5.1.1-0.1 | knot-resolver_5.1.1-0.1_all.deb |
| Debian | 10 | all | knot-resolver | <= 3.2.1-3 | knot-resolver_3.2.1-3_all.deb |
| Debian | 999 | all | knot-resolver | < 5.1.1-0.1 | knot-resolver_5.1.1-0.1_all.deb |
| Debian | 13 | all | knot-resolver | < 5.1.1-0.1 | knot-resolver_5.1.1-0.1_all.deb |
Related
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
0.003 Low
EPSS
Percentile
71.2%