CVE-2020-12667
Ubuntu Security Notice USN-7047-1
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
Knot Resolver versiones anteriores a 5.1.1, permite la amplificación del tráfico mediante una respuesta DNS diseñada desde un servidor controlado por el atacante, también se conoce como un problema de "NXNSAttack". Esto es activado por subdominios aleatorios en los registros NS en NSDNAME.
VladimÃr Äunát discovered that Knot Resolver incorrectly handled input during DNSSEC validation. A remote attacker could possibly use this issue to bypass certain validations. VladimÃr Äunát discovered that Knot Resolver incorrectly handled input during DNSSEC validation. A remote attacker could possibly use this issue to downgrade DNSSEC-secure domains to a DNSSEC-insecure state, resulting in a domain hijacking attack.
CVSS Scores
SSVC
- Decision:Attend
Timeline
- 2020-05-05 CVE Reserved
- 2020-05-19 CVE Published
- 2024-08-04 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-400: Uncontrolled Resource Consumption
CAPEC
References (6)
URL | Tag | Source |
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http://cyber-security-group.cs.tau.ac.il/# | Technical Description | |
http://www.openwall.com/lists/oss-security/2020/05/19/2 | Mailing List |
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https://lists.debian.org/debian-lts-announce/2024/04/msg00017.html | Mailing List |
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URL | Date | SRC |
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URL | Date | SRC |
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Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Nic Search vendor "Nic" | Knot Resolver Search vendor "Nic" for product "Knot Resolver" | < 5.1.1 Search vendor "Nic" for product "Knot Resolver" and version " < 5.1.1" | - |
Affected
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