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CVE
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CVE-2016-6171Date: (C)2017-02-11   (M)2023-12-22


Knot DNS before 2.3.0 allows remote DNS servers to cause a denial of service (memory exhaustion and slave server crash) via a large zone transfer for (1) DDNS, (2) AXFR, or (3) IXFR.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 8.6CVSS Score : 5.0
Exploit Score: 3.9Exploit Score: 10.0
Impact Score: 4.0Impact Score: 2.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: NONEAuthentication: NONE
User Interaction: NONEConfidentiality: NONE
Scope: CHANGEDIntegrity: NONE
Confidentiality: NONEAvailability: PARTIAL
Integrity: NONE 
Availability: HIGH 
  
Reference:
BID-91678
https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html
http://www.openwall.com/lists/oss-security/2016/07/06/3
http://www.openwall.com/lists/oss-security/2016/07/06/4
https://github.com/sischkg/xfer-limit/blob/master/README.md
https://gitlab.labs.nic.cz/labs/knot/blob/c546a70563ef4c7badb7cb5bdf6d1ba8e7adae82/NEWS
https://gitlab.labs.nic.cz/labs/knot/issues/464

CWE    1
CWE-400
OVAL    3
oval:org.secpod.oval:def:111247
oval:org.secpod.oval:def:111234
oval:org.secpod.oval:def:1900515

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