CVE-2019-6475

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Summary

CVECVE-2019-6475
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-10-17 20:15:00 UTC
Updated2023-11-07 03:13:00 UTC
DescriptionMirror zones are a BIND feature allowing recursive servers to pre-cache zone data provided by other servers. A mirror zone is similar to a zone of type secondary, except that its data is subject to DNSSEC validation before being used in answers, as if it had been looked up via traditional recursion, and when mirror zone data cannot be validated, BIND falls back to using traditional recursion instead of the mirror zone. However, an error in the validity checks for the incoming zone data can allow an on-path attacker to replace zone data that was validated with a configured trust anchor with forged data of the attacker's choosing. The mirror zone feature is most often used to serve a local copy of the root zone. If an attacker was able to insert themselves into the network path between a recursive server using a mirror zone and a root name server, this vulnerability could then be used to cause the recursive server to accept a copy of falsified root zone data. This affects BIND versions 9.14.0 up to 9.14.6, and 9.15.0 up to 9.15.4.

Risk And Classification

Problem Types: CWE-345

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Isc Bind All All All All
Application Isc Bind All All All All

References

ReferenceSourceLinkTags
October 2019 ISC BIND Vulnerabilities in NetApp Products | NetApp Product Security CONFIRM security.netapp.com Third Party Advisory
CVE-2019-6475: A flaw in mirror zone validity checking can allow zone data to be spoofed - Security Advisories CONFIRM kb.isc.org Vendor Advisory
myF5 support.f5.com
support.f5.com/csp/article/K42238532 CONFIRM support.f5.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 500056 Alpine Linux Security Update for bind
  • 503737 Alpine Linux Security Update for bind
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