Insufficient Verification of Data Authenticity Affecting bind package, versions <9.14.7-r0
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Test your applications- Snyk ID SNYK-ALPINE311-BIND-545632
- published 13 Nov 2019
- disclosed 17 Oct 2019
Introduced: 17 Oct 2019
CVE-2019-6475 Open this link in a new tabHow to fix?
Upgrade Alpine:3.11 bind to version 9.14.7-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream bind package and not the bind package as distributed by Alpine.
See How to fix? for Alpine:3.11 relevant fixed versions and status.
Mirror 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.
References
- https://kb.isc.org/docs/cve-2019-6475
- https://support.f5.com/csp/article/K42238532?utm_source=f5support&utm_medium=RSS
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6475
- https://security.netapp.com/advisory/ntap-20191024-0004/
- https://support.f5.com/csp/article/K42238532?utm_source=f5support&%3Butm_medium=RSS