CVE catalog

CVE-2019-6475

bind9: CVE-2019-6475

Severity: Medium · CVSS 5.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Published: Oct 17, 2019, 8:15:12 PM UTC
Source: [NVD] · [CVE record]
EPSS: 1.34% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	bind9	sid	`1:9.20.30-1`	not affected
Debian	bind9	forky	`1:9.20.30-1`	not affected
Debian	bind9	trixie	`1:9.20.26-1~deb13u1`	not affected
Debian	bind9	trixie-security	`1:9.20.30-1~deb13u1`	not affected
Debian	bind9	bookworm	`1:9.18.49-1~deb12u1`	not affected
Debian	bind9	bookworm-security	`1:9.18.49-1~deb12u3`	not affected
Alpine	bind	3.10	`9.14.7-r0`	fixed
Alpine	bind	3.11	`9.14.7-r0`	fixed
Alpine	bind	3.12	`9.14.7-r0`	fixed
Alpine	bind	3.13	`9.14.7-r0`	fixed
Alpine	bind	3.14	`9.14.7-r0`	fixed
Alpine	bind	3.15	`9.14.7-r0`	fixed
Alpine	bind	3.16	`9.14.7-r0`	fixed
Alpine	bind	3.17	`9.14.7-r0`	fixed
Alpine	bind	3.18	`9.14.7-r0`	fixed
Alpine	bind	3.19	`9.14.7-r0`	fixed
Alpine	bind	3.20	`9.14.7-r0`	fixed
Alpine	bind	3.21	`9.14.7-r0`	fixed
Alpine	bind	3.22	`9.14.7-r0`	fixed
Alpine	bind	3.23	`9.14.7-r0`	fixed
Alpine	bind	3.24	`9.14.7-r0`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	bind9	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	bind9	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	bind9	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	bind9	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Alpine	bind	apk	3.10	`9.14.7-r0`	Not reported	ALPINE-CVE-2019-6475	Not reported
Alpine	bind	apk	3.11	`9.14.7-r0`	Not reported	ALPINE-CVE-2019-6475	Not reported
Alpine	bind	apk	3.12	`9.14.7-r0`	Not reported	ALPINE-CVE-2019-6475	Not reported
Alpine	bind	apk	3.13	`9.14.7-r0`	Not reported	ALPINE-CVE-2019-6475	Not reported
Alpine	bind	apk	3.14	`9.14.7-r0`	Not reported	ALPINE-CVE-2019-6475	Not reported
Alpine	bind	apk	3.15	`9.14.7-r0`	Not reported	ALPINE-CVE-2019-6475	Not reported
Alpine	bind	apk	3.16	`9.14.7-r0`	Not reported	ALPINE-CVE-2019-6475	Not reported
Alpine	bind	apk	3.17	`9.14.7-r0`	Not reported	ALPINE-CVE-2019-6475	Not reported
Alpine	bind	apk	3.18	`9.14.7-r0`	Not reported	ALPINE-CVE-2019-6475	Not reported
Alpine	bind	apk	3.19	`9.14.7-r0`	Not reported	ALPINE-CVE-2019-6475	Not reported
Alpine	bind	apk	3.20	`9.14.7-r0`	Not reported	ALPINE-CVE-2019-6475	Not reported
Alpine	bind	apk	3.21	`9.14.7-r0`	Not reported	ALPINE-CVE-2019-6475	Not reported
Alpine	bind	apk	3.22	`9.14.7-r0`	Not reported	ALPINE-CVE-2019-6475	Not reported
Alpine	bind	apk	3.23	`9.14.7-r0`	Not reported	ALPINE-CVE-2019-6475	Not reported
Alpine	bind	apk	3.24	`9.14.7-r0`	Not reported	ALPINE-CVE-2019-6475	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[bind9]Unknown
Details (6)
- 1:9.18.49-1~deb12u1 · amd64 · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u1 · arm64 · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.20.23-1~deb13u1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.20.23-1~deb13u1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · amd64 · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · arm64 · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
[bind9-dev]Unknown
Source package: [bind9]
Details (6)
- 1:9.18.49-1~deb12u1 · amd64 · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u1 · arm64 · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.20.23-1~deb13u1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.20.23-1~deb13u1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · amd64 · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · arm64 · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
[bind9-dnsutils]Unknown
Source package: [bind9]
Details (6)
- 1:9.18.49-1~deb12u1 · amd64 · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u1 · arm64 · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.20.23-1~deb13u1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.20.23-1~deb13u1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · amd64 · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · arm64 · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
[bind9-doc]Unknown
Source package: [bind9]
Details (6)
- 1:9.18.49-1~deb12u1 · all · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u1 · all · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.20.23-1~deb13u1~bpo12+1 · all · bookworm-backports
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.20.23-1~deb13u1~bpo12+1 · all · bookworm-backports
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · all · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · all · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
[bind9-host]Unknown
Source package: [bind9]
Details (6)
- 1:9.18.49-1~deb12u1 · amd64 · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u1 · arm64 · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.20.23-1~deb13u1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.20.23-1~deb13u1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · amd64 · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · arm64 · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
[bind9-libs]Unknown
Source package: [bind9]
Details (6)
- 1:9.18.49-1~deb12u1 · amd64 · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u1 · arm64 · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.20.23-1~deb13u1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.20.23-1~deb13u1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · amd64 · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · arm64 · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
[bind9-utils]Unknown
Source package: [bind9]
Details (6)
- 1:9.18.49-1~deb12u1 · amd64 · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u1 · arm64 · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.20.23-1~deb13u1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.20.23-1~deb13u1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · amd64 · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · arm64 · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
[bind9utils]Unknown
Source package: [bind9]
Details (4)
- 1:9.18.49-1~deb12u1 · all · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u1 · all · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · all · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · all · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
[dnsutils]Unknown
Source package: [bind9]
Details (4)
- 1:9.18.49-1~deb12u1 · all · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u1 · all · bookworm
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · all · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm
- 1:9.18.49-1~deb12u2 · all · bookworm-security
  Not affected
  dsa · bind9 · debian · bookworm

Observed: Oct 23, 2026, 5:44:53 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]