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No exploitation reportedFix available

CVE-2019-19794

No exploitation reported by the sources we read.

  • Published2019-12-13
  • Fixed in1.1.25 · 1.1.25-0.20191211073109-8ebf2e419df7
  • WeaknessCWE-338

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The miekg Go DNS package before 1.1.25, as used in CoreDNS before 1.6.6 and other products, improperly generates random numbers because math/rand is used. The TXID becomes predictable, leading to response forgeries.

Timeline

dates in UTC
  1. 2019-12-1322:15CVE publishedNVD

Versions per branch

NVD · OSV
Miekg-dns project miekg-dns
BranchAffectedFixed in
1.1< 1.1.251.1.25
1.1< 1.1.25-0.20191211073109-8ebf2e419df71.1.25-0.20191211073109-8ebf2e419df7

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • golang-github-miekg-dnsUbuntu:20.04:LTSall versions · no fixed version listed
  • golang-github-miekg-dnsUbuntu:18.04:LTSall versions · no fixed version listed
  • golang-github-miekg-dnsDebian:14all versions · fixed in 1.1.26-1
  • golang-github-miekg-dnsDebian:13all versions · fixed in 1.1.26-1
  • golang-github-miekg-dnsDebian:12all versions · fixed in 1.1.26-1
  • harbor-2.14-photon-registryChainguardall versions · no fixed version listedand 3 other packages

Vendor advisories

  • CVE-2019-19794 Red Hat Product Security2 products fixed · 2 known affected

    golang-github-miekg-dns: predictable TXID can lead to response forgeries

    osp-director-provisioner-container as a component of Red Hat OpenStack Platform 16.2 · rhosp-rhel8/osp-director-downloader as a component of Red Hat OpenStack Platform 16.2

  • RHSA-2022:2183 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Release of containers for OSP 16.2.z director operator tech preview

  • RHSA-2020:5198 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat OpenShift Jaeger security update

Full record on NVD

Fix

  1. Update Miekg-dns project miekg-dns to 1.1.25 · 1.1.25-0.20191211073109-8ebf2e419df7
  2. Vendor fix Red Hat Product Security RHSA-2022:2183 · 1 productOSP 16.2 Release - OSP Director Operator Containers tech preview
  3. Vendor fix Red Hat Product Security RHSA-2020:5198 · 1 productFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://docs.openshift.com/container-platform/4.6/jaeger/jaeger_install/rhbjaeger-updating.html
  4. No fix available, says the vendor Red Hat Product Security CVE-2019-19794 · 1 productAffected
  5. No fix planned, says the vendor Red Hat Product Security CVE-2019-19794 · 1 productWill not fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.15.9read 2026-10-23
  • NVDCVSS 2.04.3read 2026-10-23
  • NVDweakness (CWE)CWE-338read 2026-10-23
  • FIRST EPSSEPSS score2.1 %2026-11-08
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryMODERATE2021-05-18

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Published
2019-12-13
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-44r7-7p62-q3fr

Frequently asked questions

What is CVE-2019-19794?

The miekg Go DNS package before 1.1.25, as used in CoreDNS before 1.6.6 and other products, improperly generates random numbers because math/rand is used. The TXID becomes predictable, leading to response forgeries.

Is CVE-2019-19794 actively exploited?

Active exploitation of CVE-2019-19794 has not been confirmed. Its EPSS score was 2.1% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-19794?

CVE-2019-19794 has a CVSS v3 base score of 5.9 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.

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