CVE-2019-19794
MEDIUMCVSS 5.9/10EPSS 2.07%
Last modified
CVE-2019-19794 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. 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.. EPSS estimates a 2.07% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Miekg-Dns Project | Miekg-Dns | < 1.1.25 |
References
- https://github.com/coredns/coredns/issues/3519Issue Tracking, Third Party Advisory
- https://github.com/coredns/coredns/issues/3547Third Party Advisory
- https://github.com/miekg/dns/compare/v1.1.24...v1.1.25Release Notes, Third Party Advisory
- https://github.com/miekg/dns/issues/1043Exploit, Issue Tracking, Third Party Advisory
- https://github.com/miekg/dns/pull/1044Patch, Third Party Advisory
- https://github.com/coredns/coredns/issues/3519Issue Tracking, Third Party Advisory
- https://github.com/coredns/coredns/issues/3547Third Party Advisory
- https://github.com/miekg/dns/compare/v1.1.24...v1.1.25Release Notes, Third Party Advisory
- https://github.com/miekg/dns/issues/1043Exploit, Issue Tracking, Third Party Advisory
- https://github.com/miekg/dns/pull/1044Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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.
How severe is CVE-2019-19794?
CVE-2019-19794 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 2.07% probability of exploitation in the next 30 days.
How do I fix CVE-2019-19794?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2019-19794?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST