CVE-2019-6476
Last modified
CVE-2019-6476 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A defect in code added to support QNAME minimization can cause named to exit with an assertion failure if a forwarder returns a referral rather than resolving the query. This affects BIND versions 9.14.0 up to 9.14.6, and 9.15.0 up to 9.15.4.. EPSS estimates a 2.88% chance of exploitation in the next 30 days.
Description
A defect in code added to support QNAME minimization can cause named to exit with an assertion failure if a forwarder returns a referral rather than resolving the query. This affects BIND versions 9.14.0 up to 9.14.6, and 9.15.0 up to 9.15.4.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Isc | Bind | >= 9.14.0, <= 9.14.6 |
| Isc | Bind | >= 9.15.0, <= 9.15.4 |
References
- https://kb.isc.org/docs/cve-2019-6476Third Party Advisory
- https://kb.isc.org/docs/cve-2019-6476Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-6476?
How severe is CVE-2019-6476?
How do I fix CVE-2019-6476?
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.
Related CVEs from 2019
- CVE-2019-6470There had existed in one of the ISC BIND libraries a bug in …7.5
- CVE-2019-6471A race condition which may occur when discarding malformed p…5.9
- CVE-2019-6472A packet containing a malformed DUID can cause the Kea DHCPv…6.5
- CVE-2019-6473An invalid hostname option can trigger an assertion failure …6.5
- CVE-2019-6474A missing check on incoming client requests can be exploited…6.5
- CVE-2019-6475Mirror zones are a BIND feature allowing recursive servers t…7.5
- CVE-2019-6477With pipelining enabled each incoming query on a TCP connect…7.5
- CVE-2019-6478Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. Reason: T…
- CVE-2019-6479Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. Reason: T…
- CVE-2019-6481Abine Blur 7.8.2431 allows remote attackers to conduct "Seco…
- CVE-2019-6485Citrix NetScaler Gateway 12.1 before build 50.31, 12.0 befor…
- CVE-2019-6486Go before 1.10.8 and 1.11.x before 1.11.5 mishandles P-521 a…
Are you affected by CVE-2019-6476?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST