CVE-2019-6471
MEDIUMCVSS 5.9/10EPSS 3.27%
Last modified
CVE-2019-6471 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. A race condition which may occur when discarding malformed packets can result in BIND exiting due to a REQUIRE assertion failure in dispatch.c. Versions affected: BIND 9.11.0 -> 9.11.7, 9.12.0 -> 9.12.4-P1, 9.14.0 -> 9.14.2. EPSS estimates a 3.27% chance of exploitation in the next 30 days.
Description
A race condition which may occur when discarding malformed packets can result in BIND exiting due to a REQUIRE assertion failure in dispatch.c. Versions affected: BIND 9.11.0 -> 9.11.7, 9.12.0 -> 9.12.4-P1, 9.14.0 -> 9.14.2. Also all releases of the BIND 9.13 development branch and version 9.15.0 of the BIND 9.15 development branch and BIND Supported Preview Edition versions 9.11.3-S1 -> 9.11.7-S1.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| F5 | Big-Ip Local Traffic Manager | >= 11.5.2, <= 11.5.9 | — |
| F5 | Big-Ip Local Traffic Manager | >= 11.6.1, <= 11.6.4 | — |
| F5 | Big-Ip Local Traffic Manager | >= 12.1.0, <= 12.1.4 | — |
| F5 | Big-Ip Local Traffic Manager | >= 13.1.0, <= 13.1.1 | — |
| F5 | Big-Ip Local Traffic Manager | 14.0.0 | — |
| F5 | Big-Ip Local Traffic Manager | 14.1.0 | — |
| F5 | Big-Ip Local Traffic Manager | 15.0.0 | — |
| F5 | Big-Ip Application Acceleration Manager | >= 11.5.2, <= 11.5.9 | — |
| F5 | Big-Ip Application Acceleration Manager | >= 11.6.1, <= 11.6.4 | — |
| F5 | Big-Ip Application Acceleration Manager | >= 12.1.0, <= 12.1.4 | — |
| F5 | Big-Ip Application Acceleration Manager | >= 13.1.0, <= 13.1.1 | — |
| F5 | Big-Ip Application Acceleration Manager | 14.0.0 | — |
| F5 | Big-Ip Application Acceleration Manager | 14.1.0 | — |
| F5 | Big-Ip Application Acceleration Manager | 15.0.0 | — |
| F5 | Big-Ip Advanced Firewall Manager | >= 11.5.2, <= 11.5.9 | — |
| F5 | Big-Ip Advanced Firewall Manager | >= 11.6.1, <= 11.6.4 | — |
| F5 | Big-Ip Advanced Firewall Manager | >= 12.1.0, <= 12.1.4 | — |
| F5 | Big-Ip Advanced Firewall Manager | >= 13.1.0, <= 13.1.1 | — |
| F5 | Big-Ip Advanced Firewall Manager | 14.0.0 | — |
| F5 | Big-Ip Advanced Firewall Manager | 14.1.0 | — |
| F5 | Big-Ip Advanced Firewall Manager | 15.0.0 | — |
| F5 | Big-Ip Analytics | >= 11.5.2, <= 11.5.9 | — |
| F5 | Big-Ip Analytics | >= 11.6.1, <= 11.6.4 | — |
| F5 | Big-Ip Analytics | >= 12.1.0, <= 12.1.4 | — |
| F5 | Big-Ip Analytics | >= 13.1.0, <= 13.1.1 | — |
| F5 | Big-Ip Analytics | 14.0.0 | — |
| F5 | Big-Ip Analytics | 14.1.0 | — |
| F5 | Big-Ip Analytics | 15.0.0 | — |
| F5 | Big-Ip Access Policy Manager | >= 11.5.2, <= 11.5.9 | — |
| F5 | Big-Ip Access Policy Manager | >= 11.6.1, <= 11.6.4 | — |
| F5 | Big-Ip Access Policy Manager | >= 12.1.0, <= 12.1.4 | — |
| F5 | Big-Ip Access Policy Manager | >= 13.1.0, <= 13.1.1 | — |
| F5 | Big-Ip Access Policy Manager | 14.0.0 | — |
| F5 | Big-Ip Access Policy Manager | 14.1.0 | — |
| F5 | Big-Ip Access Policy Manager | 15.0.0 | — |
| F5 | Big-Ip Application Security Manager | >= 11.5.2, <= 11.5.9 | — |
| F5 | Big-Ip Application Security Manager | >= 11.6.1, <= 11.6.4 | — |
| F5 | Big-Ip Application Security Manager | >= 12.1.0, <= 12.1.4 | — |
| F5 | Big-Ip Application Security Manager | >= 13.1.0, <= 13.1.1 | — |
| F5 | Big-Ip Application Security Manager | 14.0.0 | — |
| F5 | Big-Ip Application Security Manager | 14.1.0 | — |
| F5 | Big-Ip Application Security Manager | 15.0.0 | — |
| F5 | Big-Ip Edge Gateway | >= 11.5.2, <= 11.5.9 | — |
| F5 | Big-Ip Edge Gateway | >= 11.6.1, <= 11.6.4 | — |
| F5 | Big-Ip Edge Gateway | >= 12.1.0, <= 12.1.4 | — |
| F5 | Big-Ip Edge Gateway | >= 13.1.0, <= 13.1.1 | — |
| F5 | Big-Ip Edge Gateway | 14.0.0 | — |
| F5 | Big-Ip Edge Gateway | 14.1.0 | — |
| F5 | Big-Ip Edge Gateway | 15.0.0 | — |
| F5 | Big-Ip Fraud Protection Service | >= 11.5.2, <= 11.5.9 | — |
Showing 50 of 108 affected configurations. See NVD for the full list.
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-6471?
A race condition which may occur when discarding malformed packets can result in BIND exiting due to a REQUIRE assertion failure in dispatch.c. Versions affected: BIND 9.11.0 -> 9.11.7, 9.12.0 -> 9.12.4-P1, 9.14.0 -> 9.14.2. Also all releases of the BIND 9.13 development branch and version 9.15.0 of the BIND 9.15 development branch and BIND Supported Preview Edition versions 9.11.3-S1 -> 9.11.7-S1.
How severe is CVE-2019-6471?
CVE-2019-6471 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 3.27% probability of exploitation in the next 30 days.
How do I fix CVE-2019-6471?
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.
Related CVEs from 2019
- CVE-2019-6465Controls for zone transfers may not be properly applied to D…5.3
- CVE-2019-6466Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. Reason: T…
- CVE-2019-6467A programming error in the nxdomain-redirect feature can cau…7.5
- CVE-2019-6468In BIND Supported Preview Edition, an error in the nxdomain-…7.5
- CVE-2019-6469An error in the EDNS Client Subnet (ECS) feature for recursi…7.5
- CVE-2019-6470There had existed in one of the ISC BIND libraries a bug in …7.5
- 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-2019-6476A defect in code added to support QNAME minimization can cau…7.5
- CVE-2019-6477With pipelining enabled each incoming query on a TCP connect…7.5
Are you affected by CVE-2019-6471?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST