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CVE-2019-6471

A race condition when discarding malformed packets can cause BIND to exit with an assertion failure

MEDIUM
5.9
CVSS Score
Published: October 9, 2019 at 02:17 PM UTC
Updated: June 17, 2026 at 02:39 AM UTC
17 products affected across 2 vendorsBig IP Access Policy ManagerBig IP Application Security ManagerBig IP Advanced Firewall Manager

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Severity
MEDIUM5.9
Exploit prediction
EPSS 3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Big IP Access Policy Manager· F5
95%
11.5.2 ≤ v ≤ 11.5.911.6.1 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.014.1.015.0.0
Big IP Advanced Firewall Manager· F5
95%
11.5.2 ≤ v ≤ 11.5.911.6.1 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.014.1.015.0.0
Big IP Analytics· F5
95%
11.5.2 ≤ v ≤ 11.5.911.6.1 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.014.1.015.0.0
Big IP Application Acceleration Manager· F5
95%
11.5.2 ≤ v ≤ 11.5.911.6.1 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.014.1.015.0.0
Big IP Application Security Manager· F5
95%
11.5.2 ≤ v ≤ 11.5.911.6.1 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.014.1.015.0.0
Big IP Domain Name System· F5
95%
11.5.2 ≤ v ≤ 11.5.911.6.1 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.014.1.015.0.09.2.2
Big IP Edge Gateway· F5
95%
11.5.2 ≤ v ≤ 11.5.911.6.1 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.014.1.015.0.0
Big IP Fraud Protection Service· F5
95%
11.5.2 ≤ v ≤ 11.5.911.6.1 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.014.1.015.0.0
Big IP Global Traffic Manager· F5
95%
11.5.2 ≤ v ≤ 11.5.911.6.1 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.014.1.015.0.09.2.2
Big IP Link Controller· F5
95%
11.5.2 ≤ v ≤ 11.5.911.6.1 ≤ v ≤ 11.6.412.1.0 ≤ v ≤ 12.1.413.1.0 ≤ v ≤ 13.1.114.0.014.1.015.0.09.2.2

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://kb.isc.org/docs/cve-2019-6471
x_refsource_CONFIRM
Source: [email protected]
https://support.f5.com/csp/article/K10092301?utm_source=f5support&amp%3Butm_medium=RSS

CVSS

5.9MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-362CWE-617

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