A race condition when discarding malformed packets can cause BIND to exit with an assertion failure
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.
- Published
- Oct 9, 2019
- Updated
- Jun 16, 2026
- EPSS
- 3.3% · 88th percentile
- CWE
- CWE-362
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Report tools
Action score
24
Monitor
Low priority for now.
- CVSS
- 23 / 40 · 5.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 3.3%
CNA vs NVD score
- NVD
- 5.9
- CNA · isc
- 5.9
- agree
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| isc | bind | cpe:2.3:a:isc:bind |
| f5 | big-ip local traffic manager | cpe:2.3:a:f5:big-ip_local_traffic_manager |
| f5 | big-ip application acceleration manager | cpe:2.3:a:f5:big-ip_application_acceleration_manager |
| f5 | big-ip advanced firewall manager | cpe:2.3:a:f5:big-ip_advanced_firewall_manager |
| f5 | big-ip analytics | cpe:2.3:a:f5:big-ip_analytics |
| f5 | big-ip access policy manager | cpe:2.3:a:f5:big-ip_access_policy_manager |
| f5 | big-ip application security manager | cpe:2.3:a:f5:big-ip_application_security_manager |
| f5 | big-ip edge gateway | cpe:2.3:a:f5:big-ip_edge_gateway |
| f5 | big-ip fraud protection service | cpe:2.3:a:f5:big-ip_fraud_protection_service |
| f5 | big-ip global traffic manager | cpe:2.3:a:f5:big-ip_global_traffic_manager |
| f5 | big-ip link controller | cpe:2.3:a:f5:big-ip_link_controller |
| f5 | big-ip webaccelerator | cpe:2.3:a:f5:big-ip_webaccelerator |
and 5 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- f5 big-ip access policy manager13.1.0 and later · up to 13.1.1 inclusive
- f5 big-ip access policy manager11.6.1 and later · up to 11.6.4 inclusive
- f5 big-ip access policy manager12.1.0 and later · up to 12.1.4 inclusive
- f5 big-ip access policy manager11.5.2 and later · up to 11.5.9 inclusive
- f5 big-ip access policy manager14.0.0
- f5 big-ip access policy manager14.1.0
- f5 big-ip access policy manager15.0.0
- f5 big-ip advanced firewall manager13.1.0 and later · up to 13.1.1 inclusive
- f5 big-ip advanced firewall manager11.5.2 and later · up to 11.5.9 inclusive
- f5 big-ip advanced firewall manager11.6.1 and later · up to 11.6.4 inclusive
- f5 big-ip advanced firewall manager12.1.0 and later · up to 12.1.4 inclusive
- f5 big-ip advanced firewall manager14.0.0
- f5 big-ip advanced firewall manager14.1.0
- f5 big-ip advanced firewall manager15.0.0
- f5 big-ip analytics11.6.1 and later · up to 11.6.4 inclusive
- f5 big-ip analytics12.1.0 and later · up to 12.1.4 inclusive
- f5 big-ip analytics13.1.0 and later · up to 13.1.1 inclusive
- f5 big-ip analytics11.5.2 and later · up to 11.5.9 inclusive
- f5 big-ip analytics14.0.0
- f5 big-ip analytics14.1.0
Versions reported by the vendor
Affected version ranges reported by the assigning authority (isc). Independent of NVD's CPE analysis and usually ahead of it.
ISC BIND 9
- 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 Edaffected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Alpine:v3.10 | bind | from 9.11.0 · before 9.14.3-r0 | 9.14.3-r0 |
| Alpine:v3.11 | bind | from 9.11.0 · before 9.14.4-r0 | 9.14.4-r0 |
| Alpine:v3.7 | bind | from 9.11.0 · before 9.11.8-r0 | 9.11.8-r0 |
| Alpine:v3.8 | bind | from 9.11.0 · before 9.12.4_p2-r0 | 9.12.4_p2-r0 |
| Debian:12 | bind9 | before 1:9.11.5.P4+dfsg-5.1 | 1:9.11.5.P4+dfsg-5.1 |
| openSUSE:Leap 15.0 | bind | before 9.11.2-lp150.8.16.1 | 9.11.2-lp150.8.16.1 |
| openSUSE:Leap 15.1 | bind | before 9.11.2-lp151.11.6.1 | 9.11.2-lp151.11.6.1 |
| openSUSE:Tumbleweed | bind | before 9.16.20-1.4 | 9.16.20-1.4 |
| Red Hat:enterprise_linux:8::appstream | bind | before 32:9.11.4-17.P2.el8_0.1 | 32:9.11.4-17.P2.el8_0.1 |
| Red Hat:enterprise_linux:8::appstream | bind-chroot | before 32:9.11.4-17.P2.el8_0.1 | 32:9.11.4-17.P2.el8_0.1 |
| Red Hat:enterprise_linux:8::appstream | bind-debuginfo | before 32:9.11.4-17.P2.el8_0.1 | 32:9.11.4-17.P2.el8_0.1 |
| Red Hat:enterprise_linux:8::appstream | bind-debugsource | before 32:9.11.4-17.P2.el8_0.1 | 32:9.11.4-17.P2.el8_0.1 |
| Red Hat:enterprise_linux:8::appstream | bind-devel | before 32:9.11.4-17.P2.el8_0.1 | 32:9.11.4-17.P2.el8_0.1 |
| Red Hat:enterprise_linux:8::appstream | bind-export-libs-debuginfo | before 32:9.11.4-17.P2.el8_0.1 | 32:9.11.4-17.P2.el8_0.1 |
| Red Hat:enterprise_linux:8::appstream | bind-libs | before 32:9.11.4-17.P2.el8_0.1 | 32:9.11.4-17.P2.el8_0.1 |
| Red Hat:enterprise_linux:8::appstream | bind-libs-debuginfo | before 32:9.11.4-17.P2.el8_0.1 | 32:9.11.4-17.P2.el8_0.1 |
| Red Hat:enterprise_linux:8::appstream | bind-libs-lite | before 32:9.11.4-17.P2.el8_0.1 | 32:9.11.4-17.P2.el8_0.1 |
| Red Hat:enterprise_linux:8::appstream | bind-libs-lite-debuginfo | before 32:9.11.4-17.P2.el8_0.1 | 32:9.11.4-17.P2.el8_0.1 |
| Red Hat:enterprise_linux:8::appstream | bind-license | before 32:9.11.4-17.P2.el8_0.1 | 32:9.11.4-17.P2.el8_0.1 |
| Red Hat:enterprise_linux:8::appstream | bind-lite-devel | before 32:9.11.4-17.P2.el8_0.1 | 32:9.11.4-17.P2.el8_0.1 |
| Red Hat:enterprise_linux:8::appstream | bind-pkcs11 | before 32:9.11.4-17.P2.el8_0.1 | 32:9.11.4-17.P2.el8_0.1 |
| Red Hat:enterprise_linux:8::appstream | bind-pkcs11-debuginfo | before 32:9.11.4-17.P2.el8_0.1 | 32:9.11.4-17.P2.el8_0.1 |
| Red Hat:enterprise_linux:8::appstream | bind-pkcs11-devel | before 32:9.11.4-17.P2.el8_0.1 | 32:9.11.4-17.P2.el8_0.1 |
| Red Hat:enterprise_linux:8::appstream | bind-pkcs11-libs | before 32:9.11.4-17.P2.el8_0.1 | 32:9.11.4-17.P2.el8_0.1 |
+13
Same product
isc: all recordsOther highest-scoring records for the same primary product.
- CVE-2015-5477named in ISC BIND 9.x before 9.9.7-P2 and 9.10.x before 9.10.2-P3 allows remote attackers to cause a denial of service (REQUIRE assertion fa58Plan
- CVE-2016-2776buffer.c in named in ISC BIND 9 before 9.9.9-P3, 9.10.x before 9.10.4-P3, and 9.11.x before 9.11.0rc3 does not properly construct responses,57Plan
- CVE-2016-1286named in ISC BIND 9.x before 9.9.8-P4 and 9.10.x before 9.10.3-P4 allows remote attackers to cause a denial of service (assertion failure an53Plan
- CVE-2020-8625A vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack51Plan
- CVE-2020-8617A logic error in code which checks TSIG validity can be used to trigger an assertion failure in tsig.c51Plan
- CVE-2001-0010Buffer overflow in transaction signature (TSIG) handling code in BIND 8 allows remote attackers to gain root privileges.49Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| alpine:bind | 9.14.3-r0 · Alpine:v3.10 | Package registry (OSV) |
| debian:bind9 | 1:9.11.5.P4+dfsg-5.1 · Debian:12 | Package registry (OSV) |
| opensuse:bind | 9.11.2-lp150.8.16.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| red hat:bind | 32:9.11.4-17.P2.el8_0.1 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:bind-chroot | 32:9.11.4-17.P2.el8_0.1 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:bind-debuginfo | 32:9.11.4-17.P2.el8_0.1 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:bind-debugsource | 32:9.11.4-17.P2.el8_0.1 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:bind-devel | 32:9.11.4-17.P2.el8_0.1 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:bind-export-libs-debuginfo | 32:9.11.4-17.P2.el8_0.1 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:bind-libs | 32:9.11.4-17.P2.el8_0.1 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:bind-libs-debuginfo | 32:9.11.4-17.P2.el8_0.1 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:bind-libs-lite | 32:9.11.4-17.P2.el8_0.1 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:bind-libs-lite-debuginfo | 32:9.11.4-17.P2.el8_0.1 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:bind-license | 32:9.11.4-17.P2.el8_0.1 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| red hat:bind-lite-devel | 32:9.11.4-17.P2.el8_0.1 · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| suse:bind | 9.11.2-3.10.1 · SUSE:Linux Enterprise Desktop 12 SP4 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- kb.isc.org/docs/cve-2019-6471
- support.f5.com/csp/article/K10092301?utm_source=f5support&%3Butm_medium=RSS
Vendor advisories and official records. Exploit/PoC links are deliberately left out.