What is the CVSS score of CVE-2021-25218?

CVE-2021-25218 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 3.6%.

Is there a public PoC exploit available for CVE-2021-25218?

Yes, a public proof-of-concept exploit is available for CVE-2021-25218. Prioritise patching immediately. EPSS: 3.6%.

Is there a patch available for CVE-2021-25218?

Yes, a patch is available for CVE-2021-25218. Update the affected software to the latest version immediately.

Bind CVE-2021-25218

HIGH

Reachable Assertion (CWE-617)

2021-08-18 security-officer@isc.org

Denial Of Service Bind Fedora

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Aug 18, 2021 - 19:15 nvd

HIGH 7.5

DescriptionNVD

In BIND 9.16.19, 9.17.16. Also, version 9.16.19-S1 of BIND Supported Preview Edition When a vulnerable version of named receives a query under the circumstances described above, the named process will terminate due to a failed assertion check. The vulnerability affects only BIND 9 releases 9.16.19, 9.17.16, and release 9.16.19-S1 of the BIND Supported Preview Edition.

AnalysisAI

In BIND 9.16.19, 9.17.16. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-617. In BIND 9.16.19, 9.17.16. Also, version 9.16.19-S1 of BIND Supported Preview Edition When a vulnerable version of named receives a query under the circumstances described above, the named process will terminate due to a failed assertion check. The vulnerability affects only BIND 9 releases 9.16.19, 9.17.16, and release 9.16.19-S1 of the BIND Supported Preview Edition. Affected products include: Isc Bind, Fedoraproject Fedora. Version information: version 9.16.19.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.