CVE-2021-25214

MEDIUMMonitor

Published:Apr 29, 2021(5 years ago)

Modified:Nov 21, 2024

Remote ExploitNo InteractionLow Complexity

Vulnerability Description

In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.

Attack Characteristics

Network AccessLow ComplexityLow PrivilegesNo User Interaction

🤖

AI analysis not yet available

Plain-English explanation, risk summary, and remediation steps will appear here once AI analysis is complete.

No Fix Known

No patch has been released yet. Apply workarounds or mitigations where available.

Affected Software

Vendor	Product	Versions	Fixed In
isc	bind	9.8.5 - 9.8.8	-
isc	bind	9.9.3 - 9.11.31	-
isc	bind	9.12.0 - 9.16.15

Timeline

Published
CVE disclosed publicly
Apr 29, 20215 years ago
Last Modified
Most recent update
Nov 21, 20241 year ago
Indexed to CVEInsight
Added to this platform
Mar 29, 20261 month ago

References

http://www.openwall.com/lists/oss-security/2021/04/29/4Mailing List
http://www.openwall.com/lists/oss-security/2021/04/29/1Mailing List
http://www.openwall.com/lists/oss-security/2021/04/29/2Mailing List

CVSS Score

v3.1

6.5/ 10.0

MEDIUM

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

At a Glance

Affected Products

References

isc / bind

http://www.openwall.com/lists/oss-security/2021/04/29/3Mailing List

https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch

https://kb.isc.org/v1/docs/cve-2021-25214Vendor Advisory

https://lists.debian.org/debian-lts-announce/2021/05/msg00001.htmlMailing List

https://lists.fedoraproject.org/archives/list/package-announce%40lists...

https://security.netapp.com/advisory/ntap-20210521-0006/Third Party Advisory

https://www.debian.org/security/2021/dsa-4909Third Party Advisory

http://www.openwall.com/lists/oss-security/2021/04/29/1Mailing List

http://www.openwall.com/lists/oss-security/2021/04/29/2Mailing List

http://www.openwall.com/lists/oss-security/2021/04/29/3Mailing List

http://www.openwall.com/lists/oss-security/2021/04/29/4Mailing List

https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch

https://kb.isc.org/v1/docs/cve-2021-25214Vendor Advisory

https://lists.debian.org/debian-lts-announce/2021/05/msg00001.htmlMailing List

https://lists.fedoraproject.org/archives/list/package-announce%40lists...

https://security.netapp.com/advisory/ntap-20210521-0006/Third Party Advisory

https://www.debian.org/security/2021/dsa-4909Third Party Advisory

CVSS v3 Vector

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

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

Impact

ScopeUnchanged

ConfidentialityNone

IntegrityNone

AvailabilityHigh

Impact Analysis

ConfidentialityNone

NoneLowHigh

IntegrityNone

NoneLowHigh

AvailabilityHigh

NoneLowHigh

CVE-2021-25214

✦ Vulnerability Description

Attack Characteristics

Affected Software

Timeline

References

CVSS Score

At a Glance

Official Sources

CVSS v3 Vector

Impact Analysis

Vulnerability Description