CVE-2021-25214

MEDIUM

BIND 9.8.5-9.8.8, 9.9.3-9.11.29, 9.12.0-9.16.13, 9.17.0-9.17.11 - DoS via Malformed IXFR

Title source: llm
STIX 2.1

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.

References (11)

Core 11
Core References
Vendor Advisory x_refsource_confirm
https://kb.isc.org/v1/docs/cve-2021-25214
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2021/04/29/1
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2021/04/29/2
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2021/04/29/3
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2021/04/29/4
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2021/dsa-4909
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/05/msg00001.html
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210521-0006/
Patch, Third Party Advisory x_refsource_confirm
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf

Scores

CVSS v3 6.5
EPSS 0.0075
EPSS Percentile 73.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-617
Status published
Products (34)
debian/debian_linux 9.0
debian/debian_linux 10.0
fedoraproject/fedora 33
fedoraproject/fedora 34
isc/bind 9.9.3 s1
isc/bind 9.9.12 s1
isc/bind 9.9.13 s1
isc/bind 9.10.5 s1
isc/bind 9.10.7 s1
isc/bind 9.11.3 s1
... and 24 more
Published Apr 29, 2021
Tracked Since Feb 18, 2026