Home/CVE/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 - 9.16.1
CVE

CVE-2021-25214

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 - 9.16.1

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.

MEDIUM · CVSS 6.5 EPSS 0.00751
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-617Reachable Assertion
▤

Affected Products & Versions

19
isc bind>= 9.8.5 and <= 9.8.8
isc bind>= 9.9.3 and < 9.11.31
isc bind>= 9.12.0 and < 9.16.15
isc bind>= 9.17.0 and < 9.17.12
isc bindall versions
debian linuxall versions
fedoraproject fedoraall versions
siemens sinec infrastructure network services< 1.0.1.1
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · security-officer@isc.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD29 Apr 2021 · 01:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

15
usnUSN-7739-1
suse-csafopenSUSE-SU-2024:10650-1
siemens-csafSSA-389290
suse-csafopenSUSE-SU-2021:1826-1
suse-csafSUSE-SU-2021:1826-1
🔗

References & Sources

11
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2021/04/29/1Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/04/29/2Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/04/29/3Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2021/04/29/4Mailing ListThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatchThird Party Advisory
https://kb.isc.org/v1/docs/cve-2021-25214Vendor Advisory
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