Medium severity · published Apr 29, 2021
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 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as…
6.5
CVSS
6.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)6.3% · higher than 94% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AI
Active IQ Unified Manager · Netapp
All versions, or not specified · source: NVD
A5
Aff 500f Firmware · Netapp
All versions, or not specified · source: NVD
AA
Aff A250 Firmware · Netapp
All versions, or not specified · source: NVD
BI
Bind · Isc
9.8.5 through 9.8.8; 9.9.3 before 9.11.31; 9.12.0 before 9.16.15; 9.17.0 before 9.17.12; 9.9.3; 9.9.12; +17 more · source: NVD
CB
Cloud Backup · Netapp
All versions, or not specified · source: NVD
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
FE
Fedora · Fedoraproject
33; 34 · source: NVD
HF
H300e Firmware · Netapp
All versions, or not specified · source: NVD
HF
H300s Firmware · Netapp
All versions, or not specified · source: NVD
HF
H410s Firmware · Netapp
All versions, or not specified · source: NVD
HF
H500e Firmware · Netapp
All versions, or not specified · source: NVD
HF
H500s Firmware · Netapp
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-25214
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-25214
Mailing List
http://www.openwall.com/lists/oss-security/2021/04/29/1
Mailing List
http://www.openwall.com/lists/oss-security/2021/04/29/2
Mailing List
http://www.openwall.com/lists/oss-security/2021/04/29/3
Mailing List
http://www.openwall.com/lists/oss-security/2021/04/29/4
Patch
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
Vendor Advisory
https://kb.isc.org/v1/docs/cve-2021-25214
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