vulnwire
7.5high

CVE-2021-25215in critical feed

An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself

Published 5 y ago · modified 4 mo ago · JSON

CVSS
7.5
v3.1 · CNA
CISA KEV
No
not known exploited
EPSS
11.7%
percentile 96%
Public exploits
0
none known

In BIND 9.0.0 -> 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 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 query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9.

Exploit prediction (EPSS)

11.70% probability of exploitation in the next 30 days, higher than 96% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
CNA3.17.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA3.17.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD3.17.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD2.05.0AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • ISC BIND9

Classification

Weakness

References

  • kb.isc.org /v1/docs/cve-2021-25215 · x_refsource_CONFIRM, x_transferred
  • openwall.com /lists/oss-security/2021/04/29/1 · mailing-list, x_refsource_MLIST, x_transferred
  • openwall.com /lists/oss-security/2021/04/29/2 · mailing-list, x_refsource_MLIST, x_transferred
  • openwall.com /lists/oss-security/2021/04/29/3 · mailing-list, x_refsource_MLIST, x_transferred
  • openwall.com /lists/oss-security/2021/04/29/4 · mailing-list, x_refsource_MLIST, x_transferred
  • debian.org /security/2021/dsa-4909 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • lists.debian.org /debian-lts-announce/2021/05/msg00001.html · mailing-list, x_refsource_MLIST, x_transferred
  • lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/VEC2XG4Q2ODTN2C4CGXEIXU3 · vendor-advisory, x_refsource_FEDORA, x_transferred
  • lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/ZDSRPCJQ7MZC6CENH5PO3VQO · vendor-advisory, x_refsource_FEDORA, x_transferred
  • oracle.com /security-alerts/cpuoct2021.html · x_refsource_MISC, x_transferred
  • security.netapp.com /advisory/ntap-20210521-0006/ · x_refsource_CONFIRM, x_transferred
  • cert-portal.siemens.com /productcert/pdf/ssa-389290.pdf · x_refsource_CONFIRM, x_transferred

Sources

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