Cyber Resilience

CVE-2021-25219

Medium

Published: 27 October 2021

Published
27 October 2021
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS Score 0.0104 77.8th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-25219 is a medium-severity an unspecified weakness vulnerability in Isc Bind. Its CVSS base score is 5.3 (Medium).

Operationally, ranked in the top 22.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

In BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 -> 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative…

more

servers using a flaw in response processing can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it possible for its internal data structures to grow almost infinitely, which may cause significant delays in client query processing.

CWE(s)
NVD-CWE-noinfo

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

isc
bind
9.10.5, 9.10.7, 9.11.12, 9.11.21, 9.11.27 · 9.3.0 — 9.11.36 · 9.12.0 — 9.16.22 · 9.17.0 — 9.17.19
debian
debian linux
10.0, 11.0, 9.0
fedoraproject
fedora
33, 34, 35
netapp
h300s firmware
all versions
netapp
h500s firmware
all versions
netapp
h700s firmware
all versions
netapp
h300e firmware
all versions
netapp
h500e firmware
all versions
netapp
h700e firmware
all versions
netapp
h410s firmware
all versions
+5 more product configuration(s) — see NVD for full list

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References