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 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.
Published 2021-10-27 21:15:08
Updated 2022-12-08 03:37:27
View at NVD,   CVE.org

Threat overview for CVE-2021-25219

Top countries where our scanners detected CVE-2021-25219
Top open port discovered on systems with this issue 53
IPs affected by CVE-2021-25219 724,160
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2021-25219!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2021-25219

Probability of exploitation activity in the next 30 days: 0.34%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 69 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2021-25219

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
5.0
MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
NIST
5.3
MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
3.9
1.4
NIST
5.3
MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
3.9
1.4
Internet Systems Consortium (ISC)

References for CVE-2021-25219

Products affected by CVE-2021-25219

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