vulnerability
Red Hat: CVE-2021-25219: CVE-2021-25219 bind: Lame cache can be abused to severely degrade resolver performance (Multiple Advisories)
Severity | CVSS | Published | Added | Modified |
---|---|---|---|---|
5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | Oct 27, 2021 | May 13, 2022 | Jul 9, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Oct 27, 2021
Added
May 13, 2022
Modified
Jul 9, 2025
Description
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.
Solution(s)
no-fix-redhat-rpm-packageredhat-upgrade-bindredhat-upgrade-bind-chrootredhat-upgrade-bind-debuginforedhat-upgrade-bind-debugsourceredhat-upgrade-bind-develredhat-upgrade-bind-export-develredhat-upgrade-bind-export-libsredhat-upgrade-bind-export-libs-debuginforedhat-upgrade-bind-libsredhat-upgrade-bind-libs-debuginforedhat-upgrade-bind-libs-literedhat-upgrade-bind-libs-lite-debuginforedhat-upgrade-bind-licenseredhat-upgrade-bind-lite-develredhat-upgrade-bind-pkcs11redhat-upgrade-bind-pkcs11-debuginforedhat-upgrade-bind-pkcs11-develredhat-upgrade-bind-pkcs11-libsredhat-upgrade-bind-pkcs11-libs-debuginforedhat-upgrade-bind-pkcs11-utilsredhat-upgrade-bind-pkcs11-utils-debuginforedhat-upgrade-bind-sdbredhat-upgrade-bind-sdb-chrootredhat-upgrade-bind-sdb-debuginforedhat-upgrade-bind-utilsredhat-upgrade-bind-utils-debuginforedhat-upgrade-python3-bind
References

NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.