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CVE-2021-25219

Lame cache can be abused to severely degrade resolver performance PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
ISC / BIND9affected Open Source Branches 9.3 through 9.11 9.3.0 through versions before 9.11.36; affected Open Source Branches 9.12 through 9.16 9.12.0 through versions before 9.16.22; affected Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 through versions before 9.11.36-S1; affected Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.22-S1; affected Development Branch 9.17 9.17.0 through versions before 9.17.19

CWE

No CWE identifiers supplied.

References

ADP enrichment

CVE

No English description supplied.