| Package | Affected versions | Patched versions |
|---|---|---|
| bind | ≥ 9.11.0, ≤ 9.16.50≥ 9.18.0, < 9.18.49≥ 9.20.0, < 9.20.23≥ 9.21.0, < 9.21.22 | 9.18.499.20.239.21.22 |
BIND resolvers are vulnerable to an amplified resource consumption/exhaustion attack. If a victim resolver makes a query to a specially crafted zone, the resolver will consume disproportionate resources. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
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