Description
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.
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| bind9 | — | 1:9.20.18-1ubuntu2.1 |
| bind9-libs | — | — |
| isc-dhcp | — | — |
References
Similar Threats
- Unknown CLSA-2026-1780406874
- Unknown CLSA-2026-1780054328
- Unknown CLSA-2026-1780054583
- Unknown CLSA-2026-1780068979
- Unknown CLSA-2025-1762537520
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