CVE-2021-25219
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
Product
Isc Bind
PublishedOct 27, 2021
First seenOct 27, 2021
How to fix
Update
- isc bind9.11.36, 9.16.22, 9.17.19 or later
- siemens sinec_infrastructure_network_services1.0.1.1 or later
Vendor advisories
- debian.org/security/2021/dsa-4994
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTKC4E3HUOLYN5IA4EBL4VAQSWG2ZVTX/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YGV7SA27CTYLGFJSPUM3V36ZWK7WWDI4/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EF4NAVRV4H3W4GA3LGGZYUKD3HSJBAVW/
- security.gentoo.org/glsa/202210-25
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| isc bind | 9.3.0 ≤ v < 9.11.36, 9.12.0 ≤ v < 9.16.22, 9.17.0 ≤ v < 9.17.19, 9.9.3, 9.9.12, 9.9.13, 9.10.5, 9.10.7, 9.11.3, 9.11.5, 9.11.6, 9.11.7, 9.11.8, 9.11.12, 9.11.21, 9.11.27, 9.11.29, 9.11.35, 9.16.8, 9.16.11, 9.16.13, 9.16.21 | 9.11.36, 9.16.22, 9.17.19 |
| debian debian_linux | 9.0, 10.0, 11.0 | — |
| fedoraproject fedora | 33, 34, 35 | — |
| netapp h300s_firmware | No range specified | — |
| netapp h500s_firmware | No range specified | — |
| netapp h700s_firmware | No range specified | — |
| netapp h300e_firmware | No range specified | — |
| netapp h500e_firmware | No range specified | — |
| netapp h700e_firmware | No range specified | — |
| netapp h410s_firmware | No range specified | — |
| netapp h410c_firmware | No range specified | — |
| netapp cloud_backup | No range specified | — |
| siemens sinec_infrastructure_network_services | v < 1.0.1.1 | 1.0.1.1 |
| oracle http_server | 12.2.1.3.0, 12.2.1.4.0 | — |
| oracle zfs_storage_appliance_kit | 8.8 | — |
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