CVE-2021-25219

原文の説明

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.

影響を受けるソフトウェア

• BIND 9 = 9.11.5= 9.16.13= 9.11.3= 9.11.21= 9.16.21= 9.11.12 修正バージョン: 9.17.19, 9.11.36, 9.16.22 完全一致

詳細

公開日

2021-10-27

最終更新

2026-06-17

CVSS ベクター

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

参考資料

• cve.org/CVE-2021-25219
• nvd.nist.gov/vuln/detail/CVE-2021-25219
• cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
• kb.isc.org/v1/docs/cve-2021-25219
• lists.debian.org/debian-lts-announce/2021/11/msg00001.html
• lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E...
• lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y...
• lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y...
• security.gentoo.org/glsa/202210-25
• security.netapp.com/advisory/ntap-20211118-0002/
• www.debian.org/security/2021/dsa-4994
• www.oracle.com/security-alerts/cpuapr2022.html