Vulnerability Details : CVE-2021-25219
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.
Products affected by CVE-2021-25219
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*
- cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*
- cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*
- cpe:2.3:a:isc:bind:9.11.5:s5:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.11.5:s3:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.9.3:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.10.7:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.11.3:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.11.7:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.10.5:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.11.6:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.11.5:s6:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.11.12:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.11.8:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.11.21:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.9.12:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.9.13:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.11.27:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.16.8:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.16.11:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.11.29:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.16.13:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.11.35:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:isc:bind:9.16.21:s1:*:*:supported_preview:*:*:*
- cpe:2.3:a:oracle:http_server:12.2.1.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
Threat overview for CVE-2021-25219
Top countries where our scanners detected CVE-2021-25219
Top open port discovered on systems with this issue
53
IPs affected by CVE-2021-25219 1,315,790
Threat actors abusing to this issue?
Yes
Find out if you* are
affected by CVE-2021-25219!
*Directly or indirectly through your vendors, service providers and 3rd parties.
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attack surface intelligence
from SecurityScorecard.
Exploit prediction scoring system (EPSS) score for CVE-2021-25219
0.52%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 65 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-25219
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
3.9
|
1.4
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
3.9
|
1.4
|
Internet Systems Consortium (ISC) |
References for CVE-2021-25219
-
https://kb.isc.org/v1/docs/cve-2021-25219
CVE-2021-25219: Lame cache can be abused to severely degrade resolver performance - Security AdvisoriesVendor Advisory
-
https://security.netapp.com/advisory/ntap-20211118-0002/
CVE-2021-25219 ISC BIND Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://www.oracle.com/security-alerts/cpuapr2022.html
Oracle Critical Patch Update Advisory - April 2022Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/11/msg00001.html
[SECURITY] [DLA 2807-1] bind9 security updateMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EF4NAVRV4H3W4GA3LGGZYUKD3HSJBAVW/
[SECURITY] Fedora 33 Update: bind-9.11.36-1.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YTKC4E3HUOLYN5IA4EBL4VAQSWG2ZVTX/
[SECURITY] Fedora 35 Update: bind-9.16.22-1.fc35 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YGV7SA27CTYLGFJSPUM3V36ZWK7WWDI4/
[SECURITY] Fedora 34 Update: bind-9.16.22-1.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://www.debian.org/security/2021/dsa-4994
Debian -- Security Information -- DSA-4994-1 bind9Third Party Advisory
-
https://security.gentoo.org/glsa/202210-25
ISC BIND: Multiple Vulnerabilities (GLSA 202210-25) — Gentoo securityThird Party Advisory
-
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
Patch;Third Party Advisory
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