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CVE-2021-25219

Lame cache can be abused to severely degrade resolver performance

Published: Oct 27, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafNVD-CWE-noinfo
5.3MEDIUM
NVD MITRE
EPSS Score
8.0%
Top 6.0%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

NVD-CWE-noinfo

Affected Products

netapp
commercial·US
h300s firmware
Hardware Firmware
h500s firmware
Hardware Firmware
h700s firmware
Hardware Firmware
h300e firmware
Hardware Firmware
h500e firmware
Hardware Firmware
h700e firmware
Hardware Firmware
h410s firmware
Hardware Firmware
h410c firmware
Hardware Firmware
ISC
commercial·USaka internet systems consortium
bind
Networking Infrastructure
BIND9
Networking Infrastructure
oracle
commercial·USaka oracle corp.
http serverOn-premWeb App
Web & CMS Plugins
zfs storage appliance kitOn-premDatabase
Databases / data-warehouse-analytics
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
Astra Linux Special EditionOn-premOS
Operating Systems / linux-distro
Astra Linux Special Edition для «Эльбрус»On-premOS
Operating Systems / linux-distro
debian
oss-project·GBaka debian gnu/linux
debian linuxOn-premOS
Operating Systems / linux-distro
fedoraproject
oss-project·USaka fedora project
fedoraOn-premOS
Operating Systems / linux-distro
and 12 more affected products View all →

Exploitability

0 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
Workaround Available
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References

https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
cert-portal.siemens.com
https://kb.isc.org/v1/docs/cve-2021-25219
kb.isc.org
https://lists.debian.org/debian-lts-announce/2021/11/msg00001.html
lists.debian.org
and 105 more references View all →
News mentions
Could not load news mentions.

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