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ubuntucveUbuntu.comUB:CVE-2021-25219
HistoryOct 27, 2021 - 12:00 a.m.

CVE-2021-25219

2021-10-2700:00:00
ubuntu.com
ubuntu.com
19

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.003 Low

EPSS

Percentile

71.2%

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.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchbind9< 1:9.11.3+dfsg-1ubuntu1.16UNKNOWN
ubuntu20.04noarchbind9< 1:9.16.1-0ubuntu2.9UNKNOWN
ubuntu21.04noarchbind9< 1:9.16.8-1ubuntu3.2UNKNOWN
ubuntu21.10noarchbind9< 1:9.16.15-1ubuntu1.1UNKNOWN
ubuntu22.04noarchbind9< 1:9.16.15-1ubuntu2UNKNOWN
ubuntu14.04noarchbind9< 1:9.9.5.dfsg-3ubuntu0.19+esm5) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchbind9< 1:9.10.3.dfsg.P4-8ubuntu1.19+esm1) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.003 Low

EPSS

Percentile

71.2%