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redhatRedHatRHSA-2022:7622
HistoryNov 08, 2022 - 6:24 a.m.

(RHSA-2022:7622) Moderate: unbound security, bug fix, and enhancement update

2022-11-0806:24:55
access.redhat.com
23
unbound packages
dns resolver
dnssec resolver
security fix
ghost domain attack
cve-2022-30698
cve-2022-30699
red hat enterprise linux 8.7.

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.004

Percentile

75.0%

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver.

The following packages have been upgraded to a later upstream version: unbound (1.16.2). (BZ#2027735)

Security Fix(es):

  • unbound: the novel ghost domain where malicious users to trigger continued resolvability of malicious domain names (CVE-2022-30698)

  • unbound: novel ghost domain attack where malicious users to trigger continued resolvability of malicious domain names (CVE-2022-30699)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.7 Release Notes linked from the References section.

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.004

Percentile

75.0%