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almalinuxAlmaLinuxALSA-2024:0965
HistoryFeb 26, 2024 - 12:00 a.m.

Important: unbound security update

2024-02-2600:00:00
errata.almalinux.org
19
unbound
security update
bind9
cpu consumption
dns
dnssec
resolver

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7.2 High

AI Score

Confidence

Low

0.05 Low

EPSS

Percentile

92.9%

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

Security Fix(es):

  • bind9: KeyTrap - Extreme CPU consumption in DNSSEC validator (CVE-2023-50387)
  • bind9: Preparing an NSEC3 closest encloser proof can exhaust CPU resources (CVE-2023-50868)

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.

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7.2 High

AI Score

Confidence

Low

0.05 Low

EPSS

Percentile

92.9%