Important: unbound security update

2024-02-2600:00:00

Google

osv.dev

unbound

security update

dns

dnssec

resolver

bind9

cpu consumption

cve

cvss score

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%

JSON

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.