SB2024041501 - Red Hat Enterprise Linux 9.0 Extended Update Support update for unbound

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2024041501

SB2024041501 - Red Hat Enterprise Linux 9.0 Extended Update Support update for unbound

Published: April 15, 2024 Updated: August 23, 2024

Security Bulletin ID SB2024041501
Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 67% Low 33%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Resource exhaustion (CVE-ID: CVE-2023-50387)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation when processing DNSSEC related records. A remote attacker can trigger resource exhaustion by forcing the DNS server to query a specially crafted DNSSEC zone and perform a denial of service (DoS) attack.


2) Resource exhaustion (CVE-ID: CVE-2023-50868)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation when processing DNSSEC related records. A remote attacker can trigger resource exhaustion by forcing the DNS server to query a specially crafted DNSSEC zone and perform a denial of service (DoS) attack.


3) Missing authorization (CVE-ID: CVE-2024-1488)

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to missing authorization in the unbound.service that listens on localhost on port 8953. A local user can send a specially crafted request and alter the server configuration.


Remediation

Install update from vendor's website.

References