SB2024091118 - Ubuntu update for unbound

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Main Vulnerability Database SB2024091118

SB2024091118 - Ubuntu update for unbound

Published: September 11, 2024

Security Bulletin ID SB2024091118
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) NULL pointer dereference (CVE-ID: CVE-2024-43167)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


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

The vulnerability exists due to a NULL pointer dereference error within the ub_ctx_set_fwd() function. A remote attacker can send specially crafted request to the server and perform a denial of service (DoS) attack.


2) Heap-based buffer overflow (CVE-ID: CVE-2024-43168)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the cfg_mark_ports() function in config_file.c. A local user can pass a specially crafted file to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.


Remediation

Install update from vendor's website.

References