SB2024111443 - Fedora 40 update for xen

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2024111443

SB2024111443 - Fedora 40 update for xen

Published: November 14, 2024

Security Bulletin ID SB2024111443
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Improper locking (CVE-ID: CVE-2024-45818)

CWE-ID: CWE-667 - Improper Locking

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


The vulnerability allows a malicious guest to perform a denial of service attack (DoS) on the target system.

The vulnerability exists due to improper locking in standard VGA implementation. A malicious guest can cause a deadlock and perform a denial of service attack against the entire host.


2) Memory leak (CVE-ID: CVE-2024-45819)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

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


The vulnerability allows a malicious guest to gain access to sensitive information.

The vulnerability exists due data leak in libxl related to how PBH guests work with ACPI tables. A malicious guest can access sensitive information pertaining to the host, control domain, or other guests.


Remediation

Install update from vendor's website.

References