SB2023061935 - SUSE update for xen

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Main Vulnerability Database SB2023061935

SB2023061935 - SUSE update for xen

Published: June 19, 2023

Security Bulletin ID SB2023061935
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

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

Description

This security bulletin contains information about 2 vulnerabilities.


1) Untrusted Pointer Dereference (CVE-ID: CVE-2022-42335)

CWE-ID: CWE-822 - Untrusted Pointer Dereference

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


The vulnerability allows a malicious guest to escalate privileges on the system.

The vulnerability exists due to an arbitrary pointer dereference. A malicious guest running in shadow mode and having a PCI device passed through can execute arbitrary code on the hypervisor.


2) Integer overflow (CVE-ID: CVE-2022-42336)

CWE-ID: CWE-190 - Integer overflow

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


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

The vulnerability exists due to integer overflow in SSBD imlementation. A remote guest can mislead other guests into observing SSBD active when it is not.


Remediation

Install update from vendor's website.

References