SB2021062312 - Red Hat Virtualization Host security update for ovirt
Published: June 23, 2021 Updated: October 29, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Incomplete cleanup (CVE-ID: CVE-2020-24489)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to incomplete cleanup, which leads to security restrictions bypass and privilege escalation.
2) Out-of-bounds write (CVE-ID: CVE-2021-3501)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in the KVM API in Linux kernel. A local user can run a specially crafted program to trigger an out-of-bounds write and escalate privileges on the system.
3) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-3560)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions in the "polkit_system_bus_name_get_creds_sync" function, which leads to security restrictions bypass and privilege escalation.
4) Integer overflow (CVE-ID: CVE-2021-27219)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to integer overflow within the g_bytes_new() function on 64-bit platforms due to an implicit cast from 64 bits to 32 bits. A local user can run a specially crafted program to trigger an integer overflow and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.