Red Hat Virtualization Host security update for ovirt



| Updated: 2022-10-29
Risk Low
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2020-24489
CVE-2021-3501
CVE-2021-3560
CVE-2021-27219
CWE-ID CWE-459
CWE-787
CWE-264
CWE-190
Exploitation vector Network
Public exploit Vulnerability #3 is being exploited in the wild.
Vulnerable software
 redhat-virtualization-host (Red Hat package)
Operating systems & Components / Operating system package or component

redhat-release-virtualization-host (Red Hat package)
Operating systems & Components / Operating system package or component

Red Hat Virtualization Host
Web applications / Remote management & hosting panels

Red Hat Virtualization
Server applications / Virtualization software

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Incomplete cleanup

EUVDB-ID: #VU54191

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-24489

CWE-ID: CWE-459 - Incomplete cleanup

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

redhat-virtualization-host (Red Hat package): 4.4.6-20210527.3.el8_4

redhat-release-virtualization-host (Red Hat package): 4.4.6-1.el8ev

Red Hat Virtualization Host: 4

Red Hat Virtualization: 4

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2021:2522


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds write

EUVDB-ID: #VU54316

Risk: Low

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-3501

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

redhat-virtualization-host (Red Hat package): 4.4.6-20210527.3.el8_4

redhat-release-virtualization-host (Red Hat package): 4.4.6-1.el8ev

Red Hat Virtualization Host: 4

Red Hat Virtualization: 4

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2021:2522


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU53837

Risk: Low

CVSSv4.0: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear]

CVE-ID: CVE-2021-3560

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

redhat-virtualization-host (Red Hat package): 4.4.6-20210527.3.el8_4

redhat-release-virtualization-host (Red Hat package): 4.4.6-1.el8ev

Red Hat Virtualization Host: 4

Red Hat Virtualization: 4

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2021:2522


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

4) Integer overflow

EUVDB-ID: #VU51456

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-27219

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

redhat-virtualization-host (Red Hat package): 4.4.6-20210527.3.el8_4

redhat-release-virtualization-host (Red Hat package): 4.4.6-1.el8ev

Red Hat Virtualization Host: 4

Red Hat Virtualization: 4

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2021:2522


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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