Multiple vulnerabilities in Red Hat Virtualization
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2022-0185 CVE-2021-4034 CVE-2021-4155 CVE-2021-45417 |
| CWE-ID | CWE-190 CWE-20 CWE-264 CWE-122 |
| Exploitation vector | Local |
| Public exploit |
Public exploit code for vulnerability #1 is available. Vulnerability #2 is being exploited in the wild. |
| Vulnerable software Subscribe |
redhat-release-virtualization-host (Red Hat package) Operating systems & Components / Operating system package or component wget (Red Hat package) Operating systems & Components / Operating system package or component libmetalink (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) Integer overflow
EUVDB-ID: #VU59695
Risk: Low
CVSSv3.1: 7.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2022-0185
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to integer overflow in the legacy_parse_param() function in fs/fs_context.c in Linux kernel. A local user can tun a specially crafted program to trigger integer overflow and execute arbitrary code with root privileges.
Install updates from vendor's website.
redhat-release-virtualization-host (Red Hat package): 4.4.2-1.el8ev - 4.4.9-4.el8ev
Red Hat Virtualization Host: 4
Red Hat Virtualization: 4
wget (Red Hat package): before 1.19.5-10.el8
libmetalink (Red Hat package): before 0.1.3-7.el8
External linkshttp://access.redhat.com/errata/RHSA-2022:0540
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.
2) Input validation error
EUVDB-ID: #VU60007
Risk: Medium
CVSSv3.1: 7.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2021-4034
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper handling of the calling parameters count in the pkexec setuid binary, which causes the binary to execute environment variables as commands. A local user can craft environment variables in a way that they will be processed and executed by pkexec and execute arbitrary commands on the system as root.
Install updates from vendor's website.
redhat-release-virtualization-host (Red Hat package): 4.4.2-1.el8ev - 4.4.9-4.el8ev
Red Hat Virtualization Host: 4
Red Hat Virtualization: 4
wget (Red Hat package): before 1.19.5-10.el8
libmetalink (Red Hat package): before 0.1.3-7.el8
External linkshttp://access.redhat.com/errata/RHSA-2022:0540
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.
3) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU59812
Risk: Low
CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-4155
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to the OS kernel does not impose correctly security restrictions. A local user can gain access to sensitive information on the system.
Install updates from vendor's website.
redhat-release-virtualization-host (Red Hat package): 4.4.2-1.el8ev - 4.4.9-4.el8ev
Red Hat Virtualization Host: 4
Red Hat Virtualization: 4
wget (Red Hat package): before 1.19.5-10.el8
libmetalink (Red Hat package): before 0.1.3-7.el8
External linkshttp://access.redhat.com/errata/RHSA-2022:0540
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.
4) Heap-based buffer overflow
EUVDB-ID: #VU59952
Risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-45417
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: No
DescriptionThe vulnerability allows a local user to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in src/base64.h. A local user can use specially crafted file metadata, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
redhat-release-virtualization-host (Red Hat package): 4.4.2-1.el8ev - 4.4.9-4.el8ev
Red Hat Virtualization Host: 4
Red Hat Virtualization: 4
wget (Red Hat package): before 1.19.5-10.el8
libmetalink (Red Hat package): before 0.1.3-7.el8
External linkshttp://access.redhat.com/errata/RHSA-2022:0540
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.
