Multiple vulnerabilities in Red Hat Virtualization

1) Heap-based buffer overflow

EUVDB-ID: #VU61672

Risk: Low

CVSSv3.1: 6.3 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-27666

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: Yes

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within IPsec ESP transformation code in net/ipv4/esp4.c and net/ipv6/esp6.c in Linux kernel. A local unprivileged user can pass specially crafted data to the system, trigger a heap-based buffer overflow and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

redhat-virtualization-host-productimg (Red Hat package): 4.5.0-2.el8

redhat-release-virtualization-host (Red Hat package): 4.5.0-5.el8ev

Red Hat Virtualization Host: 4

Red Hat Virtualization: 4

CPE2.3

• cpe:2.3:o:red_hat:redhat-virtualization-host-productimg_redhat_package:4.5.0-2.el8:*:*:*:*:red_hat_enterprise_linux:*:
• cpe:2.3:o:red_hat:redhat-release-virtualization-host_redhat_package:4.5.0-5.el8ev:*:*:*:*:red_hat_enterprise_linux:*:
• cpe:2.3:a:red_hat:red_hat_virtualization_host:4:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_virtualization:4:*:*:*:*:*:*:

External links

http://access.redhat.com/errata/RHSA-2022:5678

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) Integer underflow

EUVDB-ID: #VU64062

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-28733

CWE-ID: CWE-191 - Integer underflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer underflow when processing IP packets within the grub_net_recv_ip4_packets() function. A remote attacker can send specially crafted network traffic to the affected system, trigger an integer underflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

redhat-virtualization-host-productimg (Red Hat package): 4.5.0-2.el8

redhat-release-virtualization-host (Red Hat package): 4.5.0-5.el8ev

Red Hat Virtualization Host: 4

Red Hat Virtualization: 4

CPE2.3

• cpe:2.3:o:red_hat:redhat-virtualization-host-productimg_redhat_package:4.5.0-2.el8:*:*:*:*:red_hat_enterprise_linux:*:
• cpe:2.3:o:red_hat:redhat-release-virtualization-host_redhat_package:4.5.0-5.el8ev:*:*:*:*:red_hat_enterprise_linux:*:
• cpe:2.3:a:red_hat:red_hat_virtualization_host:4:*:*:*:*:*:*:
• cpe:2.3:a:red_hat:red_hat_virtualization:4:*:*:*:*:*:*:

External links

http://access.redhat.com/errata/RHSA-2022:5678

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.