1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU52033

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-0466

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

Exploit availability: No

Description

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

The vulnerability exists due to unspecified error, related to I/O subsystem in kernel. A local user can elevated privileges on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kernel (Red Hat package): 4.18.0-193.6.3.el8_2 - 4.18.0-193.51.1.el8_2

Red Hat Enterprise Linux Server - TUS: 8.2

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CPE2.3

• cpe:2.3:o:red_hat:kernel:4.18.0-193.51.1.el8_2:*:*:*:*:red_hat_enterprise_linux:*:*

External links

http://access.redhat.com/errata/RHSA-2021:2185

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Race condition

EUVDB-ID: #VU27480

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-12114

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service attack.

The vulnerability exists due to a race condition between threads updating mountpoint reference counter. A local user can exploit the race and crash the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kernel (Red Hat package): 4.18.0-193.6.3.el8_2 - 4.18.0-193.51.1.el8_2

Red Hat Enterprise Linux Server - TUS: 8.2

---

CPE2.3

• cpe:2.3:o:red_hat:kernel:4.18.0-193.51.1.el8_2:*:*:*:*:red_hat_enterprise_linux:*:*

External links

http://access.redhat.com/errata/RHSA-2021:2185

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

3) Integer overflow

EUVDB-ID: #VU54234

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-12362

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. A local user can run a specially crafted program to trigger integer overflow and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kernel (Red Hat package): 4.18.0-193.6.3.el8_2 - 4.18.0-193.51.1.el8_2

Red Hat Enterprise Linux Server - TUS: 8.2

---

CPE2.3

• cpe:2.3:o:red_hat:kernel:4.18.0-193.51.1.el8_2:*:*:*:*:red_hat_enterprise_linux:*:*

External links

http://access.redhat.com/errata/RHSA-2021:2185

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

4) Path traversal

EUVDB-ID: #VU49914

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2020-28374

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in drivers/target/target_core_xcopy.c in the Linux kernel. A remote user with access to iSCSI LUN can send a specially crafted XCOPY request and read or write arbitrary files on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kernel (Red Hat package): 4.18.0-193.6.3.el8_2 - 4.18.0-193.51.1.el8_2

Red Hat Enterprise Linux Server - TUS: 8.2

---

CPE2.3

• cpe:2.3:o:red_hat:kernel:4.18.0-193.51.1.el8_2:*:*:*:*:red_hat_enterprise_linux:*:*

External links

http://access.redhat.com/errata/RHSA-2021:2185

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?