Red Hat Enterprise Linux 7 update for kernel

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU28164

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-2020-12653

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 application does not properly impose security restrictions in the "mwifiex_cmd_append_vsie_tlv()" function in "drivers/net/wireless/marvell/mwifiex/scan.c" file. A local user can gain elevated privileges on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kernel (Red Hat package): 3.10.0-123.1.2.el7 - 3.10.0-514.76.1.el7

Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 7.3

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 7.3

Red Hat Enterprise Linux Server - TUS: 7.3

Red Hat Enterprise Linux Server - AUS: 7.3

External links

http://access.redhat.com/errata/RHSA-2020:2832

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: #VU28162

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12654

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in the "mwifiex_ret_wmm_get_status()" function in "drivers/net/wireless/marvell/mwifiex/wmm.c" file. A remote attacker can trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kernel (Red Hat package): 3.10.0-123.1.2.el7 - 3.10.0-514.76.1.el7

Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 7.3

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 7.3

Red Hat Enterprise Linux Server - TUS: 7.3

Red Hat Enterprise Linux Server - AUS: 7.3

External links

http://access.redhat.com/errata/RHSA-2020:2832

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) Improper Handling of Exceptional Conditions

EUVDB-ID: #VU28159

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12888

CWE-ID: N/A

Exploit availability: No

Description

The vulnerability allows a local user to perform a deinal of service (DoS) attack.

The vulnerability exists due to the VFIO PCI driver mishandles attempts to access disabled memory space. A local user can cause a denial of service condition on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kernel (Red Hat package): 3.10.0-123.1.2.el7 - 3.10.0-514.76.1.el7

Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 7.3

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 7.3

Red Hat Enterprise Linux Server - TUS: 7.3

Red Hat Enterprise Linux Server - AUS: 7.3

External links

http://access.redhat.com/errata/RHSA-2020:2832

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) Information disclosure

EUVDB-ID: #VU28928

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-0543

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to incomplete cleanup from specific special register read operations in some Intel(R) Processors. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kernel (Red Hat package): 3.10.0-123.1.2.el7 - 3.10.0-514.76.1.el7

Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 7.3

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 7.3

Red Hat Enterprise Linux Server - TUS: 7.3

Red Hat Enterprise Linux Server - AUS: 7.3

External links

http://access.redhat.com/errata/RHSA-2020:2832

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.