Red Hat Enterprise Linux 7.4 update for kernel



Published: 2021-06-21 | Updated: 2021-08-15
Risk Medium
Patch available YES
Number of vulnerabilities 5
CVE-ID CVE-2019-19532
CVE-2020-12362
CVE-2020-25211
CVE-2020-25705
CVE-2020-29661
CWE-ID CWE-787
CWE-190
CWE-119
CWE-330
CWE-667
Exploitation vector Network
Public exploit Public exploit code for vulnerability #4 is available.
Vulnerable software
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kernel (Red Hat package)
Operating systems & Components / Operating system package or component

Red Hat Enterprise Linux Server - Update Services for SAP Solutions
Operating systems & Components / Operating system package or component

Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions
Operating systems & Components / Operating system package or component

Red Hat Enterprise Linux Server - TUS
Operating systems & Components / Operating system

Red Hat Enterprise Linux Server - AUS
Operating systems & Components / Operating system

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains information about 5 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU24440

Risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19532

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

Exploit availability: No

Description

The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in drivers/hid/hid-axff.c, drivers/hid/hid-dr.c, drivers/hid/hid-emsff.c, drivers/hid/hid-gaff.c, drivers/hid/hid-holtekff.c, drivers/hid/hid-lg2ff.c, drivers/hid/hid-lg3ff.c, drivers/hid/hid-lg4ff.c, drivers/hid/hid-lgff.c, drivers/hid/hid-logitech-hidpp.c, drivers/hid/hid-microsoft.c, drivers/hid/hid-sony.c, drivers/hid/hid-tmff.c, and drivers/hid/hid-zpff.c. A local user with physical access can use a malicious USB device in the Linux kernel HID drivers, 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, 3.10.0-123.4.2.el7, 3.10.0-123.4.4.el7, 3.10.0-123.6.3.el7, 3.10.0-123.8.1.el7, 3.10.0-123.9.2.el7, 3.10.0-123.13.1.el7, 3.10.0-123.13.2.el7, 3.10.0-229.20.1.el7, 3.10.0-229.24.2.el7, 3.10.0-229.26.2.el7, 3.10.0-229.38.1.el7, 3.10.0-229.40.1.el7, 3.10.0-229.42.2.el7, 3.10.0-229.46.1.el7, 3.10.0-229.48.1.el7, 3.10.0-229.49.1.el7, 3.10.0-229.el7, 3.10.0-327.3.1.el7, 3.10.0-327.4.5.el7, 3.10.0-327.10.1.el7, 3.10.0-327.18.2.el7, 3.10.0-327.22.2.el7, 3.10.0-327.28.2.el7, 3.10.0-327.28.3.el7, 3.10.0-327.36.1.el7, 3.10.0-327.36.2.el7, 3.10.0-327.36.3.el7, 3.10.0-327.41.3.el7, 3.10.0-327.46.1.el7, 3.10.0-327.49.2.el7, 3.10.0-327.53.1.el7, 3.10.0-327.55.2.el7, 3.10.0-327.58.1.el7, 3.10.0-327.59.2.el7, 3.10.0-327.59.3.el7, 3.10.0-327.61.3.el7, 3.10.0-327.66.1.el7, 3.10.0-327.66.3.el7, 3.10.0-327.66.5.el7, 3.10.0-327.71.1.el7, 3.10.0-327.71.4.el7, 3.10.0-327.73.1.el7, 3.10.0-327.76.1.el7, 3.10.0-327.78.2.el7, 3.10.0-327.79.2.el7, 3.10.0-327.82.1.el7, 3.10.0-327.82.2.el7, 3.10.0-327.83.1.el7, 3.10.0-327.85.1.el7, 3.10.0-327.86.1.el7, 3.10.0-327.88.1.el7, 3.10.0-327.89.1.el7, 3.10.0-327.90.2.el7, 3.10.0-327.93.1.el7, 3.10.0-327.96.1.el7, 3.10.0-327.el7, 3.10.0-514.6.1.el7, 3.10.0-514.6.2.el7, 3.10.0-514.10.2.el7, 3.10.0-514.16.1.el7, 3.10.0-514.21.1.el7, 3.10.0-514.21.2.el7, 3.10.0-514.26.1.el7, 3.10.0-514.28.1.el7, 3.10.0-514.28.2.el7, 3.10.0-514.32.2.el7, 3.10.0-514.32.3.el7, 3.10.0-514.44.1.el7, 3.10.0-514.48.3.el7, 3.10.0-514.48.5.el7, 3.10.0-514.51.1.el7, 3.10.0-514.53.1.el7, 3.10.0-514.55.4.el7, 3.10.0-514.58.1.el7, 3.10.0-514.61.1.el7, 3.10.0-514.64.2.el7, 3.10.0-514.66.2.el7, 3.10.0-514.69.1.el7, 3.10.0-514.70.1.el7, 3.10.0-514.70.2.el7, 3.10.0-514.70.3.el7, 3.10.0-514.71.1.el7, 3.10.0-514.72.1.el7, 3.10.0-514.73.1.el7, 3.10.0-514.74.1.el7, 3.10.0-514.76.1.el7, 3.10.0-514.78.1.el7, 3.10.0-514.85.1.el7, 3.10.0-514.86.1.el7, 3.10.0-514.88.1.el7, 3.10.0-514.el7, 3.10.0-693.1.1.el7, 3.10.0-693.2.2.el7, 3.10.0-693.5.2.el7, 3.10.0-693.11.1.el7, 3.10.0-693.17.1.el7, 3.10.0-693.21.1.el7, 3.10.0-693.25.2.el7, 3.10.0-693.25.4.el7, 3.10.0-693.25.7.el7, 3.10.0-693.33.1.el7, 3.10.0-693.37.4.el7, 3.10.0-693.39.1.el7, 3.10.0-693.43.1.el7, 3.10.0-693.44.1.el7, 3.10.0-693.47.2.el7, 3.10.0-693.50.3.el7, 3.10.0-693.55.1.el7, 3.10.0-693.58.1.el7, 3.10.0-693.59.1.el7, 3.10.0-693.60.1.el7, 3.10.0-693.60.2.el7, 3.10.0-693.60.3.el7, 3.10.0-693.61.1.el7, 3.10.0-693.62.1.el7, 3.10.0-693.64.1.el7, 3.10.0-693.65.1.el7, 3.10.0-693.67.1.el7, 3.10.0-693.69.1.el7, 3.10.0-693.71.2.el7, 3.10.0-693.76.1.el7, 3.10.0-693.77.1.el7, 3.10.0-693.81.1.el7, 3.10.0-693.82.1.el7, 3.10.0-693.84.1.el7

Red Hat Enterprise Linux Server - Update Services for SAP Solutions: 7.4

Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions: 7.4

Red Hat Enterprise Linux Server - TUS: 7.4

Red Hat Enterprise Linux Server - AUS: 7.4

CPE2.3 External links

http://access.redhat.com/errata/RHSA-2021:2164

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

2) Integer overflow

EUVDB-ID: #VU54234

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-2020-12362

CWE-ID: CWE-190 - Integer Overflow or Wraparound

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): 3.10.0-123.1.2.el7, 3.10.0-123.4.2.el7, 3.10.0-123.4.4.el7, 3.10.0-123.6.3.el7, 3.10.0-123.8.1.el7, 3.10.0-123.9.2.el7, 3.10.0-123.13.1.el7, 3.10.0-123.13.2.el7, 3.10.0-229.20.1.el7, 3.10.0-229.24.2.el7, 3.10.0-229.26.2.el7, 3.10.0-229.38.1.el7, 3.10.0-229.40.1.el7, 3.10.0-229.42.2.el7, 3.10.0-229.46.1.el7, 3.10.0-229.48.1.el7, 3.10.0-229.49.1.el7, 3.10.0-229.el7, 3.10.0-327.3.1.el7, 3.10.0-327.4.5.el7, 3.10.0-327.10.1.el7, 3.10.0-327.18.2.el7, 3.10.0-327.22.2.el7, 3.10.0-327.28.2.el7, 3.10.0-327.28.3.el7, 3.10.0-327.36.1.el7, 3.10.0-327.36.2.el7, 3.10.0-327.36.3.el7, 3.10.0-327.41.3.el7, 3.10.0-327.46.1.el7, 3.10.0-327.49.2.el7, 3.10.0-327.53.1.el7, 3.10.0-327.55.2.el7, 3.10.0-327.58.1.el7, 3.10.0-327.59.2.el7, 3.10.0-327.59.3.el7, 3.10.0-327.61.3.el7, 3.10.0-327.66.1.el7, 3.10.0-327.66.3.el7, 3.10.0-327.66.5.el7, 3.10.0-327.71.1.el7, 3.10.0-327.71.4.el7, 3.10.0-327.73.1.el7, 3.10.0-327.76.1.el7, 3.10.0-327.78.2.el7, 3.10.0-327.79.2.el7, 3.10.0-327.82.1.el7, 3.10.0-327.82.2.el7, 3.10.0-327.83.1.el7, 3.10.0-327.85.1.el7, 3.10.0-327.86.1.el7, 3.10.0-327.88.1.el7, 3.10.0-327.89.1.el7, 3.10.0-327.90.2.el7, 3.10.0-327.93.1.el7, 3.10.0-327.96.1.el7, 3.10.0-327.el7, 3.10.0-514.6.1.el7, 3.10.0-514.6.2.el7, 3.10.0-514.10.2.el7, 3.10.0-514.16.1.el7, 3.10.0-514.21.1.el7, 3.10.0-514.21.2.el7, 3.10.0-514.26.1.el7, 3.10.0-514.28.1.el7, 3.10.0-514.28.2.el7, 3.10.0-514.32.2.el7, 3.10.0-514.32.3.el7, 3.10.0-514.44.1.el7, 3.10.0-514.48.3.el7, 3.10.0-514.48.5.el7, 3.10.0-514.51.1.el7, 3.10.0-514.53.1.el7, 3.10.0-514.55.4.el7, 3.10.0-514.58.1.el7, 3.10.0-514.61.1.el7, 3.10.0-514.64.2.el7, 3.10.0-514.66.2.el7, 3.10.0-514.69.1.el7, 3.10.0-514.70.1.el7, 3.10.0-514.70.2.el7, 3.10.0-514.70.3.el7, 3.10.0-514.71.1.el7, 3.10.0-514.72.1.el7, 3.10.0-514.73.1.el7, 3.10.0-514.74.1.el7, 3.10.0-514.76.1.el7, 3.10.0-514.78.1.el7, 3.10.0-514.85.1.el7, 3.10.0-514.86.1.el7, 3.10.0-514.88.1.el7, 3.10.0-514.el7, 3.10.0-693.1.1.el7, 3.10.0-693.2.2.el7, 3.10.0-693.5.2.el7, 3.10.0-693.11.1.el7, 3.10.0-693.17.1.el7, 3.10.0-693.21.1.el7, 3.10.0-693.25.2.el7, 3.10.0-693.25.4.el7, 3.10.0-693.25.7.el7, 3.10.0-693.33.1.el7, 3.10.0-693.37.4.el7, 3.10.0-693.39.1.el7, 3.10.0-693.43.1.el7, 3.10.0-693.44.1.el7, 3.10.0-693.47.2.el7, 3.10.0-693.50.3.el7, 3.10.0-693.55.1.el7, 3.10.0-693.58.1.el7, 3.10.0-693.59.1.el7, 3.10.0-693.60.1.el7, 3.10.0-693.60.2.el7, 3.10.0-693.60.3.el7, 3.10.0-693.61.1.el7, 3.10.0-693.62.1.el7, 3.10.0-693.64.1.el7, 3.10.0-693.65.1.el7, 3.10.0-693.67.1.el7, 3.10.0-693.69.1.el7, 3.10.0-693.71.2.el7, 3.10.0-693.76.1.el7, 3.10.0-693.77.1.el7, 3.10.0-693.81.1.el7, 3.10.0-693.82.1.el7, 3.10.0-693.84.1.el7

Red Hat Enterprise Linux Server - Update Services for SAP Solutions: 7.4

Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions: 7.4

Red Hat Enterprise Linux Server - TUS: 7.4

Red Hat Enterprise Linux Server - AUS: 7.4

CPE2.3 External links

http://access.redhat.com/errata/RHSA-2021:2164

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.

3) Buffer overflow

EUVDB-ID: #VU51545

Risk: Low

CVSSv3.1: 6.2 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-25211

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: No

Description

The vulnerability allows a local user to crash the system.

The vulnerability exists due to a boundary error within the ctnetlink_parse_tuple_filter() function in net/netfilter/nf_conntrack_netlink.c. A local user can inject conntrack netlink configuration, trigger buffer overflow and crash the kernel or force usage of incorrect protocol numbers.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kernel (Red Hat package): 3.10.0-123.1.2.el7, 3.10.0-123.4.2.el7, 3.10.0-123.4.4.el7, 3.10.0-123.6.3.el7, 3.10.0-123.8.1.el7, 3.10.0-123.9.2.el7, 3.10.0-123.13.1.el7, 3.10.0-123.13.2.el7, 3.10.0-229.20.1.el7, 3.10.0-229.24.2.el7, 3.10.0-229.26.2.el7, 3.10.0-229.38.1.el7, 3.10.0-229.40.1.el7, 3.10.0-229.42.2.el7, 3.10.0-229.46.1.el7, 3.10.0-229.48.1.el7, 3.10.0-229.49.1.el7, 3.10.0-229.el7, 3.10.0-327.3.1.el7, 3.10.0-327.4.5.el7, 3.10.0-327.10.1.el7, 3.10.0-327.18.2.el7, 3.10.0-327.22.2.el7, 3.10.0-327.28.2.el7, 3.10.0-327.28.3.el7, 3.10.0-327.36.1.el7, 3.10.0-327.36.2.el7, 3.10.0-327.36.3.el7, 3.10.0-327.41.3.el7, 3.10.0-327.46.1.el7, 3.10.0-327.49.2.el7, 3.10.0-327.53.1.el7, 3.10.0-327.55.2.el7, 3.10.0-327.58.1.el7, 3.10.0-327.59.2.el7, 3.10.0-327.59.3.el7, 3.10.0-327.61.3.el7, 3.10.0-327.66.1.el7, 3.10.0-327.66.3.el7, 3.10.0-327.66.5.el7, 3.10.0-327.71.1.el7, 3.10.0-327.71.4.el7, 3.10.0-327.73.1.el7, 3.10.0-327.76.1.el7, 3.10.0-327.78.2.el7, 3.10.0-327.79.2.el7, 3.10.0-327.82.1.el7, 3.10.0-327.82.2.el7, 3.10.0-327.83.1.el7, 3.10.0-327.85.1.el7, 3.10.0-327.86.1.el7, 3.10.0-327.88.1.el7, 3.10.0-327.89.1.el7, 3.10.0-327.90.2.el7, 3.10.0-327.93.1.el7, 3.10.0-327.96.1.el7, 3.10.0-327.el7, 3.10.0-514.6.1.el7, 3.10.0-514.6.2.el7, 3.10.0-514.10.2.el7, 3.10.0-514.16.1.el7, 3.10.0-514.21.1.el7, 3.10.0-514.21.2.el7, 3.10.0-514.26.1.el7, 3.10.0-514.28.1.el7, 3.10.0-514.28.2.el7, 3.10.0-514.32.2.el7, 3.10.0-514.32.3.el7, 3.10.0-514.44.1.el7, 3.10.0-514.48.3.el7, 3.10.0-514.48.5.el7, 3.10.0-514.51.1.el7, 3.10.0-514.53.1.el7, 3.10.0-514.55.4.el7, 3.10.0-514.58.1.el7, 3.10.0-514.61.1.el7, 3.10.0-514.64.2.el7, 3.10.0-514.66.2.el7, 3.10.0-514.69.1.el7, 3.10.0-514.70.1.el7, 3.10.0-514.70.2.el7, 3.10.0-514.70.3.el7, 3.10.0-514.71.1.el7, 3.10.0-514.72.1.el7, 3.10.0-514.73.1.el7, 3.10.0-514.74.1.el7, 3.10.0-514.76.1.el7, 3.10.0-514.78.1.el7, 3.10.0-514.85.1.el7, 3.10.0-514.86.1.el7, 3.10.0-514.88.1.el7, 3.10.0-514.el7, 3.10.0-693.1.1.el7, 3.10.0-693.2.2.el7, 3.10.0-693.5.2.el7, 3.10.0-693.11.1.el7, 3.10.0-693.17.1.el7, 3.10.0-693.21.1.el7, 3.10.0-693.25.2.el7, 3.10.0-693.25.4.el7, 3.10.0-693.25.7.el7, 3.10.0-693.33.1.el7, 3.10.0-693.37.4.el7, 3.10.0-693.39.1.el7, 3.10.0-693.43.1.el7, 3.10.0-693.44.1.el7, 3.10.0-693.47.2.el7, 3.10.0-693.50.3.el7, 3.10.0-693.55.1.el7, 3.10.0-693.58.1.el7, 3.10.0-693.59.1.el7, 3.10.0-693.60.1.el7, 3.10.0-693.60.2.el7, 3.10.0-693.60.3.el7, 3.10.0-693.61.1.el7, 3.10.0-693.62.1.el7, 3.10.0-693.64.1.el7, 3.10.0-693.65.1.el7, 3.10.0-693.67.1.el7, 3.10.0-693.69.1.el7, 3.10.0-693.71.2.el7, 3.10.0-693.76.1.el7, 3.10.0-693.77.1.el7, 3.10.0-693.81.1.el7, 3.10.0-693.82.1.el7, 3.10.0-693.84.1.el7

Red Hat Enterprise Linux Server - Update Services for SAP Solutions: 7.4

Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions: 7.4

Red Hat Enterprise Linux Server - TUS: 7.4

Red Hat Enterprise Linux Server - AUS: 7.4

CPE2.3 External links

http://access.redhat.com/errata/RHSA-2021:2164

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) Use of insufficiently random values

EUVDB-ID: #VU49150

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-25705

CWE-ID: CWE-330 - Use of Insufficiently Random Values

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

A flaw in the way reply ICMP packets are limited in the Linux kernel functionality was found that allows to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypassing source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kernel (Red Hat package): 3.10.0-123.1.2.el7, 3.10.0-123.4.2.el7, 3.10.0-123.4.4.el7, 3.10.0-123.6.3.el7, 3.10.0-123.8.1.el7, 3.10.0-123.9.2.el7, 3.10.0-123.13.1.el7, 3.10.0-123.13.2.el7, 3.10.0-229.20.1.el7, 3.10.0-229.24.2.el7, 3.10.0-229.26.2.el7, 3.10.0-229.38.1.el7, 3.10.0-229.40.1.el7, 3.10.0-229.42.2.el7, 3.10.0-229.46.1.el7, 3.10.0-229.48.1.el7, 3.10.0-229.49.1.el7, 3.10.0-229.el7, 3.10.0-327.3.1.el7, 3.10.0-327.4.5.el7, 3.10.0-327.10.1.el7, 3.10.0-327.18.2.el7, 3.10.0-327.22.2.el7, 3.10.0-327.28.2.el7, 3.10.0-327.28.3.el7, 3.10.0-327.36.1.el7, 3.10.0-327.36.2.el7, 3.10.0-327.36.3.el7, 3.10.0-327.41.3.el7, 3.10.0-327.46.1.el7, 3.10.0-327.49.2.el7, 3.10.0-327.53.1.el7, 3.10.0-327.55.2.el7, 3.10.0-327.58.1.el7, 3.10.0-327.59.2.el7, 3.10.0-327.59.3.el7, 3.10.0-327.61.3.el7, 3.10.0-327.66.1.el7, 3.10.0-327.66.3.el7, 3.10.0-327.66.5.el7, 3.10.0-327.71.1.el7, 3.10.0-327.71.4.el7, 3.10.0-327.73.1.el7, 3.10.0-327.76.1.el7, 3.10.0-327.78.2.el7, 3.10.0-327.79.2.el7, 3.10.0-327.82.1.el7, 3.10.0-327.82.2.el7, 3.10.0-327.83.1.el7, 3.10.0-327.85.1.el7, 3.10.0-327.86.1.el7, 3.10.0-327.88.1.el7, 3.10.0-327.89.1.el7, 3.10.0-327.90.2.el7, 3.10.0-327.93.1.el7, 3.10.0-327.96.1.el7, 3.10.0-327.el7, 3.10.0-514.6.1.el7, 3.10.0-514.6.2.el7, 3.10.0-514.10.2.el7, 3.10.0-514.16.1.el7, 3.10.0-514.21.1.el7, 3.10.0-514.21.2.el7, 3.10.0-514.26.1.el7, 3.10.0-514.28.1.el7, 3.10.0-514.28.2.el7, 3.10.0-514.32.2.el7, 3.10.0-514.32.3.el7, 3.10.0-514.44.1.el7, 3.10.0-514.48.3.el7, 3.10.0-514.48.5.el7, 3.10.0-514.51.1.el7, 3.10.0-514.53.1.el7, 3.10.0-514.55.4.el7, 3.10.0-514.58.1.el7, 3.10.0-514.61.1.el7, 3.10.0-514.64.2.el7, 3.10.0-514.66.2.el7, 3.10.0-514.69.1.el7, 3.10.0-514.70.1.el7, 3.10.0-514.70.2.el7, 3.10.0-514.70.3.el7, 3.10.0-514.71.1.el7, 3.10.0-514.72.1.el7, 3.10.0-514.73.1.el7, 3.10.0-514.74.1.el7, 3.10.0-514.76.1.el7, 3.10.0-514.78.1.el7, 3.10.0-514.85.1.el7, 3.10.0-514.86.1.el7, 3.10.0-514.88.1.el7, 3.10.0-514.el7, 3.10.0-693.1.1.el7, 3.10.0-693.2.2.el7, 3.10.0-693.5.2.el7, 3.10.0-693.11.1.el7, 3.10.0-693.17.1.el7, 3.10.0-693.21.1.el7, 3.10.0-693.25.2.el7, 3.10.0-693.25.4.el7, 3.10.0-693.25.7.el7, 3.10.0-693.33.1.el7, 3.10.0-693.37.4.el7, 3.10.0-693.39.1.el7, 3.10.0-693.43.1.el7, 3.10.0-693.44.1.el7, 3.10.0-693.47.2.el7, 3.10.0-693.50.3.el7, 3.10.0-693.55.1.el7, 3.10.0-693.58.1.el7, 3.10.0-693.59.1.el7, 3.10.0-693.60.1.el7, 3.10.0-693.60.2.el7, 3.10.0-693.60.3.el7, 3.10.0-693.61.1.el7, 3.10.0-693.62.1.el7, 3.10.0-693.64.1.el7, 3.10.0-693.65.1.el7, 3.10.0-693.67.1.el7, 3.10.0-693.69.1.el7, 3.10.0-693.71.2.el7, 3.10.0-693.76.1.el7, 3.10.0-693.77.1.el7, 3.10.0-693.81.1.el7, 3.10.0-693.82.1.el7, 3.10.0-693.84.1.el7

Red Hat Enterprise Linux Server - Update Services for SAP Solutions: 7.4

Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions: 7.4

Red Hat Enterprise Linux Server - TUS: 7.4

Red Hat Enterprise Linux Server - AUS: 7.4

CPE2.3 External links

http://access.redhat.com/errata/RHSA-2021:2164

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.

5) Improper locking

EUVDB-ID: #VU51543

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-2020-29661

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

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

The vulnerability exists due to locking error in the tty subsystem of the Linux kernel in drivers/tty/tty_jobctrl.c. An local user can exploit this vulnerability to trigger a use-after-free error against TIOCSPGRP and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kernel (Red Hat package): 3.10.0-123.1.2.el7, 3.10.0-123.4.2.el7, 3.10.0-123.4.4.el7, 3.10.0-123.6.3.el7, 3.10.0-123.8.1.el7, 3.10.0-123.9.2.el7, 3.10.0-123.13.1.el7, 3.10.0-123.13.2.el7, 3.10.0-229.20.1.el7, 3.10.0-229.24.2.el7, 3.10.0-229.26.2.el7, 3.10.0-229.38.1.el7, 3.10.0-229.40.1.el7, 3.10.0-229.42.2.el7, 3.10.0-229.46.1.el7, 3.10.0-229.48.1.el7, 3.10.0-229.49.1.el7, 3.10.0-229.el7, 3.10.0-327.3.1.el7, 3.10.0-327.4.5.el7, 3.10.0-327.10.1.el7, 3.10.0-327.18.2.el7, 3.10.0-327.22.2.el7, 3.10.0-327.28.2.el7, 3.10.0-327.28.3.el7, 3.10.0-327.36.1.el7, 3.10.0-327.36.2.el7, 3.10.0-327.36.3.el7, 3.10.0-327.41.3.el7, 3.10.0-327.46.1.el7, 3.10.0-327.49.2.el7, 3.10.0-327.53.1.el7, 3.10.0-327.55.2.el7, 3.10.0-327.58.1.el7, 3.10.0-327.59.2.el7, 3.10.0-327.59.3.el7, 3.10.0-327.61.3.el7, 3.10.0-327.66.1.el7, 3.10.0-327.66.3.el7, 3.10.0-327.66.5.el7, 3.10.0-327.71.1.el7, 3.10.0-327.71.4.el7, 3.10.0-327.73.1.el7, 3.10.0-327.76.1.el7, 3.10.0-327.78.2.el7, 3.10.0-327.79.2.el7, 3.10.0-327.82.1.el7, 3.10.0-327.82.2.el7, 3.10.0-327.83.1.el7, 3.10.0-327.85.1.el7, 3.10.0-327.86.1.el7, 3.10.0-327.88.1.el7, 3.10.0-327.89.1.el7, 3.10.0-327.90.2.el7, 3.10.0-327.93.1.el7, 3.10.0-327.96.1.el7, 3.10.0-327.el7, 3.10.0-514.6.1.el7, 3.10.0-514.6.2.el7, 3.10.0-514.10.2.el7, 3.10.0-514.16.1.el7, 3.10.0-514.21.1.el7, 3.10.0-514.21.2.el7, 3.10.0-514.26.1.el7, 3.10.0-514.28.1.el7, 3.10.0-514.28.2.el7, 3.10.0-514.32.2.el7, 3.10.0-514.32.3.el7, 3.10.0-514.44.1.el7, 3.10.0-514.48.3.el7, 3.10.0-514.48.5.el7, 3.10.0-514.51.1.el7, 3.10.0-514.53.1.el7, 3.10.0-514.55.4.el7, 3.10.0-514.58.1.el7, 3.10.0-514.61.1.el7, 3.10.0-514.64.2.el7, 3.10.0-514.66.2.el7, 3.10.0-514.69.1.el7, 3.10.0-514.70.1.el7, 3.10.0-514.70.2.el7, 3.10.0-514.70.3.el7, 3.10.0-514.71.1.el7, 3.10.0-514.72.1.el7, 3.10.0-514.73.1.el7, 3.10.0-514.74.1.el7, 3.10.0-514.76.1.el7, 3.10.0-514.78.1.el7, 3.10.0-514.85.1.el7, 3.10.0-514.86.1.el7, 3.10.0-514.88.1.el7, 3.10.0-514.el7, 3.10.0-693.1.1.el7, 3.10.0-693.2.2.el7, 3.10.0-693.5.2.el7, 3.10.0-693.11.1.el7, 3.10.0-693.17.1.el7, 3.10.0-693.21.1.el7, 3.10.0-693.25.2.el7, 3.10.0-693.25.4.el7, 3.10.0-693.25.7.el7, 3.10.0-693.33.1.el7, 3.10.0-693.37.4.el7, 3.10.0-693.39.1.el7, 3.10.0-693.43.1.el7, 3.10.0-693.44.1.el7, 3.10.0-693.47.2.el7, 3.10.0-693.50.3.el7, 3.10.0-693.55.1.el7, 3.10.0-693.58.1.el7, 3.10.0-693.59.1.el7, 3.10.0-693.60.1.el7, 3.10.0-693.60.2.el7, 3.10.0-693.60.3.el7, 3.10.0-693.61.1.el7, 3.10.0-693.62.1.el7, 3.10.0-693.64.1.el7, 3.10.0-693.65.1.el7, 3.10.0-693.67.1.el7, 3.10.0-693.69.1.el7, 3.10.0-693.71.2.el7, 3.10.0-693.76.1.el7, 3.10.0-693.77.1.el7, 3.10.0-693.81.1.el7, 3.10.0-693.82.1.el7, 3.10.0-693.84.1.el7

Red Hat Enterprise Linux Server - Update Services for SAP Solutions: 7.4

Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions: 7.4

Red Hat Enterprise Linux Server - TUS: 7.4

Red Hat Enterprise Linux Server - AUS: 7.4

CPE2.3 External links

http://access.redhat.com/errata/RHSA-2021:2164

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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