Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions update for kernel



Published: 2020-11-24
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2020-14385
CVE-2020-14386
CWE-ID CWE-119
CWE-787
Exploitation vector Local
Public exploit Public exploit code for vulnerability #2 is available.
Vulnerable software
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kernel (Red Hat package)
Operating systems & Components / Operating system package or component

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU58841

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-2020-14385

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in the file system metadata validator in XFS. A local user can cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt and shutdown the the filesystem.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kernel (Red Hat package): before 4.18.0-80.31.1.el8_0

External links

http://access.redhat.com/errata/RHSA-2020:5199


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: #VU47051

Risk: Low

CVSSv3.1: 6 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-14386

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

Exploit availability: Yes

Description

The vulnerability allows a local privileged user to execute arbitrary code.

A flaw was found in the Linux kernel before 5.9-rc4. Memory corruption can be exploited to gain root privileges from unprivileged processes. The highest threat from this vulnerability is to data confidentiality and integrity.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kernel (Red Hat package): before 4.18.0-80.31.1.el8_0

External links

http://access.redhat.com/errata/RHSA-2020:5199


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.



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