Multiple vulnerabilities in Slurm

Published: 2020-11-27 | Updated: 2021-01-29

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-27746 CVE-2020-27745
CWE-ID	CWE-362 CWE-119
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Slurm Server applications / Remote management servers, RDP, SSH
Vendor	SchedMD

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Race condition

EUVDB-ID: #VU50142

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-27746

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 gain access to sensitive information.

The vulnerability exists due to a race condition in the xauth for X11 magic cookies when reading data on the /proc filesystem. A local user can exploit the race and gain unauthorized access to sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Slurm: 19.05.0.0 - 20.02.5.1

External links

http://www.debian.org/security/2021/dsa-4841
http://www.schedmd.com/news.php

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.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

2) Buffer overflow

EUVDB-ID: #VU50143