Privilege escalation in Slurm

1) Security restrictions bypass

EUVDB-ID: #VU53685

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-31215

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

Exploit availability: No

Description

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

The vulnerability exists due to improper environment handling in Slurm. A remote user can run arbitrary commands as SlurmUser if the installation uses a PrologSlurmctld and/or EpilogSlurmctld script.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Slurm: 20.02.0.1 - 20.11.6.1

External links

http://lists.schedmd.com/pipermail/slurm-announce/2021/000055.html
http://www.schedmd.com/news.php?id=248#OPT_248
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PRHTASFAU5FNB2MJOG67YID2ONQS5MCQ/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3ODMJQNY4FAV7G3DSKVIO5KY7Q7DKBPU/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

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.

Is there known malware, which exploits this vulnerability?

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