#VU50143 Buffer overflow in Slurm - CVE-2020-27745

Vulnerability identifier: #VU50143

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-27745

CWE-ID: CWE-119

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Slurm
Server applications / Remote management servers, RDP, SSH

Vendor: SchedMD

Description

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

The vulnerability exists due to a boundary error in the PMIx MPI plugin. A local user can run a specially crafted program to trigger buffer overflow in RPC implementation and execute arbitrary code on the system with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Slurm: 19.05.0.0 - 19.05.7.1, 20.02.0.1 - 20.02.5.1

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External links
https://www.debian.org/security/2021/dsa-4841
https://www.schedmd.com/news.php

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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.