Authentication bypass in Slurm

1) Authentication bypass using an alternate path or channel

EUVDB-ID: #VU46672

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12693

CWE-ID: CWE-288 - Authentication Bypass Using an Alternate Path or Channel

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to a race condition during authentication process, if Message Aggregation is enabled. A remote non-authenticated attacker can send specially crafted request to the application, bypass authentication process and execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Slurm: 19.05.0.0 - 20.02.2.1

External links

http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00035.html
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KNL5E5SK4WP6M3DKU4IKW2NPQD2XTZ4Y/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T3RGQB3EWDLOLTSPAJPPWZEPQK3O3AUH/
http://lists.schedmd.com/pipermail/slurm-announce/2020/000036.html
http://www.schedmd.com/news.php?id=236

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker 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.