Multiple vulnerabilities in Moby

Published: 2021-10-04 | Updated: 2023-05-04

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-41089 CVE-2021-41091
CWE-ID	CWE-281
Exploitation vector	Local
Public exploit	Public exploit code for vulnerability #2 is available.
Vulnerable software Subscribe	moby Server applications / Virtualization software
Vendor	Moby project

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper Preservation of Permissions

EUVDB-ID: #VU64415

Risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-41089

CWE-ID: CWE-281 - Improper preservation of permissions

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly impose security restrictions, which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

moby: 20.10.0 - 20.10.8

External links

http://github.com/moby/moby/commit/bce32e5c93be4caf1a592582155b9cb837fc129a
http://github.com/moby/moby/security/advisories/GHSA-v994-f8vw-g7j4
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZNFADTCHHYWVM6W4NJ6CB4FNFM2VMBIB/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B5Q6G6I4W5COQE25QMC7FJY3I3PAYFBB/
http://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf

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) Improper Preservation of Permissions

EUVDB-ID: #VU64416