Insecure file permissions in Singularity



Published: 2019-12-18 | Updated: 2020-07-23
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-19724
CWE-ID CWE-276
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Singularity
Universal components / Libraries / Libraries used by multiple products

Vendor Singularity

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Incorrect default permissions

EUVDB-ID: #VU31793

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19724

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

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

The vulnerability exists due to insecure permissions for files and folders that are set by the application on $HOME/.singularity file when it is newly created by Singularity. A local user with access to the system can view contents of files and directories or modify them.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Singularity: 3.3.0 - 3.5.1

External links

http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00025.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00059.html
http://github.com/sylabs/singularity/releases/tag/v3.5.2


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.



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