Description
A privilege escalation vulnerability existed in the Below service prior to v0.9.0 due to the creation of a world-writable directory at /var/log/below. This could have allowed local unprivileged users to escalate to root privileges through symlink attacks that manipulate files such as /etc/shadow.
Published: 2025-03-11
Score: 6.8 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-7209 A privilege escalation vulnerability existed in the Below service prior to v0.9.0 due to the creation of a world-writable directory at /var/log/below. This could have allowed local unprivileged users to escalate to root privileges through symlink attacks that manipulate files such as /etc/shadow.
Github GHSA Github GHSA GHSA-9mc5-7qhg-fp3w Below has Incorrect Permission Assignment for Critical Resource
History

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00025}

epss

{'score': 8e-05}


Fri, 11 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.0002}

epss

{'score': 0.00025}


Thu, 03 Jul 2025 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Facebook
Facebook below
Weaknesses CWE-732
CPEs cpe:2.3:a:facebook:below:*:*:*:*:*:rust:*:*
Vendors & Products Facebook
Facebook below

Fri, 21 Mar 2025 21:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 12 Mar 2025 14:45:00 +0000

Type Values Removed Values Added
References

Tue, 11 Mar 2025 18:45:00 +0000

Type Values Removed Values Added
Description A privilege escalation vulnerability existed in the Below service prior to v0.9.0 due to the creation of a world-writable directory at /var/log/below. This could have allowed local unprivileged users to escalate to root privileges through symlink attacks that manipulate files such as /etc/shadow.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: facebook

Published:

Updated: 2025-03-21T20:38:10.292Z

Reserved: 2025-03-03T11:36:32.537Z

Link: CVE-2025-27591

cve-icon Vulnrichment

Updated: 2025-03-12T13:08:26.252Z

cve-icon NVD

Status : Analyzed

Published: 2025-03-11T19:15:43.390

Modified: 2025-07-03T14:40:01.117

Link: CVE-2025-27591

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses