CVE-2021-3978

When copying files with rsync, octorpki uses the "-a" flag 0, which forces rsync to copy binaries with the suid bit set as root. Since the provided service definition defaults to root ( https://github.com/cloudflare/cfrpki/blob/master/package/octorpki.service ) this could allow for a vector, when combined with another vulnerability that causes octorpki to process a malicious TAL file, for a local privilege escalation.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 0.8 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/cloudflare/cfrpki/security/advisories/GHSA-3pqh-p72c-fj85	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:cloudflare:octorpki:*:*:*:*:*:*:*:*

History

29 Jul 2025, 23:40

Type	Values Removed	Values Added
First Time		Cloudflare Cloudflare octorpki
CWE		NVD-CWE-noinfo
Summary		(es) Al copiar archivos con rsync, octorpki utiliza el indicador "-a" 0, que obliga a rsync a copiar binarios con el bit suid establecido como root. Dado que la definición de servicio proporcionada tiene como valor predeterminado root (https://github.com/cloudflare/cfrpki/blob/master/package/octorpki.service), esto podría permitir un vector, cuando se combina con otra vulnerabilidad que hace que octorpki procese un archivo TAL malicioso, para una escalada de privilegios local.
CPE		cpe:2.3:a:cloudflare:octorpki::::::::
References	~~() https://github.com/cloudflare/cfrpki/security/advisories/GHSA-3pqh-p72c-fj85 -~~	() https://github.com/cloudflare/cfrpki/security/advisories/GHSA-3pqh-p72c-fj85 - Vendor Advisory

29 Jan 2025, 10:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-01-29 10:15

Updated : 2025-07-29 23:40

NVD link : CVE-2021-3978

Mitre link : CVE-2021-3978

CVE.ORG link : CVE-2021-3978

JSON object : View

Products Affected

cloudflare

octorpki

CWE

CWE-269

Improper Privilege Management

NVD-CWE-noinfo

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