CVE-2021-3978

Publication date 29 January 2025

Last updated 30 July 2025

Ubuntu priority

Cvss 3 Severity Score

Description

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
cfrpki	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not in release

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
cfrpki	Upstream: 606084d

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Local
Attack complexity	High
Privileges required	Low
User interaction	Required
Scope	Changed
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H