VULNERABILITY INTELLIGENCE

CVE-2021-3978

CVSS score7.5 HIGH
EPSS probability0.14%
CISA KEVNot currently listed
Published2025-01-29
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

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.

Weakness classification

  • cna@cloudflare.com: CWE-269
  • nvd@nist.gov: NVD-CWE-noinfo

Primary references