CVE-2021-3978 – Cloudflare octorpki SUID Privilege Escalation Vulnerability

The following table lists the changes that have been made to the
CVE-2021-3978 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Jan. 29, 2025

    Action Type Old Value New Value
    Added 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.
    Added CVSS V3.1 AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
    Added CWE CWE-269
    Added Reference https://github.com/cloudflare/cfrpki/security/advisories/GHSA-3pqh-p72c-fj85
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