cloudflare/cfrpki · Security
Improper Preservation of Permissions in github.com/cloudflare/cfrpki/cmd/octorpki
- GHSA ID
- GHSA-3pqh-p72c-fj85
- CVE ID
- CVE-2021-3978
- Severity
- high
- Published
- Updated
- CVSS
- 7.5 · CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
- CVSS v3
- 7.5 · CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Description
Impact
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.
For more information
If you have any questions or comments about this advisory email us at [email protected]
CWEs
- CWE-269 · Improper Privilege Management
- CWE-281 · Improper Preservation of Permissions