CVE-2021-3978

cfrpki: When copying files with rsync, octorpki uses the "-a" flag 0, which forces rsync to copy binaries with the suid bit s...

CVE-2021-3978 is fixed in cfrpki on 1 platform by DEBIAN-CVE-2021-3978 (version 1.4.2-1), released January 29, 2025. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
5.5
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0014
3rd percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
cfrpki · Debian 12.15 (bookworm) 1.4.2-1 DEBIAN-CVE-2021-3978 Jan 29, 2025

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