CVE-2021-3978: Improper Preservation of Permissions in github.com/cloudflare/cfrpki/cmd/octorpki
High · CVSS 7.5 (CVSS 3.1)EPSS 0.14%, 4th percentilePublished Updated Assigner: cloudflare
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.
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H · CWE-269
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
Cloudflare: octorpki
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- github.com/cloudflare/cfrpki/security/advisories/GHSA-3pqh-p72c-fj85 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)