CVE-2021-3978— Improper Preservation of Permissions in github.com/cloudflare/cfrpki/cmd/octorpki
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I. Basic Information for CVE-2021-3978
Vulnerability Information
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Vulnerability Title
Improper Preservation of Permissions in github.com/cloudflare/cfrpki/cmd/octorpki
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
特权管理不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cloudflare OctoRPKI 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cloudflare OctoRPKI是美国Cloudflare公司的Cloudflare平台的RPKI工具箱。 Cloudflare OctoRPKI v1.4.0之前版本存在安全漏洞，该漏洞源于使用rsync复制文件时使用的-a标志为0，这会强制rsync以root身份复制设置了suid位的二进制文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cloudflare | octorpki | 0 ~ v1.4.2 | - |
II. Public POCs for CVE-2021-3978
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same product: octorpki
- CVE-2022-3616
OctoRPKI crash when maximum iterations number is reached - CVE-2021-3912
OctoRPKI crashes when processing GZIP bomb returned via mali - CVE-2021-3911
Misconfigured IP address field in ROA leads to OctoRPKI cras - CVE-2021-3910
NUL character in ROA causes OctoRPKI to crash - CVE-2021-3909
Infinite open connection causes OctoRPKI to hang forever
Same vendor: Cloudflare
- CVE-2026-2836
Cache poisoning via insecure-by-default cache key - CVE-2026-2835
HTTP Request Smuggling via HTTP/1.0 and Transfer-Encoding Mi - CVE-2026-2833
HTTP Request Smuggling via Premature Upgrade - CVE-2026-1229
Incorrect calculation in CIRCL secp384r1 CombinedMult - CVE-2026-0933
OS Command Injection in `wrangler pages deploy`
Same weakness: CWE-269
- CVE-2026-42562
Plainpad: Privilege Escalation via Writable Admin Field in P - CVE-2026-41163
bubblewrap vulnerable to privilege escalation in setuid mode - CVE-2026-44987
SysReptor: Privilege Escalation from User Admin to Superuser - CVE-2026-42185
People: Privilege Escalation via Missing Role Ceiling in Mai - CVE-2026-40001
Local privilege escalation vulnerability in ZTE PROCESS Guar
V. Comments for CVE-2021-3978
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