CVE-2021-32725— Default share permissions not respected for federated reshares
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I. Basic Information for CVE-2021-32725
Vulnerability Information
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Vulnerability Title
Default share permissions not respected for federated reshares
Source: NVD (National Vulnerability Database)
Vulnerability Description
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, default share permissions were not being respected for federated reshares of files and folders. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. There are no known workarounds.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
不安全的继承权限
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nextcloud 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nextcloud是德国Nextcloud公司的一套开源的自托管文件同步和共享的通信应用平台。 Nextcloud Server在19.0.13、20.011和21.0.3之前的版本中存在权限许可和访问控制问题漏洞，该漏洞源于文件和文件夹的联邦共享不尊重默认共享权限。
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 |
|---|---|---|---|---|
| nextcloud | security-advisories | < 19.0.13 | - |
II. Public POCs for CVE-2021-32725
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://github.com/nextcloud/server/pull/26946x_refsource_MISC
- https://hackerone.com/reports/1178320x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-32725
Same Patch Batch · nextcloud · 2021-07-12 · 14 CVEs total
| CVE-2021-32688 | 8.8 HIGH | Application specific tokens can change their own scope |
| CVE-2021-32689 | 8.1 HIGH | Nextcloud Talk not properly disassociating users from chats after account deletion |
| CVE-2021-32726 | 7.1 HIGH | Webauthn tokens not removed after user has been deleted |
| CVE-2021-32727 | 5.7 MEDIUM | End-to-end encryption device setup did not verify public key |
| CVE-2021-32741 | 5.3 MEDIUM | Lack of ratelimit on public share link mount endpoint |
| CVE-2021-32705 | 5.3 MEDIUM | Lack of ratelimit on public DAV endpoint |
| CVE-2021-32703 | 5.3 MEDIUM | Lack of ratelimit on shareinfo endpoint |
| CVE-2021-32733 | 4.8 MEDIUM | XSS in Nextcloud Text application |
| CVE-2021-32707 | 4.3 MEDIUM | Bypass of image blocking in Nextcloud Mail |
| CVE-2021-32678 | 3.7 LOW | Ratelimit not applied on OCS API responses |
| CVE-2021-32679 | 3.5 LOW | Filenames not escaped by default in controllers using DownloadResponse |
| CVE-2021-32680 | 3.3 LOW | Audit log is not properly logging unsetting of share expiration date |
| CVE-2021-32734 | 3.1 LOW | File path disclosure of shared files in Nextcloud Text application |
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