CVE-2021-32734— File path disclosure of shared files in Nextcloud Text application
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I. Basic Information for CVE-2021-32734
Vulnerability Information
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Vulnerability Title
File path disclosure of shared files in Nextcloud Text application
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, the Nextcloud Text application shipped with Nextcloud Server returned verbatim exception messages to the user. This could result in a full path disclosure on shared files. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. As a workaround, one may disable the Nextcloud Text application in Nextcloud Server app settings.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过错误消息导致的信息暴露
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nextcloud 信息泄露漏洞
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之前的版本中存在信息泄露漏洞，该漏洞可能导致共享文件的完整路径公开。
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-2021-32734
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://hackerone.com/reports/1246721x_refsource_MISC
- https://github.com/nextcloud/text/pull/1695x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-32734
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-2021-32725 | 3.5 LOW | Default share permissions not respected for federated reshares |
| 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 |
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