CVE-2022-39334— nextcloudcmd incorrectly trusts bad TLS certificates
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I. Basic Information for CVE-2022-39334
Vulnerability Information
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Vulnerability Title
nextcloudcmd incorrectly trusts bad TLS certificates
Source: NVD (National Vulnerability Database)
Vulnerability Description
Nextcloud also ships a CLI utility called nextcloudcmd which is sometimes used for automated scripting and headless servers. Versions of nextcloudcmd prior to 3.6.1 would incorrectly trust invalid TLS certificates, which may enable a Man-in-the-middle attack that exposes sensitive data or credentials to a network attacker. This affects the CLI only. It does not affect the standard GUI desktop Nextcloud clients, and it does not affect the Nextcloud server.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
证书验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Nextcloud 信任管理问题漏洞
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 desktop 3.6.1之前版本存在信任管理问题漏洞，该漏洞源于会错误地信任无效的TLS证书，用户在本地运行nextcloudcmd CLI命令的情况下，有可能出现中间人攻击。
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 | < 3.6.1 | - |
II. Public POCs for CVE-2022-39334
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · nextcloud · 2022-11-25 · 8 CVEs total
| CVE-2022-39331 | 4.6 MEDIUM | Cross-site Scripting (XSS) in Nexcloud Desktop Client |
| CVE-2022-39332 | 4.6 MEDIUM | Cross-site scripting (XSS) in Nextcloud Desktop Client |
| CVE-2022-39333 | 4.6 MEDIUM | Cross-site scripting (XSS) in Nextcloud Desktop Client |
| CVE-2022-39339 | 4.3 MEDIUM | Cleartext Transmission of Sensitive Information in user_oidc |
| CVE-2022-39338 | 3.5 LOW | Stored cross site scripting (XSS) vulnerability via Authorization Endpoint in user_oidc |
| CVE-2022-39346 | 3.5 LOW | Missing length validation of user displayname in nextcloud server |
| CVE-2022-41926 | 3.3 LOW | Nextcloud Talk Android broadcast incorrect permission handling |
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Same weakness: CWE-295
V. Comments for CVE-2022-39334
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