CVE-2023-39953— Nextcloud user_oidc 安全漏洞
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I. CVE-2023-39953の基本情報
脆弱性情報
脆弱性についてご質問がありますか？Shenlongの分析が参考になるかご確認ください！
Shenlongの10の質問を表示 ↗ 高度な大規模言語モデル技術を使用していますが、出力には不正確または古い情報が含まれる可能性があります。Shenlongはデータの正確性を確保するよう努めていますが、実際の状況に基づいて検証・判断してください。
脆弱性タイトル
Issuer not verified from obtained token in user_oidc
ソース: NVD (National Vulnerability Database)
脆弱性説明
user_oidc provides the OIDC connect user backend for Nextcloud, an open-source cloud platform. Starting in version 1.0.0 and prior to version 1.3.3, missing verification of the issuer would have allowed an attacker to perform a man-in-the-middle attack returning corrupted or known token they also have access to. user_oidc 1.3.3 contains a patch. No known workarounds are available.
ソース: NVD (National Vulnerability Database)
CVSS情報
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
ソース: NVD (National Vulnerability Database)
脆弱性タイプ
认证算法的不正确实现
ソース: NVD (National Vulnerability Database)
脆弱性タイトル
Nextcloud user_oidc 安全漏洞
ソース: CNNVD (China National Vulnerability Database)
脆弱性説明
Nextcloud user_oidc是德国Nextcloud公司的一个应用程序 Nextcloud user_oidc 1.0.0版本至1.3.3之前版本存在安全漏洞，该漏洞源于缺少对发行者的验证。
ソース: CNNVD (China National Vulnerability Database)
CVSS情報
N/A
ソース: CNNVD (China National Vulnerability Database)
脆弱性タイプ
N/A
ソース: CNNVD (China National Vulnerability Database)
影響を受ける製品
| ベンダー | プロダクト | 影響を受けるバージョン | CPE | 購読 |
|---|---|---|---|---|
| nextcloud | security-advisories | >= 1.0.0, < 1.3.3 | - |
II. CVE-2023-39953の公開POC
| # | POC説明 | ソースリンク | Shenlongリンク |
|---|
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公開POCは見つかりませんでした。
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- https://hackerone.com/reports/2021684x_refsource_MISC
- https://github.com/nextcloud/user_oidc/pull/642x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2023-39953
Same Patch Batch · nextcloud · 2023-08-10 · 10 CVEs total
| CVE-2023-39963 | 8.1 HIGH | Missing password confirmation when creating app passwords |
| CVE-2023-39962 | 7.7 HIGH | Users can delete external storage mount points |
| CVE-2023-39952 | 6.5 MEDIUM | Advanced permissions not respected when copying entire group folders |
| CVE-2023-39958 | 5.8 MEDIUM | Missing brute force protection on password reset token OAuth2 API controller |
| CVE-2023-39954 | 3.8 LOW | user_oidc app stores client secret unencrypted in database |
| CVE-2023-39955 | 3.5 LOW | Notes attachment render HTML in preview mode |
| CVE-2023-39959 | 3.5 LOW | Existence of calendars and address books can be checked by unauthenticated users |
| CVE-2023-39961 | 3.5 LOW | Text does not respect "Allow download" permissions |
| CVE-2023-39957 | Path traversal allows tricking the Talk Android app into writing files into it's root dire |
IV. 関連脆弱性
同じ製品: security-advisories
- CVE-2026-28272
Kiteworks Email Protection Gateway has a Cross-site Scriptin - CVE-2026-28271
Kiteworks Core is vulnerable to Server-Side Request Forgery - CVE-2026-28270
Kiteworks Core has an Unrestricted Upload of File with Dange - CVE-2026-28269
Kiteworks Core has an OS Command Injection - CVE-2025-66558
Nextcloud Twofactor WebAuthn app was updated based on public
同じベンダー: nextcloud
- CVE-2025-66558
Nextcloud Twofactor WebAuthn app was updated based on public - CVE-2025-66556
Nextcloud talk allows participants to blindly delete poll dr - CVE-2025-66554
Nextcloud Contacts vulnerable to Stored XSS in contacts app - CVE-2025-66549
Nextcloud Desktop discloses information when attempting to l - CVE-2025-66545
Nextcloud Groupfolders users with read-only permissions for
同じ弱点: CWE-303
- CVE-2026-33190
CoreDNS TSIG authentication bypass on encrypted DNS transpor - CVE-2026-27656
Account Takeover via Substring Matching in OpenID Connect Au - CVE-2026-32953
Tillitis: TKey Client has an Error in Protocol Implementatio - CVE-2026-29515
MiCode FileExplorer SwiFTP Server Authentication Bypass - CVE-2019-25436
Sricam DeviceViewer 3.12.0.1 Password Change Security Bypass
V. CVE-2023-39953へのコメント
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