CVE-2023-28848— CSRF protection on user_oidc login returned the expected token in case of an error
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I. Basic Information for CVE-2023-28848
Vulnerability Information
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Vulnerability Title
CSRF protection on user_oidc login returned the expected token in case of an error
Source: NVD (National Vulnerability Database)
Vulnerability Description
user_oidc is the OIDC connect user backend for Nextcloud, an open source collaboration platform. A vulnerability in versions 1.0.0 until 1.3.0 effectively allowed an attacker to bypass the state protection as they could just copy the expected state token from the first request to their second request. Users should upgrade user_oidc to 1.3.0 to receive a patch for the issue. No known workarounds are available.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨站请求伪造(CSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
user_oidc 跨站请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nextcloud user_oidc是德国Nextcloud公司的一个应用程序 user_oidc 1.0.0版本至1.3.0版本存在跨站请求伪造漏洞，该漏洞源于应用程序将预期的状态令牌从第一个请求复制到第二个请求。
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 | >= 1.0.0, < 1.3.0 | - |
II. Public POCs for CVE-2023-28848
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://hackerone.com/reports/1878381x_refsource_MISC
- https://github.com/nextcloud/user_oidc/pull/580x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2023-28848
Same Patch Batch · nextcloud · 2023-04-04 · 5 CVEs total
| CVE-2023-28999 | 6.9 MEDIUM | Nextcloud: Lack of authenticity of metadata keys allows a malicious server to gain access |
| CVE-2023-28998 | 6.7 MEDIUM | Nextcloud Desktop client misbehaves with E2EE when the server returns empty list of metada |
| CVE-2023-28997 | 6.7 MEDIUM | Nextcloud Desktop: Initialization vector reuse in E2EE allows malicious server admin to br |
| CVE-2023-29000 | 5.4 MEDIUM | Nextcloud Desktop client does not verify received singed certificate in end-to-end encrypt |
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