PT-2023-22005 · Nextcloud · User Oidc

Mikaelgundersen · Published 2023-04-04 · Updated 2023-04-10 · CVE-2023-28848

Positive Technologies (AI Summary)

CVSS v3.1

4.8

Medium

Base vector

AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions user oidc versions 1.0.0 through 1.3.0

Description A vulnerability in user oidc, the OIDC connect user backend for Nextcloud, an open source collaboration platform, allowed an attacker to bypass the state protection. This was possible because an attacker could copy the expected state token from the first request to their second request.

Recommendations For versions 1.0.0 through 1.3.0, upgrade user oidc to version 1.3.0 to receive a patch for the issue.

Exploit

Fix

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

CVE-2023-28848

GHSA-52HV-XW32-WF7F

Affected Products

User Oidc

References · 7

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28848.json · Exploit
• https://github.com/nextcloud/user_oidc/pull/580 · Vendor Advisory
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-52hv-xw32-wf7f · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-28848 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-28848 · Security Note
• https://t.me/cibsecurity/61397 · Telegram Post
• https://hackerone.com/reports/1878381 · Note