Bug 1214183 (CVE-2023-39953)

Summary:	VUL-0: CVE-2023-39953: nextcloud: missing verification in OIDC allows man in the middle attacks
Product:	[openSUSE] openSUSE Distribution	Reporter:	Carlos López <carlos.lopez>
Component:	Security	Assignee:	Eric Schirra <ecsos>
Status:	RESOLVED INVALID	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P5 - None
Version:	Leap 15.4
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/374977/
Whiteboard:
Found By:	---	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Carlos López 2023-08-11 08:58:46 UTC

CVE-2023-39953

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.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-39953
https://bugzilla.redhat.com/show_bug.cgi?id=2231145
https://www.cve.org/CVERecord?id=CVE-2023-39953
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xx3h-v363-q36j
https://github.com/nextcloud/user_oidc/pull/642
https://hackerone.com/reports/2021684

Comment 1 Carlos López 2023-08-11 09:04:49 UTC

user_oidc is not in openSUSE, closing.