Vulnerability Report

CVE-2023-39954

Title: Impersonation via Database Snapshot in user_oidc

Impersonation

Proof Of Concept

No public PoC currently indexed for CVE-2023-39954.

CWE Category CWE-311
Published Date Aug 10, 2023
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 3.8 CVSS v3.1
Exploit Probability (EPSS)
0.44%

Vulnerability Summary

CVE-2023-39954: 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, an attacker that obtained at least read access to a snapshot of the database can impersonate the Nextcloud server towards linked servers. user_oidc 1.3.3 contains a patch. No known workarounds are available.

Impacted Vendors

N
nextcloud 1

Reference Links

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-3f92-5c8p-f6gq https://github.com/nextcloud/user_oidc/pull/636 https://hackerone.com/reports/1994328 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-3f92-5c8p-f6gq https://github.com/nextcloud/user_oidc/pull/636 https://hackerone.com/reports/1994328
CVSS v3.1
Source Entity [email protected]
Severity LOW
3.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
CVSS v3.1
Source Entity [email protected]
Severity HIGH
8.1
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2023-39954 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

Affected Stack

No specific products linked.