Vulnerability Report

CVE-2023-49105

Title: Owncloud Owncloud Server Auth Bypass

Auth Bypass

Proof Of Concept

PoC Available for CVE-2023-49105

CWE Category CWE-287
Published Date Nov 21, 2023
Modified Date Apr 02, 2025
Exploit Status Available
Score 9.8 CVSS v3.1
Exploit Probability (EPSS)
89.60%

Vulnerability Summary

CVE-2023-49105: An issue was discovered in ownCloud owncloud/core before 10.13.1. An attacker can access, modify, or delete any file without authentication if the username of a victim is known, and the victim has no signing-key configured. This occurs because pre-signed URLs can be accepted even when no signing-key is configured for the owner of the files. The earliest affected version is 10.6.0.

Impacted Vendors

O
owncloud 1

Reference Links

https://owncloud.com/security-advisories/webdav-api-authentication-bypass-using-pre-signed-urls/ https://owncloud.org/security https://owncloud.com/security-advisories/webdav-api-authentication-bypass-using-pre-signed-urls/ https://owncloud.org/security
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.8
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:N/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.8
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:N/UI:N/S:U/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2023-49105 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/ambionics/owncloud-exploits
View Code
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:N/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.