Authentication bypass in ownCloud WebDAV API



| Updated: 2023-12-19
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-49105
CWE-ID CWE-287
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 ownCloud Server
Web applications / Modules and components for CMS

Vendor ownCloud

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Improper Authentication

EUVDB-ID: #VU83563

Risk: High

CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2023-49105

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in WebDAV API. A remote attacker can bypass authentication process using Pre-Signed URLs and compromise the affected system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

ownCloud Server: 10.6.0 - 10.13.0

CPE2.3 External links

https://owncloud.com/security-advisories/webdav-api-authentication-bypass-using-pre-signed-urls/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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