Vulnerability identifier: #VU82112

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-43040

CWE-ID: CWE-285

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Ceph
Server applications / Other server solutions

Vendor: Red Hat Inc.

Description

The vulnerability allows a remote user to bypass implemented security restrictions.

The vulnerability exists due to improper authorization in radogw API gateway in Ceph when processing POST requests. A remote unprivileged user can write to any bucket(s) accessible by a given key if a POST form-data contains a key called "bucket" with a value matching the bucket's name used to sign the request.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Ceph: 17.0.0 - 17.2.5

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External links
http://bugzilla.redhat.com/show_bug.cgi?id=2216855

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.