#VU48684 Authentication bypass using an alternate path or channel


Published: 2020-11-23 | Updated: 2020-11-27

Vulnerability identifier: #VU48684

Vulnerability risk: Medium

CVSSv3.1:

CVE-ID: CVE-2020-25660

CWE-ID: CWE-288

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Ceph
Server applications / Other server solutions

Vendor: Red Hat Inc.

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists with in the implementation of the Cephx authentication protocol. A remote attacker with access to the Ceph cluster network can intercept authentication packets and perform  replay attacks in Nautilus.

The vulnerability affects msgr2 protocol only and is basically a reintroduction of previously patched vulnerability #VU14542.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Ceph: 14.0.0 - 15.2.5


CPE

External links
http://bugzilla.redhat.com/show_bug.cgi?id=1890354
http://ceph.io/community/v15-2-6-octopus-released/
http://ceph.io/releases/v14-2-14-nautilus-released/


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?


Latest bulletins with this vulnerability