Authentication bypass using an alternate path or channel in ceph (Alpine package)

Published: 2020-12-10
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-25660
Exploitation vector Local network
Public exploit N/A
Vulnerable software
ceph (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Authentication bypass using an alternate path or channel

EUVDB-ID: #VU48684

Risk: Medium


CVE-ID: CVE-2020-25660

CWE-ID: CWE-288 - Authentication Bypass Using an Alternate Path or Channel

Exploit availability: No


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.


Install update from vendor's website.

Vulnerable software versions

ceph (Alpine package): 14.2.1-r0 - 14.2.9-r1

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?