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
CWE-ID CWE-288
Exploitation vector Local network
Public exploit N/A
Vulnerable software
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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

CVSSv3.1:

CVE-ID: CVE-2020-25660

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

Exploit availability: No

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 update from vendor's website.

Vulnerable software versions

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


CPE2.3 External links

http://git.alpinelinux.org/aports/commit/?id=f76faad409e96ef9dd005c5ee843d4b3bf597450

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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