Improper Authentication in LXS



| Updated: 2020-08-08
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-18641
CWE-ID CWE-287
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		LXS
Client/Desktop applications / Virtualization software

Vendor Linux Containers

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Improper Authentication

EUVDB-ID: #VU34830

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-18641

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

In LXC 2.0, many template scripts download code over cleartext HTTP, and omit a digital-signature check, before running it to bootstrap containers.

Mitigation

Install update from vendor's website.

Vulnerable software versions

LXS: 2.0.0

CPE2.3 External links

http://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1661447


Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted file.

Is there known malware, which exploits this vulnerability?

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



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