Security restrictions bypass in SaltStack

1) Security restrictions bypass

EUVDB-ID: #VU12278

Risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7893

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows an adjacent unauthenticated attacker to bypass security restrictions on the target system.

The weakness exists due to an unspecified condition related to the relationship between a salt-master server and salt-minions clients. An adjacent attacker can bypass security restrictions and impersonate a salt-masterserver in the target environment.

Mitigation

Update to version 2016.3.6 or later.

Vulnerable software versions

Salt: 2016.3.0 - 2016.3.5

External links

http://docs.saltstack.com/en/2017.7/topics/releases/2016.3.6.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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