Security Vulnerabilities fixed in Salt Minion ADVISORY: 2022-03-28

Description

An issue was discovered in SaltStack Salt in versions before 3002.8, 3003.4, 3004.1. Salt Masters do not sign pillar data with the minions public key, which can result in attackers substituting arbitrary pillar data. A minion authentication denial of service can cause a MiTM attacker to force a minion process to stop by impersonating a master. Job publishes and file server replies are susceptible to replay attacks, which can result in an attacker replaying job publishes causing minions to run old jobs. File server replies can also be re-played. A sufficient craft attacker could gain root access on minion under certain scenarios. When configured as a Master-of-Masters, with a publisher_acl, if a user configured in the publisher_acl targets any minion connected to the Syndic, the Salt Master incorrectly interpreted no valid targets as valid, allowing configured users to target any of the minions connected to the syndic with their configured commands. This requires a syndic master combined with publisher_acl configured on the Master-of-Masters, allowing users specified in the publisher_acl to bypass permissions, publishing authorized commands to any configured minion.

Affected Applications

Salt Minion

CVE References

CVE-2022-22934 CVE-2022-22935 CVE-2022-22936 CVE-2022-22941

Other References

https://saltproject.io/security_announcements/salt-security-advisory-release/