SB2020050705 - Debian update for salt
Published: May 7, 2020 Updated: March 22, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) OS Command Injection (CVE-ID: CVE-2019-17361)
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation the salt-api NET API with the ssh client enabled. A remote unauthenticated attacker with network access to the API endpoint can pass specially crafted data to the application and execute arbitrary OS commands on the salt-api host.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
2) Improper Authentication (CVE-ID: CVE-2020-11651)
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to the salt-master process "ClearFuncs" class does not properly validate method calls. A remote non-authenticated attacker can bypass authentication process and gain access some methods without authentication. These methods can be used to retrieve user tokens from the salt master and/or run arbitrary commands on salt minion as root.
Note: this vulnerability is being actively exploited in the wild.
3) Path traversal (CVE-ID: CVE-2020-11652)
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in the salt-master process ClearFuncs class. A remote authenticated attacker can send a specially crafted HTTP request and read arbitrary files on the system.
Remediation
Install update from vendor's website.