SB2021112302 - Debian update for salt
Published: November 23, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 12 secuirty vulnerabilities.
1) Exposure of Resource to Wrong Sphere (CVE-ID: CVE-2021-21996)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the way Salt download URL. A local user with control over the file source URL and its source_hash URL can gain full file system access as root on a salt minion.
2) Command Injection (CVE-ID: CVE-2021-31607)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to command injection in the snapper module. A local user can escalate privileges on a minion.
3) Inclusion of Sensitive Information in Log Files (CVE-ID: CVE-2021-25284)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to salt.modules.cmdmod stores sensitive information, such as passwords into the /var/log/salt/minion file. A local user can read the log files and gain access to sensitive data.
4) Code Injection (CVE-ID: CVE-2021-25283)
The vulnerability allows a user attacker to perform server-side template injection attacks.
The vulnerability exists due to improper input validation. A remote user can send a specially crafted request and execute arbitrary code on the target system via the SaltAPI fix directory traversal in wheel.pillar_roots.write (described in #VU50980).
5) Path traversal (CVE-ID: CVE-2021-25282)
The vulnerability allows a remote user to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences within the salt.wheel.pillar_roots.write method. A remote user can send a specially crafted HTTP request and read arbitrary files on the system.
6) Improper access control (CVE-ID: CVE-2021-25281)
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. The salt-api does not honor eauth credentials for the wheel_async client. A remote attacker can remotely run any wheel modules on the master.
7) OS Command Injection (CVE-ID: CVE-2021-3197)
The vulnerability allows a remote user to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation within the salt-api ssh client. A remote attacker can include the ProxyCommand in an argument, or via ssh_options provided in an API request and execute arbitrary commands on the system.
8) Command Injection (CVE-ID: CVE-2021-3148)
The vulnerability allows a remote user to execute arbitrary commands within the application.
The vulnerability exists due to improper input validation, related to handling single and double quotes, within the salt.utils.thin.gen_thin() function in salt/utils/thin.py. A remote user can send a specially crafted HTTP request to the SaltAPI and execute arbitrary commands.
9) Improper Authentication (CVE-ID: CVE-2021-3144)
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error in when processing authentication requests for expired eauth tokens. A remote attacker can re-use one more time expired eauth tokens to run command against the salt master or minions.
10) Improper Certificate Validation (CVE-ID: CVE-2020-35662)
The vulnerability allows a remote attacker to perform MitM attack.
The vulnerability exists due to improper TLS certificate validation. A remote attacker can force the application to accept an untrusted certificate and perform MitM attack.
11) Improper Certificate Validation (CVE-ID: CVE-2020-28972)
The vulnerability allows a remote attacker to perform MitM attack.
The vulnerability exists due to absent validation of SSL/TLS certificates. A remote attacker can perform MitM attack.
12) Security restrictions bypass (CVE-ID: CVE-2020-28243)
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions, which leads to security restrictions bypass and privilege escalation. A remote user can create files in any non-blacklisted directory via a command injection in a process name.
Remediation
Install update from vendor's website.