Vulnerabilidades

Salt contains an authentication protocol version downgrade weakness that can allow a malicious minion to bypass newer authentication/security features by using an older request payload format, enabling minion impersonation and circumventing protections introduced in response to prior issues.

Salt's junos execution module contained an unsafe YAML decode/load usage. A specially crafted YAML payload processed by the junos module could lead to unintended code execution under the context of the Salt process.

Directory traversal vulnerability in recv_file method allows arbitrary files to be written to the master cache directory.

Worker process denial of service through file read operation. .A vulnerability exists in the Master's “pub_ret” method which is exposed to all minions. The un-sanitized input value “jid” is used to construct a path which is then opened for reading. An attacker could exploit this vulnerabilities by attempting to read…

File contents overwrite the VirtKey class is called when “on-demand pillar” data is requested and uses un-validated input to create paths to the “pki directory”. The functionality is used to auto-accept Minion authentication keys based on a pre-placed “authorization file” at a specific location and is present in the…

Arbitrary event injection on Salt Master. The master's "_minion_event" method can be used by and authorized minion to send arbitrary events onto the master's event bus.

Directory traversal attack in minion file cache creation. The master's default cache is vulnerable to a directory traversal attack. Which could be leveraged to write or overwrite 'cache' files outside of the cache directory.

An attacker with access to a minion key can exploit the 'on demand' pillar functionality with a specially crafted git url which could cause and arbitrary command to be run on the master with the same privileges as the master process.

Minion event bus authorization bypass. An attacker with access to a minion key can craft a message which may be able to execute a job on other minions (>= 3007.0).

The salt.auth.pki module does not properly authenticate callers. The "password" field contains a public certificate which is validated against a CA certificate by the module. This is not pki authentication, as the caller does not need access to the corresponding private key for the authentication attempt to be…

Salt's request server is vulnerable to replay attacks when not using a TLS encrypted transport.

Multiple methods in the salt master skip minion token validation. Therefore a misbehaving minion can impersonate another minion.

The Salt-SSH pre-flight option copies the script to the target at a predictable path, which allows an attacker to force Salt-SSH to run their script. If an attacker has access to the target VM and knows the path to the pre-flight script before it runs they can ensure Salt-SSH runs their script with the privileges of…

A specially crafted url can be created which leads to a directory traversal in the salt file server. A malicious user can read an arbitrary file from a Salt master’s filesystem.

Syndic cache directory creation is vulnerable to a directory traversal attack in salt project which can lead a malicious attacker to create an arbitrary directory on a Salt master.

Git Providers can read from the wrong environment because they get the same cache directory base name in Salt masters prior to 3005.2 or 3006.2. Anything that uses Git Providers with different environments can get garbage data or the wrong data, which can lead to wrongful data disclosure, wrongful executions, data…

Salt masters prior to 3005.2 or 3006.2 contain a DOS in minion return. After receiving several bad packets on the request server equal to the number of worker threads, the master will become unresponsive to return requests until restarted.

Buffer Overflow vulnerability in Saltstack v.3003 and before allows attacker to execute arbitrary code via the func variable in salt/salt/modules/status.py file. NOTE: this is disputed by third parties because an attacker cannot influence the eval input

An issue was discovered in SaltStack Salt in versions before 3002.9, 3003.5, 3004.2. PAM auth fails to reject locked accounts, which allows a previously authorized user whose account is locked still run Salt commands when their account is locked. This affects both local shell accounts with an active session and…

An issue was discovered in SaltStack Salt in versions before 3002.8, 3003.4, 3004.1. 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…

An issue was discovered in SaltStack Salt in versions before 3002.8, 3003.4, 3004.1. 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…

An issue was discovered in SaltStack Salt in versions before 3002.8, 3003.4, 3004.1. A minion authentication denial of service can cause a MiTM attacker to force a minion process to stop by impersonating a master.

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 minion’s public key, which can result in attackers substituting arbitrary pillar data.

An issue was discovered in SaltStack Salt before 3003.3. The salt minion installer will accept and use a minion config file at C:\salt\conf if that file is in place before the installer is run. This allows for a malicious actor to subvert the proper behaviour of the given minion software.

An issue was discovered in SaltStack Salt before 3003.3. A user who has control of the source, and source_hash URLs can gain full file system access as root on a salt minion.