FreshPorts - VuXML

puppet -- multiple vulnerabilities

Arbitrary file read on the puppet master from authenticated clients (high). It is possible to construct an HTTP get request from an authenticated client with a valid certificate that will return the contents of an arbitrary file on the Puppet master that the master has read-access to.

Arbitrary file delete/D.O.S on Puppet Master from authenticated clients (high). Given a Puppet master with the "Delete" directive allowed in auth.conf for an authenticated host, an attacker on that host can send a specially crafted Delete request that can cause an arbitrary file deletion on the Puppet master, potentially causing a denial of service attack. Note that this vulnerability does *not* exist in Puppet as configured by default.

Insufficient input validation for agent hostnames (low). An attacker could trick the administrator into signing an attacker's certificate rather than the intended one by constructing specially crafted certificate requests containing specific ANSI control sequences. It is possible to use the sequences to rewrite the order of text displayed to an administrator such that display of an invalid certificate and valid certificate are transposed. If the administrator signs the attacker's certificate, the attacker can then man-in-the-middle the agent.

gt 2.6.* lt 2.6.17

Puppet Labs reports:

By using the `resource_type` service, an attacker could cause puppet to load arbitrary Ruby files from the puppet master node's file system. While this behavior is not enabled by default, `auth.conf` settings could be modified to allow it. The exploit requires local file system access to the Puppet Master.

Puppet Module Tool (PMT) did not correctly control permissions of modules it installed, instead transferring permissions that existed when the module was built.

ge 2.7 lt 2.7.23

ge 3.0 lt 3.2.4

puppet -- multiple vulnerabilities

Arbitrary file read on the puppet master from authenticated clients (high). It is possible to construct an HTTP get request from an authenticated client with a valid certificate that will return the contents of an arbitrary file on the Puppet master that the master has read-access to.

Arbitrary file delete/D.O.S on Puppet Master from authenticated clients (high). Given a Puppet master with the "Delete" directive allowed in auth.conf for an authenticated host, an attacker on that host can send a specially crafted Delete request that can cause an arbitrary file deletion on the Puppet master, potentially causing a denial of service attack. Note that this vulnerability does *not* exist in Puppet as configured by default.

The last_run_report.yaml is world readable (medium). The most recent Puppet run report is stored on the Puppet master with world-readable permissions. The report file contains the context diffs of any changes to configuration on an agent, which may contain sensitive information that an attacker can then access. The last run report is overwritten with every Puppet run.

Arbitrary file read on the Puppet master by an agent (medium). This vulnerability is dependent upon vulnerability "last_run_report.yml is world readable" above. By creating a hard link of a Puppet-managed file to an arbitrary file that the Puppet master can read, an attacker forces the contents to be written to the puppet run summary. The context diff is stored in last_run_report.yaml, which can then be accessed by the attacker.

Insufficient input validation for agent hostnames (low). An attacker could trick the administrator into signing an attacker's certificate rather than the intended one by constructing specially crafted certificate requests containing specific ANSI control sequences. It is possible to use the sequences to rewrite the order of text displayed to an administrator such that display of an invalid certificate and valid certificate are transposed. If the administrator signs the attacker's certificate, the attacker can then man-in-the-middle the agent.

Agents with certnames of IP addresses can be impersonated (low). If an authenticated host with a certname of an IP address changes IP addresses, and a second host assumes the first host's former IP address, the second host will be treated by the puppet master as the first one, giving the second host access to the first host's catalog. Note: This will not be fixed in Puppet versions prior to the forthcoming 3.x. Instead, with this announcement IP-based authentication in Puppet < 3.x is deprecated.

gt 2.7.* lt 2.7.18

Multiple vulnerabilities exist in puppet that can result in arbitrary code execution, arbitrary file read access, denial of service, and arbitrary file write access. Please review the details in each of the CVEs for additional information.

gt 2.7.* lt 2.7.12_1

Puppet Developers report:

When making REST api calls, the puppet master takes YAML from an untrusted client, deserializes it, and then calls methods on the resulting object. A YAML payload can be crafted to cause the deserialization to construct an instance of any class available in the ruby process, which allows an attacker to execute code contained in the payload.

ge 2.7 lt 2.7.22

ge 3.0 lt 3.2.2

Moses Mendoza reports:

A vulnerability found in Puppet could allow an authenticated client to cause the master to execute arbitrary code while responding to a catalog request. Specifically, in order to exploit the vulnerability, the puppet master must be made to invoke the 'template' or 'inline_template' functions during catalog compilation.

A vulnerability found in Puppet could allow an authenticated client to connect to a puppet master and perform unauthorized actions. Specifically, given a valid certificate and private key, an agent could retrieve catalogs from the master that it is not authorized to access or it could poison the puppet master's caches for any puppet-generated data that supports caching such as catalogs, nodes, facts, and resources. The extent and severity of this vulnerability varies depending on the specific configuration of the master: for example, whether it is using storeconfigs or not, which version, whether it has access to the cache or not, etc.

A vulnerability has been found in Puppet which could allow authenticated clients to execute arbitrary code on agents that have been configured to accept kick connections. This vulnerability is not present in the default configuration of puppet agents, but if they have been configured to listen for incoming connections ('listen=true'), and the agent's auth.conf has been configured to allow access to the `run` REST endpoint, then a client could construct an HTTP request which could execute arbitrary code. The severity of this issue is exacerbated by the fact that puppet agents typically run as root.

A vulnerability has been found in Puppet that could allow a client negotiating a connection to a master to downgrade the master's SSL protocol to SSLv2. This protocol has been found to contain design weaknesses. This issue only affects systems running older versions (pre 1.0.0) of openSSL. Newer versions explicitly disable SSLv2.

A vulnerability found in Puppet could allow unauthenticated clients to send requests to the puppet master which would cause it to load code unsafely. While there are no reported exploits, this vulnerability could cause issues like those described in Rails CVE-2013-0156. This vulnerability only affects puppet masters running Ruby 1.9.3 and higher.

This vulnerability affects puppet masters 0.25.0 and above. By default, auth.conf allows any authenticated node to submit a report for any other node. This can cause issues with compliance. The defaults in auth.conf have been changed.

ge 3.0 lt 3.1.1

ge 2.7 lt 2.7.21