Cacti is an open source operational monitoring and fault management framework. Affected versions are subject to a SQL injection discovered in graph_view.php. Since guest users can access graph_view.php without authentication by default, if guest users are being utilized in an enabled state, there could be the potential for significant damage. Attackers may exploit this vulnerability, and there may be possibilities for actions such as the usurpation of administrative privileges or remote code execution. This issue has been addressed in version 1.2.25. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Max CVSS
9.8
EPSS Score
16.42%
Published
2023-09-05
Updated
2024-03-18

CVE-2022-46169

Known exploited
Public exploit
Cacti is an open source platform which provides a robust and extensible operational monitoring and fault management framework for users. In affected versions a command injection vulnerability allows an unauthenticated user to execute arbitrary code on a server running Cacti, if a specific data source was selected for any monitored device. The vulnerability resides in the `remote_agent.php` file. This file can be accessed without authentication. This function retrieves the IP address of the client via `get_client_addr` and resolves this IP address to the corresponding hostname via `gethostbyaddr`. After this, it is verified that an entry within the `poller` table exists, where the hostname corresponds to the resolved hostname. If such an entry was found, the function returns `true` and the client is authorized. This authorization can be bypassed due to the implementation of the `get_client_addr` function. The function is defined in the file `lib/functions.php` and checks serval `$_SERVER` variables to determine the IP address of the client. The variables beginning with `HTTP_` can be arbitrarily set by an attacker. Since there is a default entry in the `poller` table with the hostname of the server running Cacti, an attacker can bypass the authentication e.g. by providing the header `Forwarded-For: <TARGETIP>`. This way the function `get_client_addr` returns the IP address of the server running Cacti. The following call to `gethostbyaddr` will resolve this IP address to the hostname of the server, which will pass the `poller` hostname check because of the default entry. After the authorization of the `remote_agent.php` file is bypassed, an attacker can trigger different actions. One of these actions is called `polldata`. The called function `poll_for_data` retrieves a few request parameters and loads the corresponding `poller_item` entries from the database. If the `action` of a `poller_item` equals `POLLER_ACTION_SCRIPT_PHP`, the function `proc_open` is used to execute a PHP script. The attacker-controlled parameter `$poller_id` is retrieved via the function `get_nfilter_request_var`, which allows arbitrary strings. This variable is later inserted into the string passed to `proc_open`, which leads to a command injection vulnerability. By e.g. providing the `poller_id=;id` the `id` command is executed. In order to reach the vulnerable call, the attacker must provide a `host_id` and `local_data_id`, where the `action` of the corresponding `poller_item` is set to `POLLER_ACTION_SCRIPT_PHP`. Both of these ids (`host_id` and `local_data_id`) can easily be bruteforced. The only requirement is that a `poller_item` with an `POLLER_ACTION_SCRIPT_PHP` action exists. This is very likely on a productive instance because this action is added by some predefined templates like `Device - Uptime` or `Device - Polling Time`. This command injection vulnerability allows an unauthenticated user to execute arbitrary commands if a `poller_item` with the `action` type `POLLER_ACTION_SCRIPT_PHP` (`2`) is configured. The authorization bypass should be prevented by not allowing an attacker to make `get_client_addr` (file `lib/functions.php`) return an arbitrary IP address. This could be done by not honoring the `HTTP_...` `$_SERVER` variables. If these should be kept for compatibility reasons it should at least be prevented to fake the IP address of the server running Cacti. This vulnerability has been addressed in both the 1.2.x and 1.3.x release branches with `1.2.23` being the first release containing the patch.
Max CVSS
9.8
EPSS Score
96.53%
Published
2022-12-05
Updated
2023-07-11
CISA KEV Added
2023-02-16
Under certain ldap conditions, Cacti authentication can be bypassed with certain credential types.
Max CVSS
9.8
EPSS Score
0.45%
Published
2022-03-03
Updated
2023-02-12
graph_realtime.php in Cacti 1.2.8 allows remote attackers to execute arbitrary OS commands via shell metacharacters in a cookie, if a guest user has the graph real-time privilege.
Max CVSS
9.3
EPSS Score
94.88%
Published
2020-02-22
Updated
2023-02-28
Cacti 1.2.8 allows Remote Code Execution (by privileged users) via shell metacharacters in the Performance Boost Debug Log field of poller_automation.php. OS commands are executed when a new poller cycle begins. The attacker must be authenticated, and must have access to modify the Performance Settings of the product.
Max CVSS
9.0
EPSS Score
3.52%
Published
2020-01-20
Updated
2020-02-19
Cacti 1.1.27 allows remote authenticated administrators to conduct Remote Code Execution attacks by placing the Log Path under the web root, and then making a remote_agent.php request containing PHP code in a Client-ip header.
Max CVSS
9.0
EPSS Score
0.15%
Published
2017-11-08
Updated
2019-10-03
lib/rrd.php in Cacti 1.1.27 allows remote authenticated administrators to execute arbitrary OS commands via the path_rrdtool parameter in an action=save request to settings.php.
Max CVSS
9.0
EPSS Score
0.22%
Published
2017-11-07
Updated
2017-11-28
spikekill.php in Cacti before 1.1.16 might allow remote attackers to execute arbitrary code via the avgnan, outlier-start, or outlier-end parameter.
Max CVSS
9.8
EPSS Score
3.22%
Published
2017-08-01
Updated
2019-10-03
Cacti 0.8.7e and earlier allows remote authenticated administrators to gain privileges by modifying the "Data Input Method" for the "Linux - Get Memory Usage" setting to contain arbitrary commands.
Max CVSS
9.0
EPSS Score
5.81%
Published
2009-11-30
Updated
2018-10-10
9 vulnerabilities found
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