ILIAS deserialises stored session data for an unauthenticated caller. The Shibboleth back-channel endpoint at components/ILIAS/AuthShibboleth/resources/shiblogout.php runs in a context that ilInitialisation exempts from authentication, and its logout-notification handler locates the session to terminate by reading every live row of the session table and passing each row's stored data to a hand-written parser that calls unserialize without restricting which classes may be constructed. Any serialised object present in any session row is therefore instantiated on behalf of an anonymous request, and object destructors run when those objects are discarded. A serialised object can be placed into a session row without logging in, because the LTI authentication entry point stores request parameters into the session and is reachable on a path the same initialisation code exempts from authentication. A class bundled with the application writes a JSON-encoded structure to a file named by one of its own properties when it is destroyed, which places attacker-controlled content at an attacker-chosen path below the web root and results in code execution as the web server user. Versions 9.22, 10.10 and 11.3 remove the endpoint's logout-notification implementation.

A vulnerability was identified in ILIAS Learning Management System 11.0. This issue affects the function ilTrQuery::executeQueries of the file components/ILIAS/Tracking/classes/class.ilTrQuery.php of the component Learning Progress Tracking. Such manipulation of the argument trouptablenav leads to sql injection. It is possible to launch the attack remotely. The exploit is publicly available and might be used. It is suggested to upgrade the affected component. This issue was independently identified and fixed internally by the vendor's own security team ahead of this report.

ILIAS Learning Management System 4.3 contains a server-side request forgery vulnerability that allows attackers to read local files through portfolio PDF export functionality. Attackers can inject a script that uses XMLHttpRequest to retrieve local file contents when the portfolio is exported to PDF.

A vulnerability has been found in ILIAS up to 8.23/9.13/10.1. This affects the function unserialize of the component Base64 Decoding Handler. Such manipulation of the argument fsettings leads to deserialization. It is possible to launch the attack remotely. Upgrading to version 8.24, 9.14 and 10.2 is able to mitigate this issue. It is advisable to upgrade the affected component.

A flaw has been found in ILIAS up to 8.23/9.13/10.1. Affected by this issue is the function unserialize of the component Test Import. This manipulation causes deserialization. It is possible to initiate the attack remotely. Upgrading to version 8.24, 9.14 and 10.2 can resolve this issue. Upgrading the affected component is advised.

A vulnerability was detected in ILIAS up to 8.23/9.13/10.1. Affected by this vulnerability is an unknown functionality of the component Certificate Import Handler. The manipulation results in Remote Code Execution. The attack may be performed from remote. Upgrading to version 8.24, 9.14 and 10.2 addresses this issue. It is recommended to upgrade the affected component.

A Stored Cross-site Scripting (XSS) vulnerability in the "Import of organizational units and title of organizational unit" feature in ILIAS 7.20 to 7.29 and ILIAS 8.4 to 8.10 as well as ILIAS 9.0 allows remote authenticated attackers with administrative privileges to inject arbitrary web script or HTML via XML file upload.

A Stored Cross-site Scripting (XSS) vulnerability in ILIAS 7 before 7.30 and ILIAS 8 before 8.11 allows remote authenticated attackers with tutor privileges to inject arbitrary web script or HTML via XML file upload.

A Stored Cross-site Scripting (XSS) vulnerability in the "Import of Users and login name of user" feature in ILIAS 7 before 7.30 and ILIAS 8 before 8.11 allows remote authenticated attackers with administrative privileges to inject arbitrary web script or HTML via XML file upload.

A Stored Cross-site Scripting (XSS) vulnerability in the "Import of user role and title of user role" feature in ILIAS 7 before 7.30 and ILIAS 8 before 8.11 allows remote authenticated attackers with administrative privileges to inject arbitrary web script or HTML via XML file upload.

ILIAS 7 before 7.30 and ILIAS 8 before 8.11 as well as ILIAS 9.0 allow remote authenticated attackers with administrative privileges to execute operating system commands via file uploads with dangerous types.

The workflow-engine of ILIAS before 7.23 and 8 before 8.3 allows remote authenticated users to run arbitrary system commands on the application server as the application user via a malicious BPMN2 workflow definition file.

The workflow-engine of ILIAS before 7.23 and 8 before 8.3 allows remote authenticated users to run arbitrary system commands on the application server as the application user by uploading a workflow definition file with a malicious filename.

ILIAS 7.25 (2023-09-12) allows any authenticated user to execute arbitrary operating system commands remotely, when a highly privileged account accesses an XSS payload. The injected commands are executed via the exec() function in the execQuoted() method of the ilUtil class (/Services/Utilities/classes/class.ilUtil.php) This allows attackers to inject malicious commands into the system, potentially compromising the integrity, confidentiality, and availability of the ILIAS installation and the underlying operating system.

The Learning Module in ILIAS 7.25 (2023-09-12 release) allows an attacker (with basic user privileges) to achieve a high-impact Directory Traversal attack on confidentiality and availability. By exploiting this network-based vulnerability, the attacker can move specified directories, normally outside the documentRoot, to a publicly accessible location via the PHP function rename(). This results in a total loss of confidentiality, exposing sensitive resources, and potentially denying access to the affected component and the operating system's components. To exploit this, an attacker must manipulate a POST request during the creation of an exercise unit, by modifying the oldname and newname parameters via directory traversal. However, it's essential to note that, when exploiting this vulnerability, the specified directory will be relocated from its original location, rendering all files obtained from there unavailable.

ILIAS (2013-09-12 release) contains a medium-criticality Directory Traversal local file inclusion vulnerability in the ScormAicc module. An attacker with a privileged account, typically holding the tutor role, can exploit this to gain unauthorized access to and potentially retrieve confidential files stored on the web server. The attacker can access files that are readable by the web server user www-data; this may include sensitive configuration files and documents located outside the documentRoot. The vulnerability is exploited by an attacker who manipulates the file parameter in a URL, inserting directory traversal sequences in order to access unauthorized files. This manipulation allows the attacker to retrieve sensitive files, such as /etc/passwd, potentially compromising the system's security. This issue poses a significant risk to confidentiality and is remotely exploitable over the internet.

The password reset function in ILIAS 7.0beta1 through 7.20 and 8.0beta1 through 8.1 allows remote attackers to take over the account.

ILIAS 7.21 and 8.0beta1 through 8.2 is vulnerable to reflected Cross-Site Scripting (XSS).

ILIAS 7.21 and 8.0beta1 through 8.2 is vulnerable to stored Cross Site Scripting (XSS).

ILIAS before 7.16 has an Open Redirect.

ILIAS before 7.16 allows XSS.

ILIAS before 7.16 allows OS Command Injection.

ILIAS before 7.16 allows External Control of File Name or Path.

In ILIAS through 7.10, lack of verification when changing an email address (on the Profile Page) allows remote attackers to take over accounts.

A local file inclusion vulnerability in ILIAS before 5.3.19, 5.4.10 and 6.0 allows remote authenticated attackers to execute arbitrary code via the import of personal data.

An information disclosure vulnerability in ILIAS before 5.3.19, 5.4.12 and 6.0 allows remote authenticated attackers to get the upload data path via a workspace upload.

Remote Code Execution can occur via the external news feed in ILIAS 6.4 because of incorrect parameter sanitization for Magpie RSS data.

An XSS issue exists in the question-pool file-upload preview feature in ILIAS 6.4.

Ilias 5.3 before 5.3.12; 5.2 before 5.2.21 is affected by: Cross Site Scripting (XSS) - CWE-79 Type 2: Stored XSS (or Persistent). The impact is: Execute code in the victim's browser. The component is: Assessment / TestQuestionPool. The attack vector is: Cloze Test Text gap (attacker) / Corrections view (victim). The fixed version is: 5.3.12.

ILIAS before 5.1.26, 5.2.x before 5.2.15, and 5.3.x before 5.3.4, due to inconsistencies in parameter handling, is vulnerable to various instances of reflected cross-site-scripting.