7.5
HIGH
CVE-2021-21327
GLPI Unauthenticated Object Instantiation Vulnerability
Description

GLPI is an open-source asset and IT management software package that provides ITIL Service Desk features, licenses tracking and software auditing. In GLPI before version 9.5.4 non-authenticated user can remotely instantiate object of any class existing in the GLPI environment that can be used to carry out malicious attacks, or to start a “POP chain”. As an example of direct impact, this vulnerability affects integrity of the GLPI core platform and third-party plugins runtime misusing classes which implement some sensitive operations in their constructors or destructors. This is fixed in version 9.5.4.

INFO

Published Date :

March 8, 2021, 5:15 p.m.

Last Modified :

June 26, 2023, 7:20 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-21327 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Glpi-project glpi
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-21327.

URL Resource
http://packetstormsecurity.com/files/161680/GLPI-9.5.3-Unsafe-Reflection.html Exploit Third Party Advisory VDB Entry
https://github.com/glpi-project/glpi/releases/tag/9.5.4 Release Notes
https://github.com/glpi-project/glpi/security/advisories/GHSA-qmw7-w2m4-rjwp Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-21327 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-21327 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Jun. 26, 2023

    Action Type Old Value New Value
    Changed Reference Type https://github.com/glpi-project/glpi/releases/tag/9.5.4 Release Notes, Third Party Advisory https://github.com/glpi-project/glpi/releases/tag/9.5.4 Release Notes
    Changed Reference Type https://github.com/glpi-project/glpi/security/advisories/GHSA-qmw7-w2m4-rjwp Third Party Advisory https://github.com/glpi-project/glpi/security/advisories/GHSA-qmw7-w2m4-rjwp Vendor Advisory
    Added CWE NIST CWE-470
  • Initial Analysis by [email protected]

    Mar. 16, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    Changed Reference Type http://packetstormsecurity.com/files/161680/GLPI-9.5.3-Unsafe-Reflection.html No Types Assigned http://packetstormsecurity.com/files/161680/GLPI-9.5.3-Unsafe-Reflection.html Exploit, Third Party Advisory, VDB Entry
    Changed Reference Type https://github.com/glpi-project/glpi/releases/tag/9.5.4 No Types Assigned https://github.com/glpi-project/glpi/releases/tag/9.5.4 Release Notes, Third Party Advisory
    Changed Reference Type https://github.com/glpi-project/glpi/security/advisories/GHSA-qmw7-w2m4-rjwp No Types Assigned https://github.com/glpi-project/glpi/security/advisories/GHSA-qmw7-w2m4-rjwp Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:glpi-project:glpi:*:*:*:*:*:*:*:* versions up to (excluding) 9.5.4
  • CVE Modified by [email protected]

    Mar. 08, 2021

    Action Type Old Value New Value
    Changed Description GLPI is an open-source asset and IT management software package that provides ITIL Service Desk features, licenses tracking and software auditing. In GLPI before version 9.5.4 non-authenticated user can remotely instantiate object of any class existing in the GLPI environment that can be used to carry out malicious attacks, or to start a “POP chainâ€?. As an example of direct impact, this vulnerability affects integrity of the GLPI core platform and third-party plugins runtime misusing classes which implement some sensitive operations in their constructors or destructors. This is fixed in version 9.5.4. GLPI is an open-source asset and IT management software package that provides ITIL Service Desk features, licenses tracking and software auditing. In GLPI before version 9.5.4 non-authenticated user can remotely instantiate object of any class existing in the GLPI environment that can be used to carry out malicious attacks, or to start a “POP chain”. As an example of direct impact, this vulnerability affects integrity of the GLPI core platform and third-party plugins runtime misusing classes which implement some sensitive operations in their constructors or destructors. This is fixed in version 9.5.4.
    Added Reference http://packetstormsecurity.com/files/161680/GLPI-9.5.3-Unsafe-Reflection.html [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-21327 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-21327 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

2.50 }} -0.43%

score

0.90416

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability