4.3
MEDIUM
CVE-2021-28485
Ericsson MSC-S Remote File Inclusion Vulnerability
Description

In Ericsson Mobile Switching Center Server (MSC-S) before IS 3.1 CP22, the SIS web application allows relative path traversal via a specific parameter in the https request after authentication, which allows access to files on the system that are not intended to be accessible via the web application.

INFO

Published Date :

Sept. 14, 2023, 3:15 p.m.

Last Modified :

Oct. 25, 2023, 8:13 p.m.

Remotely Exploitable :

Yes !

Impact Score :

1.4

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2021-28485 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 Ericsson mobile_switching_center_server_bc_18a_firmware
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-2021-28485.

URL Resource
https://www.ericsson.com/en/about-us/security/psirt Vendor Advisory
https://www.gruppotim.it/it/footer/red-team.html Third Party 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-2021-28485 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-28485 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]

    Oct. 25, 2023

    Action Type Old Value New Value
    Removed CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
  • Initial Analysis by [email protected]

    Sep. 21, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type https://www.ericsson.com/en/about-us/security/psirt No Types Assigned https://www.ericsson.com/en/about-us/security/psirt Vendor Advisory
    Changed Reference Type https://www.gruppotim.it/it/footer/red-team.html No Types Assigned https://www.gruppotim.it/it/footer/red-team.html Third Party Advisory
    Added CWE NIST CWE-22
    Added CPE Configuration AND OR *cpe:2.3:o:ericsson:mobile_switching_center_server_bc_18a_firmware:*:*:*:*:*:*:*:* versions from (including) is_3.1 up to (excluding) is_3.1_cp22 OR cpe:2.3:h:ericsson:mobile_switching_center_server_bc_18a:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Sep. 19, 2023

    Action Type Old Value New Value
    Added Reference https://www.ericsson.com/en/about-us/security/psirt [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 15, 2023

    Action Type Old Value New Value
    Changed Description Ericsson Mobile Switching Center Server (MSC-S) BC 18A and IS 3.1 releases before IS 3.1 CP22 allows Directory Traversal. In Ericsson Mobile Switching Center Server (MSC-S) before IS 3.1 CP22, the SIS web application allows relative path traversal via a specific parameter in the https request after authentication, which allows access to files on the system that are not intended to be accessible via the web application.
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-2021-28485 is associated with the following CWEs:

Exploit Prediction

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

0.06 }} 0.01%

score

0.28229

percentile

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