PT-2023-12128 · Ericsson · Ericsson Mobile Switching Center Server

Alessandro Bosco + 2 · Published 2023-09-14 · Updated 2023-10-25 · CVE-2021-28485

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions Ericsson Mobile Switching Center Server (MSC-S) versions BC 18A and IS 3.1 through IS 3.1 CP21

Description The issue allows relative path traversal via a specific parameter in the https request after authentication, which enables access to files on the system that are not intended to be accessible via the web application.

Recommendations For Ericsson Mobile Switching Center Server (MSC-S) versions BC 18A and IS 3.1 through IS 3.1 CP21, update to IS 3.1 CP22 or later to resolve the issue.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2021-28485

Affected Products

Ericsson Mobile Switching Center Server

References · 8

• https://ericsson.com/en/about-us/security/psirt · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-28485 · Security Note
• https://osv.dev/vulnerability/CVE-2021-28485 · Vendor Advisory
• https://twitter.com/geekphane/status/1704868149454152016 · Twitter Post
• https://gruppotim.it/it/footer/red-team.html · Note
• https://t.me/cvenotify/58280 · Telegram Post
• https://t.me/cibsecurity/70448 · Telegram Post
• https://twitter.com/DMFezzaReedCISA/status/1702355399297364187 · Twitter Post