PT-2021-3278 · Hirschmann · Hirschmann Hisecos+1

Published 2021-05-11 · Updated 2022-07-12 · CVE-2021-27734

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Hirschmann HiOS versions 07.1.01 through 08.5.xx Hirschmann HiSecOS versions 03.3.00 through 03.5.01

Description The issue is related to insufficient protection of registration data in the Hirschmann HiOS and HiSecOS operating systems. This allows remote attackers to change the credentials of existing users, potentially leading to unauthorized access to protected information.

Recommendations For Hirschmann HiOS versions 07.1.01 through 08.5.xx, update to a version that addresses the issue. For Hirschmann HiSecOS versions 03.3.00 through 03.5.01, update to a version that addresses the issue. As a temporary workaround, consider restricting access to the user management functionality until a patch is available.

Fix

Improper Authentication

Insufficiently Protected Credentials

Weakness Enumeration

CWE-287

CWE-522

Related Identifiers

BDU:2021-03049

CVE-2021-27734

Affected Products

Hirschmann Hios

Hirschmann Hisecos

References · 6

• https://osv.dev/vulnerability/CVE-2021-27734 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-27734 · Security Note
• https://bdu.fstec.ru/vul/2021-03049 · Security Note
• https://dam.belden.com/dmm3bwsv3/assetstream.aspx?assetid=12914&mediaformatid=50063&destinationid=10016 · Vendor Advisory
• https://dam.belden.com/dmm3bwsv3/assetstream.aspx?assetid=12914&mediaformatid=50063&destinationid=10016 · Note
• https://t.me/cvenotify/14531 · Telegram Post