CVE-2023-2534

Information disclouse and DoS via websocket push events

Published May 8, 2023 CVSS 3.1 · 7.6 High EPSS < 1% KEV · Not listed
Description
Improper Authorization vulnerability in OTRS AG OTRS 8 (Websocket API backend) allows any as Agent authenticated attacker to track user behaviour and to gain live insight into overall system usage. User IDs can easily be correlated with real names e. g. via
ticket histories by any user. (Fuzzing for garnering other adjacent user/sensitive data). Subscribing to all possible push events could also lead to performance implications on the server side, depending on the size of the installation
and the number of active users. (Flooding)This issue affects OTRS: from 8.0.X before 8.0.32.

Remediation

Vendor Solution

Update to OTRS 8.0.32

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-34013 Improper Authorization vulnerability in OTRS AG OTRS 8 (Websocket API backend) allows any as Agent authenticated attacker to track user behaviour and to gain live insight into overall system usage. User IDs can easily be correlated with real names e. g. via ticket histories by any user. (Fuzzing for garnering other adjacent user/sensitive data). Subscribing to all possible push events could also lead to performance implications on the server side, depending on the size of the installation and the number of active users. (Flooding)This issue affects OTRS: from 8.0.X before 8.0.32.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
OTRS
Published
Updated
Jan 29, 2025, 3:54 PM
Reserved
May 5, 2023, 6:14 AM
Status
Modified
Published
May 8, 2023, 8:15 AM
Modified
Jun 17, 2026, 5:52 AM