// For flags

CVE-2023-2534

Information disclouse and DoS via websocket push events

Severity Score

8.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

*Credits: Special thanks to Maximilian Gutwein for reporting these vulnerability.
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
Low
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2023-05-05 CVE Reserved
  • 2023-05-08 CVE Published
  • 2024-08-02 CVE Updated
  • 2024-10-18 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-285: Improper Authorization
  • CWE-863: Incorrect Authorization
CAPEC
  • CAPEC-125: Flooding
  • CAPEC-261: Fuzzing for garnering other adjacent user/sensitive data
References (1)
URL Tag Source
URL Date SRC
URL Date SRC
URL Date SRC
https://otrs.com/release-notes/otrs-security-advisory-2023-03 2023-05-16
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Otrs
Search vendor "Otrs"
 Otrs
Search vendor "Otrs" for product "Otrs"
 >= 8.0.0 < 8.0.32
Search vendor "Otrs" for product "Otrs" and version " >= 8.0.0 < 8.0.32"
-
Affected