CVE-2020-1776

Invalidating or changing user does not invalidate session

Severity Score

4.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

When an agent user is renamed or set to invalid the session belonging to the user is keept active. The session can not be used to access ticket data in the case the agent is invalid. This issue affects ((OTRS)) Community Edition: 6.0.28 and prior versions. OTRS: 7.0.18 and prior versions, 8.0.4. and prior versions.

Cuando un usuario de agente es renombrado o se establece como no válido, la sesión que pertenece al usuario se mantiene activa. La sesión no puede ser usada para acceder a los datos del ticket en caso de que el agente no sea válido. Este problema afecta a ((OTRS)) Community Edition: versiones 6.0.28 y anteriores. OTRS: versiones 7.0.18 y anteriores, versiones 8.0.4. y anteriores

*Credits: Marvin Voormann

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-11-29 CVE Reserved
2020-07-20 CVE Published
2024-09-17 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-613: Insufficient Session Expiration

CAPEC

References (2)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2023/08/msg00040.html	Mailing List

URL	Date	SRC

URL	Date	SRC
https://otrs.com/release-notes/otrs-security-advisory-2020-13	2023-08-31

URL	Date	SRC

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"				< 6.0.29 Search vendor "Otrs" for product "Otrs" and version " < 6.0.29"		community		Affected
Otrs Search vendor "Otrs"		Otrs Search vendor "Otrs" for product "Otrs"				>= 7.0.0 < 7.0.19 Search vendor "Otrs" for product "Otrs" and version " >= 7.0.0 < 7.0.19"		-		Affected
Otrs Search vendor "Otrs"		Otrs Search vendor "Otrs" for product "Otrs"				>= 8.0.1 < 8.0.5 Search vendor "Otrs" for product "Otrs" and version " >= 8.0.1 < 8.0.5"		-		Affected