CVE-2020-8434

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Jenzabar JICS (aka Internet Campus Solution) before 9.0.1 Patch 3, 9.1 before 9.1.2 Patch 2, and 9.2 before 9.2.2 Patch 8 has session cookies that are a deterministic function of the username. There is a hard-coded password to supply a PBKDF feeding into AES to encrypt a username and base64 encode it to a client-side cookie for persistent session authentication. By knowing the key and algorithm, an attacker can select any username, encrypt it, base64 encode it, and save it in their browser with the correct JICSLoginCookie cookie format to impersonate any real user in the JICS database without the need for authenticating (or verifying with MFA if implemented).

Jenzabar JICS (también se conoce como Internet Campus Solution) versiones anteriores a 9.0.1 Patch 3, versiones 9.1 anteriores a 9.1.2, Patch 2 y versiones 9.2 anteriores a 9.2.2 Patch 8, contiene cookies de sesión que son una función determinística del nombre de usuario. Se presenta una contraseña embebida para suministrar una fuente PBKDF hacia AES para cifrar un nombre de usuario y codificarlo en base64 en una cookie del lado del cliente para una autenticación de sesión persistente. Al conocer la clave y el algoritmo, un atacante puede seleccionar cualquier nombre de usuario, cifrarlo, codificarlo en base64 y guardarlo en su navegador con el formato de cookie JICSLoginCookie correcto para suplantar a cualquier usuario real en la base de datos JICS sin la necesidad de autenticarse (o verificación con MFA si es implementado).

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-01-29 CVE Reserved
2020-05-19 CVE Published
2023-11-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-384: Session Fixation

CAPEC

References (1)

URL	Tag	Source
https://medium.com/%40mdavis332/higher-ed-erp-portal-vulnerability-auth-bypass-to-login-any-account-f1aeef438f80	X_refsource_misc

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Jenzabar Search vendor "Jenzabar"		Internet Campus Solution Search vendor "Jenzabar" for product "Internet Campus Solution"				<= 9.0.1 Search vendor "Jenzabar" for product "Internet Campus Solution" and version " <= 9.0.1"		-		Affected
Jenzabar Search vendor "Jenzabar"		Internet Campus Solution Search vendor "Jenzabar" for product "Internet Campus Solution"				>= 9.1.0 <= 9.1.2 Search vendor "Jenzabar" for product "Internet Campus Solution" and version " >= 9.1.0 <= 9.1.2"		-		Affected
Jenzabar Search vendor "Jenzabar"		Internet Campus Solution Search vendor "Jenzabar" for product "Internet Campus Solution"				>= 9.2.0 <= 9.2.2 Search vendor "Jenzabar" for product "Internet Campus Solution" and version " >= 9.2.0 <= 9.2.2"		-		Affected