CVE-2020-10102

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in Zammad 3.0 through 3.2. The Forgot Password functionality is implemented in a way that would enable an anonymous user to guess valid user emails. In the current implementation, the application responds differently depending on whether the input supplied was recognized as associated with a valid user. This behavior could be used as part of a two-stage automated attack. During the first stage, an attacker would iterate through a list of account names to determine which correspond to valid accounts. During the second stage, the attacker would use a list of common passwords to attempt to brute force credentials for accounts that were recognized by the system in the first stage.

Se detectó un problema en Zammad versiones 3.0 hasta 3.2. La funcionalidad Forgot Password se implementa de una manera que permitiría a un usuario anónimo adivinar correos electrónicos de usuarios válidos. En la implementación actual, la aplicación responde de manera diferente dependiendo de si la entrada suministrada fue reconocida como asociada con un usuario válido. Este comportamiento podría ser usado como parte de un ataque automatizado de dos etapas. Durante la primera etapa, un atacante iteraría por medio de una lista de nombres de cuenta para determinar cuáles corresponden a cuentas válidas. Durante la segunda etapa, el atacante usaría una lista de contraseñas comunes para intentar obtener credenciales de fuerza bruta para las cuentas que fueron reconocidas por el sistema en la primera etapa.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-03-05 CVE Reserved
2020-03-05 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-203: Observable Discrepancy

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://zammad.com/news/security-advisory-zaa-2020-07	2020-03-05

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Zammad Search vendor "Zammad"		Zammad Search vendor "Zammad" for product "Zammad"				>= 1.0.0 <= 3.2.0 Search vendor "Zammad" for product "Zammad" and version " >= 1.0.0 <= 3.2.0"		-		Affected