CVE-2021-29221

Severity Score

7.0

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A local privilege escalation vulnerability was discovered in Erlang/OTP prior to version 23.2.3. By adding files to an existing installation's directory, a local attacker could hijack accounts of other users running Erlang programs or possibly coerce a service running with "erlsrv.exe" to execute arbitrary code as Local System. This can occur only under specific conditions on Windows with unsafe filesystem permissions.

Se detectó una vulnerabilidad de escalada de privilegios local en Erlang/OTP anterior a versión 23.2.3. Al agregar archivos a un directorio de instalación existente, un atacante local podría secuestrar cuentas de otros usuarios que ejecutan programas Erlang o posiblemente coaccionar un servicio que se ejecuta con "erlsrv.exe" para ejecutar código arbitrario como Local System. Esto puede ocurrir solo bajo condiciones específicas en Windows con permisos de sistema de archivos no seguros

*Credits: N/A

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

High

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-03-25 CVE Reserved
2021-04-09 CVE Published
2024-03-15 EPSS Updated
2024-08-03 CVE Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-426: Untrusted Search Path

CAPEC

References (2)

URL	Tag	Source
https://github.com/erlang/otp/releases/tag/OTP-23.2.3	Third Party Advisory

URL	Date	SRC
https://deepsurface.com/deepsurface-security-advisory-local-privilege-escalation-in-erlang-on-windows-cve-2021-29221	2024-08-03

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
Erlang Search vendor "Erlang"	Erlang\/otp Search vendor "Erlang" for product "Erlang\/otp"	< 23.2.3 Search vendor "Erlang" for product "Erlang\/otp" and version " < 23.2.3"	-	Affected	in	Microsoft Search vendor "Microsoft"	Windows Search vendor "Microsoft" for product "Windows"	-	-	Safe