CVE-2021-29221 Information

Description

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 rlsrv.exe\ to execute arbitrary code as Local System. This can occur only under specific conditions on Windows with unsafe filesystem permissions.

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

https://deepsurface.com/deepsurface-security-advisory-local-privilege-escalation-in-erlang-on-windows-cve-2021-29221/ https://github.com/erlang/otp/releases/tag/OTP-23.2.3

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.0