Local Privilege Escalation in Erlang/OTP Prior to Version 23.2.3
CVE-2021-29221

7HIGH

Key Information:

Vendor

Erlang Project

Status
Erlang/otp
Vendor
CVE Published:
9 April 2021

What is CVE-2021-29221?

A local privilege escalation issue has been identified in Erlang/OTP, which affects versions prior to 23.2.3. This vulnerability can be exploited by a local attacker through the manipulation of file permissions within an existing installation's directory. Under certain conditions on the Windows operating system, an attacker may hijack the accounts of other users running Erlang applications or compel a service operating under 'erlsrv.exe' to execute arbitrary code with Local System privileges. The exploitation of this vulnerability necessitates unsafe filesystem permissions.

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Affected Version(s)

Erlang/OTP < 23.2.3

References

https://github.com/erlang/otp/releases/tag/OTP-23.2.3
x_refsource_MISC
https://deepsurface.com/deepsurface-security-advisory-loc...
x_refsource_MISC

CVSS V3.1

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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