CVE-2021-29221: High severity erlang/otp vulnerability
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2021-29221?
CVE-2021-29221 is rated as a high severity local privilege escalation vulnerability.
How do I fix CVE-2021-29221?
To fix CVE-2021-29221, upgrade Erlang/OTP to version 23.2.3 or later.
Who is affected by CVE-2021-29221?
CVE-2021-29221 affects all users running Erlang/OTP prior to version 23.2.3.
What can a local attacker do with CVE-2021-29221?
A local attacker can hijack accounts of other users running Erlang programs or manipulate services using 'erlsrv.exe'.
Is CVE-2021-29221 present in default installations of Erlang/OTP?
Yes, CVE-2021-29221 can be present in default installations of Erlang/OTP versions prior to 23.2.3.