Vulnerability Monitor

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CVE-2021-29221

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.

Published

2021-04-09T14:15:12.910

Last Modified

2024-11-21T06:00:51.240

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.0 (HIGH)

CVSSv2 Vector

AV:L/AC:H/Au:N/C:C/I:C/A:C

Access Vector: LOCAL
Access Complexity: HIGH
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

1.9

Impact Score

10.0

Weaknesses

Type: Primary
CWE-426

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	erlang	erlang\/otp	< 23.2.3	Yes
Operating System	microsoft	windows	-	No

References

https://deepsurface.com/deepsurface-security-advisory-local-privilege-escalation-in-erlang-on-windows-cve-2021-29221/ Exploit, Third Party Advisory ([email protected])
https://github.com/erlang/otp/releases/tag/OTP-23.2.3 Third Party Advisory ([email protected])
https://deepsurface.com/deepsurface-security-advisory-local-privilege-escalation-in-erlang-on-windows-cve-2021-29221/ Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/erlang/otp/releases/tag/OTP-23.2.3 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)