CVE-2021-29221
CVSS V2 Medium 6.2
CVSS V3 High 7
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 "erlsrv.exe" to execute arbitrary code as Local System. This can occur only under specific conditions on Windows with unsafe filesystem permissions.
Overview
- CVE ID
- CVE-2021-29221
- Assigner
- security@deepsurface.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-04-09T14:15:12
- Last Modified Date
- 2021-04-20T18:00:21
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| AND | ||||
| cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* | 1 | OR | 23.2.3 | |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | 0 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:H/Au:N/C:C/I:C/A:C
- Access Vector
- LOCAL
- Access Compatibility
- HIGH
- Authentication
- NONE
- Confidentiality Impact
- COMPLETE
- Integrity Impact
- COMPLETE
- Availability Impact
- COMPLETE
- Base Score
- 6.2
- Severity
- MEDIUM
- Exploitability Score
- 1.9
- Impact Score
- 10
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 7
- Base Severity
- HIGH
- Exploitability Score
- 1
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://deepsurface.com/deepsurface-security-advisory-local-privilege-escalation-in-erlang-on-windows-cve-2021-29221/ | Exploit Third Party Advisory |
| https://github.com/erlang/otp/releases/tag/OTP-23.2.3 | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-29221 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29221 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:15:10 | Added to TrackCVE | |||
| 2022-12-06 01:30:00 | 2021-04-09T14:15Z | 2021-04-09T14:15:12 | CVE Published Date | updated |
| 2022-12-06 01:30:00 | 2021-04-20T18:00:21 | CVE Modified Date | updated | |
| 2022-12-06 01:30:00 | Analyzed | Vulnerability Status | updated |