CVE-2021-30481

CVSS V2 Medium 6 CVSS V3 Critical 9
Description
Valve Steam through 2021-04-10, when a Source engine game is installed, allows remote authenticated users to execute arbitrary code because of a buffer overflow that occurs for a Steam invite after one click.
Overview
  • CVE ID
  • CVE-2021-30481
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-04-10T19:15:11
  • Last Modified Date
  • 2022-02-07T19:09:13
Weakness Enumerations
CWE URL
CWE-120 http://cwe.mitre.org/data/definitions/120.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:valvesoftware:steam_client:*:*:*:*:*:*:*:* 1 OR 2021-04-10
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:S/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 6
  • Severity
  • MEDIUM
  • Exploitability Score
  • 6.8
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • REQUIRED
  • Scope
  • CHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 2.3
  • Impact Score
  • 6
References
Reference URL Reference Tags
https://www.youtube.com/watch?v=rNQn--9xR1Q Exploit Third Party Advisory
https://news.ycombinator.com/item?id=26762170 Issue Tracking Third Party Advisory
https://twitter.com/the_secret_club/status/1380868759129296900 Exploit Third Party Advisory
https://twitter.com/floesen_/status/1337107178096881666 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-30481
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30481
History
Created Old Value New Value Data Type Notes
2022-05-10 06:33:45 Added to TrackCVE
2022-12-06 01:33:21 2021-04-10T19:15Z 2021-04-10T19:15:11 CVE Published Date updated
2022-12-06 01:33:21 2022-02-07T19:09:13 CVE Modified Date updated
2022-12-06 01:33:21 Analyzed Vulnerability Status updated