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CVE-2021-30481 Detail

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.


Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  9.0 CRITICAL
Vector:  CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Nist CVSS score does not match with CNA score
CNA:  MITRE
Base Score:  8.0 HIGH
Vector:  CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://news.ycombinator.com/item?id=26762170 Issue Tracking  Third Party Advisory 
https://twitter.com/floesen_/status/1337107178096881666 Third Party Advisory 
https://twitter.com/the_secret_club/status/1380868759129296900 Exploit  Third Party Advisory 
https://www.youtube.com/watch?v=rNQn--9xR1Q Exploit  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-30481
NVD Published Date:
04/10/2021
NVD Last Modified:
02/07/2022
Source:
MITRE