SB2023031433 - Remote code execution in Microsoft IIS

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Main Vulnerability Database SB2023031433

SB2023031433 - Remote code execution in Microsoft IIS

Published: March 14, 2023

Security Bulletin ID SB2023031433
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Input validation error (CVE-ID: CVE-2023-23392)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input in the HTTP Protocol Stack (http.sys) when handling HTTP/3 requests. A remote attacker can send a specially crafted HTTP/3 request to the affected server and execute arbitrary code on the system.

Successful exploitation of the vulnerability requires HTTP/3 to be enabled on the server.


Remediation

Install update from vendor's website.

References