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Improper Certificate Validation Affecting system.net.http.winhttphandler package, versions [,4.0.2) [4.3,4.5.4)

Severity

 Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    0.21% (60th percentile)

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  • Snyk ID SNYK-DOTNET-SYSTEMNETHTTPWINHTTPHANDLER-60042
  • published 12 May 2017
  • disclosed 12 May 2017
  • credit Joonwoo Yu, Hyoung-Kee Choi
Report a new vulnerability Found a mistake?

Introduced: 12 May 2017

CVE-2017-0248 Open this link in a new tab
CWE-287 Open this link in a new tab

How to fix?

Upgrade System.Net.Http.WinHttpHandler to version 4.0.2, 4.5.4 or higher.

Overview

Affected versions of this package are vulnerable to Improper Certificate Validation. It allows an attacker to bypass Enhanced Security Usage tagging when they present a certificate that is invalid for a specific use.

CVSS Scores

version 3.1
Expand this section

Snyk

Recommended
7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    High
  • Availability (A)
    None