xunit.2.5.0.nupkg: 1 vulnerabilities (highest severity is: 7.5)

[mend-for-github-com[bot]]

Vulnerable Library - xunit.2.5.0.nupkg

Path to dependency file: /OpenTokTest/OpenTokTest.csproj

Path to vulnerable library: /home/wss-scanner/.nuget/packages/system.text.regularexpressions/4.3.0/system.text.regularexpressions.4.3.0.nupkg

Found in HEAD commit: 4b28fa5513449adc37397f5079e4edb406c17799

Vulnerabilities

CVE	Severity	CVSS	Exploit Maturity	EPSS	Dependency	Type	Fixed in (xunit.2.5.0.nupkg version)	Remediation Possible**	Reachability
CVE-2019-0820	High	7.5	Not Defined	0.2%	system.text.regularexpressions.4.3.0.nupkg	Transitive	N/A*	❌

*For some transitive vulnerabilities, there is no version of direct dependency with a fix. Check the "Details" section below to see if there is a version of transitive dependency where vulnerability is fixed.

**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation

Details

CVE-2019-0820

### Vulnerable Library - system.text.regularexpressions.4.3.0.nupkg

Provides the System.Text.RegularExpressions.Regex class, an implementation of a regular expression e...

Library home page: https://api.nuget.org/packages/system.text.regularexpressions.4.3.0.nupkg

Path to dependency file: /OpenTokTest/OpenTokTest.csproj

Path to vulnerable library: /home/wss-scanner/.nuget/packages/system.text.regularexpressions/4.3.0/system.text.regularexpressions.4.3.0.nupkg

Dependency Hierarchy: - xunit.2.5.0.nupkg (Root Library) - xunit.assert.2.5.0.nupkg - netstandard.library.1.6.1.nupkg - system.xml.xdocument.4.3.0.nupkg - system.xml.readerwriter.4.3.0.nupkg - :x: **system.text.regularexpressions.4.3.0.nupkg** (Vulnerable Library)

Found in HEAD commit: 4b28fa5513449adc37397f5079e4edb406c17799

Found in base branch: main

### Vulnerability Details

A denial of service vulnerability exists when .NET Framework and .NET Core improperly process RegEx strings, aka '.NET Framework and .NET Core Denial of Service Vulnerability'. This CVE ID is unique from CVE-2019-0980, CVE-2019-0981. Mend Note: After conducting further research, Mend has determined that CVE-2019-0820 only affects environments with versions 4.3.0 and 4.3.1 only on netcore50 environment of system.text.regularexpressions.nupkg.

Publish Date: 2019-05-16

URL: CVE-2019-0820

### Threat Assessment

Exploit Maturity: Not Defined

EPSS: 0.2%

### CVSS 3 Score Details (7.5)

Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: None - Availability Impact: High

For more information on CVSS3 Scores, click here.

### Suggested Fix

Type: Upgrade version

Origin: https://github.com/advisories/GHSA-cmhx-cq75-c4mj

Release Date: 2019-05-16

Fix Resolution: System.Text.RegularExpressions - 4.3.1