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## CVE-2019-0820 - High Severity Vulnerability <details><summary><img src='https://whitesource-resources.whitesourcesoftware.com/vulnerability_details.png' width=19 height=20> Vulnerable Library - <b>system.text.regularexpressions.4.3.0.nupkg</b></p></summary> <p>Provides the System.Text.RegularExpressions.Regex class, an implementation of a regular expression e...</p> <p>Library home page: <a href="https://api.nuget.org/packages/system.text.regularexpressions.4.3.0.nupkg">https://api.nuget.org/packages/system.text.regularexpressions.4.3.0.nupkg</a></p> <p>Path to dependency file: /Ghpr.Tests.Tests/Ghpr.Core.Tests.csproj</p> <p>Path to vulnerable library: /home/wss-scanner/.nuget/packages/system.text.regularexpressions/4.3.0/system.text.regularexpressions.4.3.0.nupkg</p> <p> Dependency Hierarchy: - nunit3testadapter.3.17.0.nupkg (Root Library) - system.xml.xmldocument.4.3.0.nupkg - system.xml.readerwriter.4.3.0.nupkg - :x: **system.text.regularexpressions.4.3.0.nupkg** (Vulnerable Library) <p>Found in HEAD commit: <a href="https://github.com/GHPReporter/Ghpr.Core/commit/61c01ea44f52cf09332bbf411ffeb7479870bc5c">61c01ea44f52cf09332bbf411ffeb7479870bc5c</a></p> <p>Found in base branch: <b>master</b></p> </p> </details> <p></p> <details><summary><img src='https://whitesource-resources.whitesourcesoftware.com/high_vul.png?' width=19 height=20> Vulnerability Details</summary> <p> 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. <p>Publish Date: 2019-05-16 <p>URL: <a href=https://www.mend.io/vulnerability-database/CVE-2019-0820>CVE-2019-0820</a></p> </p> </details> <p></p> <details><summary><img src='https://whitesource-resources.whitesourcesoftware.com/cvss3.png' width=19 height=20> CVSS 3 Score Details (<b>7.5</b>)</summary> <p> 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 </p> For more information on CVSS3 Scores, click <a href="https://www.first.org/cvss/calculator/3.0">here</a>. </p> </details> <p></p> <details><summary><img src='https://whitesource-resources.whitesourcesoftware.com/suggested_fix.png' width=19 height=20> Suggested Fix</summary> <p> <p>Type: Upgrade version</p> <p>Origin: <a href="https://github.com/advisories/GHSA-cmhx-cq75-c4mj">https://github.com/advisories/GHSA-cmhx-cq75-c4mj</a></p> <p>Release Date: 2019-05-16</p> <p>Fix Resolution: System.Text.RegularExpressions - 4.3.1</p> </p> </details> <p></p> *** Step up your Open Source Security Game with Mend [here](https://www.whitesourcesoftware.com/full_solution_bolt_github)