Microsoft .NET Framework Remote Code Execution Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2021-11-03
• EPSS: 89% chance of exploitation in the next 30 days (higher than 100% of CVEs)

[ Description ]Official description

Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to execute code remotely via a malicious document or application, aka ".NET Framework Remote Code Execution Vulnerability."

CISA: Microsoft .NET Framework contains a remote code execution vulnerability when processing untrusted input that could allow an attacker to take control of an affected system.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 3 May 2022): Apply updates per vendor instructions.

• Patch on portal.msrc.microsoft.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ References ]References

• www.securityfocus.com/bid/100742Broken LinkThird Party AdvisoryVDB Entry
• www.securitytracker.com/id/1039324Broken LinkThird Party AdvisoryVDB Entry
• github.com/GitHubAssessments/CVE_Assessments_01_2020Third Party Advisory
• github.com/bhdresh/CVE-2017-8759ExploitThird Party Advisory
• github.com/nccgroup/CVE-2017-8759ExploitThird Party Advisory
• portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8759PatchVendor Advisory
• www.exploit-db.com/exploits/42711Third Party AdvisoryVDB Entry
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource