CVE-2020-1464 on CISA KEV

A spoofing vulnerability exists when Windows incorrectly validates file signatures. An attacker who successfully exploited this vulnerability could bypass security features and load improperly signed files. In an attack scenario, an attacker could bypass security features intende

01What CISA says about this vulnerability

A spoofing vulnerability exists when Windows incorrectly validates file signatures. An attacker who successfully exploited this vulnerability could bypass security features and load improperly signed files. In an attack scenario, an attacker could bypass security features intended to prevent improperly signed files from being loaded. The update addresses the vulnerability by correcting how…

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• medium.com — https://medium.com/%40TalBeerySec/glueball-the-story-of-cve-2020-1464-50091a1f98…
• krebsonsecurity.com — https://krebsonsecurity.com/2020/08/microsoft-put-off-fixing-zero-day-for-2-year…
• portal.msrc.microsoft.com — https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1464
• blog.virustotal.com — https://blog.virustotal.com/2019/01/distribution-of-malicious-jar-appended.html

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
Microsoft	Windows 10 Version 1803	10.0.0
Microsoft	Windows 10 Version 1809	10.0.0
Microsoft	Windows Server 2019	10.0.0
Microsoft	Windows Server 2019 (Server Core installation)	10.0.0
Microsoft	Windows 10 Version 1909	10.0.0
Microsoft	Windows Server, version 1909 (Server Core installation)	10.0.0
Microsoft	Windows 10 Version 1709 for 32	bit Systems — 10.0.0
Microsoft	Windows 10 Version 1709	10.0.0
Microsoft	Windows 10 Version 1903 for 32	bit Systems — 10.0.0
Microsoft	Windows 10 Version 1903 for x64	based Systems — 10.0.0
Microsoft	Windows 10 Version 1903 for ARM64	based Systems — 10.0.0
Microsoft	Windows Server, version 1903 (Server Core installation)	10.0.0
Microsoft	Windows 10 Version 2004	10.0.0
Microsoft	Windows Server version 2004	10.0.0
Microsoft	Windows 10 Version 1507	10.0.0
Microsoft	Windows 10 Version 1607	10.0.0
Microsoft	Windows Server 2016	10.0.0
Microsoft	Windows Server 2016 (Server Core installation)	10.0.0
Microsoft	Windows 7	6.1.0
Microsoft	Windows 7 Service Pack 1	6.1.0
Microsoft	Windows 8.1	6.3.0
Microsoft	Windows Server 2008 Service Pack 2	6.0.0
Microsoft	Windows Server 2008 Service Pack 2 (Server Core installation)	6.0.0
Microsoft	Windows Server 2008 Service Pack 2	6.0.0
Microsoft	Windows Server 2008 R2 Service Pack 1	6.1.0
Microsoft	Windows Server 2008 R2 Service Pack 1 (Server Core installation)	6.0.0
Microsoft	Windows Server 2012	6.2.0
Microsoft	Windows Server 2012 (Server Core installation)	6.2.0
Microsoft	Windows Server 2012 R2	6.3.0
Microsoft	Windows Server 2012 R2 (Server Core installation)	6.3.0

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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