Windows Print Spooler Elevation of Privilege Vulnerability
83Vexday Risk Score
Patch now. It exploitation observed by VulnCheck and has a working public exploit.
ssvc Actcvss 7.8epss 16%
from disclosure to weapon33 days
Published on NVDMay 21
1st PoC+33d
metasploitNov 4
VulnCheck+1917d
exploitation probability
16%top 3% of all CVEs
observed exploitation
yesVulnCheck
5 public exploit(s)
An elevation of privilege vulnerability exists when the Windows Print Spooler service improperly allows arbitrary writing to the file system. An attacker who successfully exploited this vulnerability could run arbitrary code with elevated system privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted script or application.
The update addresses the vulnerability by correcting how the Windows Print Spooler Component writes to the file system.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Affected products
Microsoft · Windows 10 Version 1507Microsoft · Windows 10 Version 1607Microsoft · Windows 10 Version 1709Microsoft · Windows 10 Version 1709 for 32-bit SystemsMicrosoft · Windows 10 Version 1803Microsoft · Windows 10 Version 1809Microsoft · Windows 10 Version 1903 for 32-bit SystemsMicrosoft · Windows 10 Version 1903 for ARM64-based SystemsMicrosoft · Windows 10 Version 1903 for x64-based SystemsMicrosoft · Windows 10 Version 1909Microsoft · Windows 7Microsoft · Windows 7 Service Pack 1Microsoft · Windows 8.1Microsoft · Windows Server 2008 R2 Service Pack 1Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)Microsoft · Windows Server 2008 Service Pack 2Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)Microsoft · Windows Server 2012Microsoft · Windows Server 2012 R2Microsoft · Windows Server 2012 R2 (Server Core installation)Microsoft · Windows Server 2012 (Server Core installation)Microsoft · Windows Server 2016Microsoft · Windows Server 2016 (Server Core installation)Microsoft · Windows Server 2019Microsoft · Windows Server 2019 (Server Core installation)Microsoft · Windows Server, version 1803 (Server Core Installation)Microsoft · Windows Server, version 1903 (Server Core installation)Microsoft · Windows Server, version 1909 (Server Core installation)public PoCs found — 5
vulncheckvulncheck.com/xdb/547b9e8de953unverifiedvulncheckvulncheck.com/xdb/4ed4a1f4d9acunverifiedvulncheckvulncheck.com/xdb/88397a5d8898unverifiedvulncheckvulncheck.com/xdb/54e36681b3c2unverifiedvulncheckvulncheck.com/xdb/2d65f676b0caunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
http://packetstormsecurity.com/files/158222/Windows-Print-Spooler-Privilege-Escalation.htmlhttp://packetstormsecurity.com/files/159217/Microsoft-Spooler-Local-Privilege-Elevation.htmlhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1048https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1048