Actively exploited · Published May 9, 2018 · Assigned by microsoft
CVE-2018-8174
High 7.5 Exploited Ransomware
In plain English
A high-severity out-of-bounds write in Windows 10 from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on February 15, 2022). It has been used in ransomware campaigns. The chance it is exploited in the next 30 days is estimated at 88.2% (higher than 99.8% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Apply updates per vendor instructions.
CISA guidance
Apply updates per vendor instructions.
Federal agencies must remediate by Aug 15, 2022.
Official description
A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine Remote Code Execution Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 7 | 32-bit Systems Service Pack 1x64-based Systems Service Pack 1 |
| Microsoft | Windows Server 2012 R2 | (Server Core installation) |
| Microsoft | Windows RT 8.1 | Windows RT 8.1 |
| Microsoft | Windows Server 2008 | 32-bit Systems Service Pack 232-bit Systems Service Pack 2 (Server Core installation)Itanium-Based Systems Service Pack 2x64-based Systems Service Pack 2x64-based Systems Service Pack 2 (Server Core installation) |
| Microsoft | Windows Server 2012 | (Server Core installation) |
| Microsoft | Windows 8.1 | 32-bit systemsx64-based systems |
| Microsoft | Windows Server 2016 | (Server Core installation) |
| Microsoft | Windows Server 2008 R2 | Itanium-Based Systems Service Pack 1x64-based Systems Service Pack 1x64-based Systems Service Pack 1 (Server Core installation) |
| Microsoft | Windows 10 | 32-bit SystemsVersion 1607 for 32-bit SystemsVersion 1607 for x64-based SystemsVersion 1703 for 32-bit SystemsVersion 1703 for x64-based SystemsVersion 1709 for 32-bit SystemsVersion 1709 for x64-based SystemsVersion 1803 for 32-bit Systems |
| Microsoft | Windows 10 Servers | version 1709 (Server Core Installation)version 1803 (Server Core Installation) |
Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- 44741 exploit, x_refsource_EXPLOIT-DB
- https://blog.0patch.com/2018/05/a-single-instruction-micropatch-for.html x_refsource_MISC
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8174 x_refsource_CONFIRM
- 103998 vdb-entry, x_refsource_BID
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8174 government-resource