CVE-2018-8174
Confirmed PUBLISHEDA remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka "Windows VBScript Engine Remote...
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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.
- CVE Published
- May 09, 2018
- Exploitation Reported
- Feb 15, 2022
- CVSS
- 7.5 High
- EPSS
- —
Affected Versions
28 version rows · page 2 of 2
| Vendor | Product | Version | Status |
|---|---|---|---|
| Microsoft |
Windows 10
|
x64-based Systems |
Affected |
| Microsoft |
Windows 10 Servers
|
version 1709 (Server Core Installation) |
Affected |
| Microsoft |
Windows 10 Servers
|
version 1803 (Server Core Installation) |
Affected |
CVE References
- 44741 exploit-db.com · Exploit https://www.exploit-db.com/exploits/44741/
- 103998 securityfocus.com · VDB Entry http://www.securityfocus.com/bid/103998
- blog.0patch.com/2018/05/a-single-instruction-micropatch-for.... blog.0patch.com · CVE Record https://blog.0patch.com/2018/05/a-single-instruction-micropatch-for.html
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8174 portal.msrc.microsoft.com · CVE Record https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CV...
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2022-02-15 00:00 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
AV:N/AC:H/Au:N/C:C/I:C/A:C
Exploitation Status
Exploited in the wild
Recorded 2022-02-15 00:00:00 UTC · CISA
Used in malware
Recorded 2022-02-15 00:00:00 UTC · CISA
Proof of concept available
Recorded 2018-05-22 21:50:32 UTC · GitHub
Weaknesses (CWE)
-
Out-of-bounds Write
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2021-12-03 12:30:07 UTC · 0 stars
github · Created 2021-11-25 05:06:25 UTC · 0 stars
github · Created 2021-05-25 07:48:30 UTC · 0 stars
github · Created 2021-04-05 02:31:54 UTC · 0 stars
github · Created 2021-04-05 02:27:49 UTC · 0 stars
github · Created 2020-11-24 07:32:39 UTC · 0 stars
github · Created 2020-11-24 07:31:07 UTC · 0 stars
github · Created 2020-07-31 03:13:43 UTC · 0 stars
github · Created 2018-09-06 04:03:25 UTC · 0 stars
github · Created 2018-06-26 09:03:45 UTC · 1 stars
Rig Exploit for CVE-2018-8174 As with its previous campaigns, Rig’s Seamless campaign uses malvertising. In this case, the malvertisements have a hidden iframe that redirects victims to Rig’s landing page, which includes an exploit for CVE-2018-8174 and shellcode. This enables remote code execution of the shellcode obfuscated in the landing page. After successful exploitation, a second-stage downloader is retrieved, which appears to be a variant of SmokeLoader due to the URL. It would then download the final payload, a Monero miner.
github · Created 2018-06-01 22:12:54 UTC · 7 stars
MS Word MS WordPad via IE VBS Engine RCE
github · Created 2018-05-22 21:50:32 UTC · 167 stars
CVE-2018-8174 - VBScript memory corruption exploit.
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
00:00 UTC over 4 years ago00:00 UTC · over 4 years ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
00:00 UTC over 4 years ago00:00 UTC · over 4 years ago
First public exploitation report
Exploit observed in malware
-
21:50 UTC about 8 years ago21:50 UTC · about 8 years ago
Public PoC available
Public proof-of-concept code published
-
19:00 UTC about 8 years ago19:00 UTC · about 8 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC over 8 years ago00:00 UTC · over 8 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2018-8174
{
"cve_id": "CVE-2018-8174",
"title": "A remote code execution vulnerability exists in the way that the VBScript eng...",
"affected_vendor": "Microsoft",
"affected_product": "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_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 7.5,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}