CVE-2020-1020
Confirmed PUBLISHEDA remote code execution vulnerability exists in Microsoft Windows when the Windows Adobe Type Manager Library improperly handles a...
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 Microsoft Windows when the Windows Adobe Type Manager Library improperly handles a specially-crafted multi-master font - Adobe Type 1 PostScript format.For all systems except Windows 10, an attacker who successfully exploited the vulnerability could execute code remotely, aka 'Adobe Font Manager Library Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-0938.
- CVE Published
- Apr 15, 2020
- Exploitation Reported
- Nov 03, 2021
- CVSS
- 8.8 High
- EPSS
- —
Affected Versions
43 version rows · page 2 of 2
| Vendor | Product | Version | Status |
|---|---|---|---|
| Microsoft |
Windows Server
|
2008 for Itanium-Based Systems Service Pack 2 |
Affected |
| Microsoft |
Windows Server
|
2008 for x64-based Systems Service Pack 2 |
Affected |
| Microsoft |
Windows Server
|
2008 for x64-based Systems Service Pack 2 (Core installation) |
Affected |
| Microsoft |
Windows Server
|
2008 R2 for Itanium-Based Systems Service Pack 1 |
Affected |
| Microsoft |
Windows Server
|
2008 R2 for x64-based Systems Service Pack 1 |
Affected |
| Microsoft |
Windows Server
|
2008 R2 for x64-based Systems Service Pack 1 (Core installation) |
Affected |
| Microsoft |
Windows Server
|
2012 |
Affected |
| Microsoft |
Windows Server
|
2012 (Core installation) |
Affected |
| Microsoft |
Windows Server
|
2012 R2 |
Affected |
| Microsoft |
Windows Server
|
2012 R2 (Core installation) |
Affected |
| Microsoft |
Windows 10 Version 1909 for 32-bit Systems
|
unspecified |
Affected |
| Microsoft |
Windows 10 Version 1909 for x64-based Systems
|
unspecified |
Affected |
| Microsoft |
Windows 10 Version 1909 for ARM64-based Systems
|
unspecified |
Affected |
| Microsoft |
Windows Server, version 1909 (Server Core installation)
|
unspecified |
Affected |
| Microsoft |
Windows 10 Version 1903 for 32-bit Systems
|
unspecified |
Affected |
| Microsoft |
Windows 10 Version 1903 for x64-based Systems
|
unspecified |
Affected |
| Microsoft |
Windows 10 Version 1903 for ARM64-based Systems
|
unspecified |
Affected |
| Microsoft |
Windows Server, version 1903 (Server Core installation)
|
unspecified |
Affected |
CVE References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1020 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 | 2021-11-03 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:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AV:N/AC:M/Au:N/C:P/I:P/A:P
Exploitation Status
Exploited in the wild
Recorded 2021-11-03 00:00:00 UTC · CISA
Proof of concept available
Recorded 2021-06-10 06:23:59 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 2021-08-10 03:10:39 UTC · 11 stars
Windows Font Driver Type 1 VToHOrigin stack corruption
github · Created 2021-06-10 06:23:59 UTC · 1 stars
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
-
06:23 UTC about 5 years ago06:23 UTC · about 5 years ago
Public PoC available
Public proof-of-concept code published
-
15:13 UTC over 6 years ago15:13 UTC · over 6 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC over 6 years ago00:00 UTC · over 6 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-2020-1020
{
"cve_id": "CVE-2020-1020",
"title": "A remote code execution vulnerability exists in Microsoft Windows when the Wi...",
"affected_vendor": "Microsoft",
"affected_product": "Windows, Windows Server, Windows 10 Version 1909 for 32-bit Systems, Windows 10 Version 1909 for x64-based Systems, Windows 10 Version 1909 for ARM64-based Systems, Windows Server, version 1909 (Server Core installation), Windows 10 Version 1903 for 32-bit Systems, Windows 10 Version 1903 for x64-based Systems, Windows 10 Version 1903 for ARM64-based Systems, Windows Server, version 1903 (Server Core installation)",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 8.8,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}