CVE-2020-0638
published 2020-01-14CVE-2020-0638: An elevation of privilege vulnerability exists in the way the Update Notification Manager handles files.To exploit this vulnerability, an attacker would first…
PriorityP185high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
KEVITWRansomware
CISA Known Exploited Vulnerabilitydue 2022-06-13
Exploited in the wild
EPSS
2.37%
83.7th percentile
An elevation of privilege vulnerability exists in the way the Update Notification Manager handles files.To exploit this vulnerability, an attacker would first have to gain execution on the victim system, aka 'Update Notification Manager Elevation of Privilege Vulnerability'.
Affected
37 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows | — | — |
| microsoft | windows | — | — |
| microsoft | windows | — | — |
| microsoft | windows | — | — |
| microsoft | windows | — | — |
| microsoft | windows | — | — |
| microsoft | windows | — | — |
| microsoft | windows | — | — |
| microsoft | windows | — | — |
| microsoft | windows_10_version_1903_for_32-bit_systems | — | — |
| microsoft | windows_10_version_1903_for_arm64-based_systems | — | — |
| microsoft | windows_10_version_1903_for_x64-based_systems | — | — |
| microsoft | windows_10_version_1909_for_32-bit_systems | — | — |
| microsoft | windows_10_version_1909_for_arm64-based_systems | — | — |
| microsoft | windows_10_version_1909_for_x64-based_systems | — | — |
| microsoft | windows_server | — | — |
| microsoft | windows_server | — | — |
| microsoft | windows_server | — | — |
| msrc | windows_10_version_1709_for_32-bit_systems | — | — |
| msrc | windows_10_version_1709_for_arm64-based_systems | — | — |
| msrc | windows_10_version_1709_for_x64-based_systems | — | — |
| msrc | windows_10_version_1803_for_32-bit_systems | — | — |
| msrc | windows_10_version_1803_for_arm64-based_systems | — | — |
| msrc | windows_10_version_1803_for_x64-based_systems | — | — |
| msrc | windows_10_version_1809_for_32-bit_systems | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- →Exploitation requires an attacker to first gain code execution on the victim system, then run a specially crafted application to elevate privileges via the Update Notification Manager's file handling. ↗
- →The vulnerability is in the Windows Update Stack component (Update Notification Manager). Monitor for unexpected child processes or privilege escalation events originating from Update Notification Manager binaries. ↗
- ·As of the advisory, this vulnerability had NOT been publicly exploited or disclosed, reducing immediate in-the-wild detection urgency. However, it has since been added to the CISA KEV catalog, indicating confirmed exploitation. ↗
- ·The vulnerability is described as 'unspecified' in terms of exact mechanism — no file paths, registry keys, or specific API abuse details are publicly documented in these sources, limiting precise IOC creation. ↗
- ·CISA mandated remediation by 2022-06-13 per vendor instructions (KB4534276, KB4534293, KB4534273, KB4528760). Unpatched systems remain at risk. ↗
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.04.6MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P
vulncheck7.8HIGH
cisa7.8HIGH
vendor_msrc7.8HIGH
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CISA
Microsoft Update Notification Manager Privilege Escalation Vulnerability
cisa·2022-05-23·CVSS 7.8
CVE-2020-0638 [HIGH] Microsoft Update Notification Manager Privilege Escalation Vulnerability
Vulnerability: Microsoft Update Notification Manager Privilege Escalation Vulnerability
Affected: Microsoft Update Notification Manager
Microsoft Update Notification Manager contains an unspecified vulnerability that allows for privilege escalation.
Required Action: Apply updates per vendor instructions.
Notes: https://nvd.nist.gov/vuln/detail/CVE-2020-0638
Remediation Due Date: 2022-06-13
Microsoft
Update Notification Manager Elevation of Privilege Vulnerability
vendor_msrc·2020-01-14·CVSS 7.8
CVE-2020-0638 [HIGH] Update Notification Manager Elevation of Privilege Vulnerability
Update Notification Manager Elevation of Privilege Vulnerability
Description: An elevation of privilege vulnerability exists in the way the Update Notification Manager handles files.
To exploit this vulnerability, an attacker would first have to gain execution on the victim system. An attacker could then run a specially crafted application to elevate privileges.
The security update addresses the vulnerability by correcting how the Update Notification Manager handles files.
Windows Update Stack: Windows Update Stack
Impact: Elevation of Privilege
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4534276
Reference: htt
GHSA
GHSA-53p9-m4mr-wp8x: An elevation of privilege vulnerability exists in the way the Update Notification Manager handles files
ghsa_unreviewed·2022-05-24
CVE-2020-0638 [MEDIUM] CWE-269 GHSA-53p9-m4mr-wp8x: An elevation of privilege vulnerability exists in the way the Update Notification Manager handles files
An elevation of privilege vulnerability exists in the way the Update Notification Manager handles files.To exploit this vulnerability, an attacker would first have to gain execution on the victim system, aka 'Update Notification Manager Elevation of Privilege Vulnerability'.
VulnCheck
Microsoft Update Notification Manager Privilege Escalation Vulnerability
vulncheck·2020·CVSS 7.8
CVE-2020-0638 [HIGH] Microsoft Update Notification Manager Privilege Escalation Vulnerability
Microsoft Update Notification Manager Privilege Escalation Vulnerability
Microsoft Update Notification Manager contains an unspecified vulnerability that allows for privilege escalation.
Affected: Microsoft Update Notification Manager
Required Action: Apply updates per vendor instructions.
Known Ransomware Campaign Use: Known
Exploitation References: https://www.tenable.com/blog/contileaks-chats-reveal-over-30-vulnerabilities-used-by-conti-ransomware-affiliates; https://cybersecurityworks.com/howdymanage/uploads/file/RansomwareUpdate%20Report%202022%20Q1.pdf; https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json; https://www.securin.io/articles/all-about-conti-ransomware/; https://info.securin.io/hubfs/Securin%20Ransomware%20Report%202023.pdf
Remediation
No detection rules found.
No public exploits indexed.
Tenable
ContiLeaks: Chats Reveal Over 30 Vulnerabilities Used by Conti Ransomware – How Tenable Can Help
blogs_tenable·2022-03-24
ContiLeaks: Chats Reveal Over 30 Vulnerabilities Used by Conti Ransomware – How Tenable Can Help
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Talos
Microsoft Patch Tuesday — Jan. 2020: Vulnerability disclosures and Snort coverage
blogs_talos·2020-01-14·CVSS 8.1
CVE-2020-0601 [HIGH] Microsoft Patch Tuesday — Jan. 2020: Vulnerability disclosures and Snort coverage
## Microsoft Patch Tuesday — Jan. 2020: Vulnerability disclosures and Snort coverage
By Jon Munshaw. Updated January 15th: Added an Advanced Custom Detection (ACD) signature for AMP that can be used to detect exploitation of CVE-2020-0601 by spoofing certificates masquerading as a Microsoft ECC Code Signing Certificate Authority.
Microsoft released its monthly security update today, disclosing vulnerabilities across many of its products and releasing corresponding updates. This month's Patch Tuesday covers 49 vulnerabilities, eight of which are considered critical.
This month's security update is particularly important for its disclosure of two vulnerabilities related to a core cryptographic component in all versions of Windows. CVE-2020-0601 could allow an attacker to use cryptography
Talos
Microsoft Patch Tuesday — Jan. 2020: Vulnerability disclosures and Snort coverage
blogs_talos·2020-01-14·CVSS 8.1
CVE-2020-0601 [HIGH] Microsoft Patch Tuesday — Jan. 2020: Vulnerability disclosures and Snort coverage
By Jon Munshaw.
Updated January 15th: Added an Advanced Custom Detection (ACD) signature for AMP that can be used to detect exploitation of CVE-2020-0601 by spoofing certificates masquerading as a Microsoft ECC Code Signing Certificate Authority.
Microsoft released its monthly security update today, disclosing vulnerabilities across many of its products and releasing corresponding updates. This month's Patch Tuesday covers 49 vulnerabilities, eight of which are considered critical.
This month's security update is particularly important for its disclosure of two vulnerabilities related to a core cryptographic component in all versions of Windows. CVE-2020-0601 could allow an attacker to use cryptography to sign a malicious executable, making the file appear as if it was from a trusted sou
2020-01-14
Published
2022-05-23
Added to CISA KEV
Exploited in the wild