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Vulnerability Details :

CVE-2023-1412

Summary
Assigner-cloudflare
Assigner Org ID-a22f1246-ba21-4bb4-a601-ad51614c1513
Published At-05 Apr, 2023 | 15:22
Updated At-10 Feb, 2025 | 18:02
Rejected At-
Credits

Local Privilege Escalation Vulnerability in WARP's MSI Installer

An unprivileged (non-admin) user can exploit an Improper Access Control vulnerability in the Cloudflare WARP Client for Windows (<= 2022.12.582.0) to perform privileged operations with SYSTEM context by working with a combination of opportunistic locks (oplock) and symbolic links (which can both be created by an unprivileged user). After installing the Cloudflare WARP Client (admin privileges required), an MSI-Installer is placed under C:\Windows\Installer. The vulnerability lies in the repair function of this MSI. ImpactAn unprivileged (non-admin) user can exploit this vulnerability to perform privileged operations with SYSTEM context, including deleting arbitrary files and reading arbitrary file content. This can lead to a variety of attacks, including the manipulation of system files and privilege escalation. PatchesA new installer with a fix that addresses this vulnerability was released in version 2023.3.381.0. While the WARP Client itself is not vulnerable (only the installer), users are encouraged to upgrade to the latest version and delete any older installers present in their systems.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:cloudflare
Assigner Org ID:a22f1246-ba21-4bb4-a601-ad51614c1513
Published At:05 Apr, 2023 | 15:22
Updated At:10 Feb, 2025 | 18:02
Rejected At:
▼CVE Numbering Authority (CNA)
Local Privilege Escalation Vulnerability in WARP's MSI Installer

An unprivileged (non-admin) user can exploit an Improper Access Control vulnerability in the Cloudflare WARP Client for Windows (<= 2022.12.582.0) to perform privileged operations with SYSTEM context by working with a combination of opportunistic locks (oplock) and symbolic links (which can both be created by an unprivileged user). After installing the Cloudflare WARP Client (admin privileges required), an MSI-Installer is placed under C:\Windows\Installer. The vulnerability lies in the repair function of this MSI. ImpactAn unprivileged (non-admin) user can exploit this vulnerability to perform privileged operations with SYSTEM context, including deleting arbitrary files and reading arbitrary file content. This can lead to a variety of attacks, including the manipulation of system files and privilege escalation. PatchesA new installer with a fix that addresses this vulnerability was released in version 2023.3.381.0. While the WARP Client itself is not vulnerable (only the installer), users are encouraged to upgrade to the latest version and delete any older installers present in their systems.

Affected Products
Vendor
Cloudflare, Inc.Cloudflare
Product
WARP
Package Name
WARP Installer
Platforms
  • Windows
Default Status
unaffected
Versions
Affected
  • From 0 through 2022.5.309.0 (N/A)
    • -> unaffectedfrom2023.3.381.0
Problem Types
TypeCWE IDDescription
CWECWE-59CWE-59 Improper Link Resolution Before File Access ('Link Following')
Type: CWE
CWE ID: CWE-59
Description: CWE-59 Improper Link Resolution Before File Access ('Link Following')
Metrics
VersionBase scoreBase severityVector
3.17.0HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 7.0
Base severity: HIGH
Vector:
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-233CAPEC-233 Privilege Escalation
CAPEC ID: CAPEC-233
Description: CAPEC-233 Privilege Escalation
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/cloudflare/advisories/security/advisories/GHSA-hgxh-48m3-3gq7
N/A
https://install.appcenter.ms/orgs/cloudflare/apps/1.1.1.1-windows-1/distribution_groups/release
N/A
https://developers.cloudflare.com/warp-client/get-started/windows/
N/A
Hyperlink: https://github.com/cloudflare/advisories/security/advisories/GHSA-hgxh-48m3-3gq7
Resource: N/A
Hyperlink: https://install.appcenter.ms/orgs/cloudflare/apps/1.1.1.1-windows-1/distribution_groups/release
Resource: N/A
Hyperlink: https://developers.cloudflare.com/warp-client/get-started/windows/
Resource: N/A
▼Authorized Data Publishers (ADP)
1. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/cloudflare/advisories/security/advisories/GHSA-hgxh-48m3-3gq7
x_transferred
https://install.appcenter.ms/orgs/cloudflare/apps/1.1.1.1-windows-1/distribution_groups/release
x_transferred
https://developers.cloudflare.com/warp-client/get-started/windows/
x_transferred
Hyperlink: https://github.com/cloudflare/advisories/security/advisories/GHSA-hgxh-48m3-3gq7
Resource:
x_transferred
Hyperlink: https://install.appcenter.ms/orgs/cloudflare/apps/1.1.1.1-windows-1/distribution_groups/release
Resource:
x_transferred
Hyperlink: https://developers.cloudflare.com/warp-client/get-started/windows/
Resource:
x_transferred
2. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cna@cloudflare.com
Published At:05 Apr, 2023 | 16:15
Updated At:07 Nov, 2023 | 04:03

An unprivileged (non-admin) user can exploit an Improper Access Control vulnerability in the Cloudflare WARP Client for Windows (<= 2022.12.582.0) to perform privileged operations with SYSTEM context by working with a combination of opportunistic locks (oplock) and symbolic links (which can both be created by an unprivileged user). After installing the Cloudflare WARP Client (admin privileges required), an MSI-Installer is placed under C:\Windows\Installer. The vulnerability lies in the repair function of this MSI. ImpactAn unprivileged (non-admin) user can exploit this vulnerability to perform privileged operations with SYSTEM context, including deleting arbitrary files and reading arbitrary file content. This can lead to a variety of attacks, including the manipulation of system files and privilege escalation. PatchesA new installer with a fix that addresses this vulnerability was released in version 2023.3.381.0. While the WARP Client itself is not vulnerable (only the installer), users are encouraged to upgrade to the latest version and delete any older installers present in their systems.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.17.8HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Secondary3.17.0HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Type: Primary
Version: 3.1
Base score: 7.8
Base severity: HIGH
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 7.0
Base severity: HIGH
Vector:
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CPE Matches
Cloudflare, Inc.
cloudflare
>>warp>>Versions before 2023.3.381.0(exclusive)
cpe:2.3:a:cloudflare:warp:*:*:*:*:*:windows:*:*
Weaknesses
CWE IDTypeSource
CWE-59Primarynvd@nist.gov
CWE-59Secondarycna@cloudflare.com
CWE ID: CWE-59
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-59
Type: Secondary
Source: cna@cloudflare.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://developers.cloudflare.com/warp-client/get-started/windows/cna@cloudflare.com
Product
https://github.com/cloudflare/advisories/security/advisories/GHSA-hgxh-48m3-3gq7cna@cloudflare.com
Vendor Advisory
https://install.appcenter.ms/orgs/cloudflare/apps/1.1.1.1-windows-1/distribution_groups/releasecna@cloudflare.com
Release Notes
Hyperlink: https://developers.cloudflare.com/warp-client/get-started/windows/
Source: cna@cloudflare.com
Resource:
Product
Hyperlink: https://github.com/cloudflare/advisories/security/advisories/GHSA-hgxh-48m3-3gq7
Source: cna@cloudflare.com
Resource:
Vendor Advisory
Hyperlink: https://install.appcenter.ms/orgs/cloudflare/apps/1.1.1.1-windows-1/distribution_groups/release
Source: cna@cloudflare.com
Resource:
Release Notes

Change History

0
Information is not available yet

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