Cloudflare WARP Client up to 2022.12.582.0 on Windows C:\Windows\Installer link following

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Cloudflare WARP Client up to 2022.12.582.0 on Windows. Affected by this vulnerability is an unknown functionality of the file C:\Windows\Installer. The manipulation results in link following. This vulnerability is known as CVE-2023-1412. Attacking locally is a requirement. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Cloudflare WARP Client up to 2022.12.582.0 on Windows (Cloud Software). It has been classified as critical. Affected is an unknown part of the file C:\Windows\Installer. The manipulation with an unknown input leads to a link following vulnerability. CWE is classifying the issue as CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was published 04/06/2023 as GHSA-hgxh-48m3-3gq7. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2023-1412 since 03/15/2023. There are known technical details, but no exploit is available.

Upgrading to version 2023.3.381.0 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.0
CNA Vector (Cloudflare, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: WARP Client 2023.3.381.0

Timelineinfo

03/15/2023 🔍
04/06/2023 +21 days 🔍
04/06/2023 +0 days 🔍
04/23/2023 +17 days 🔍

Sourcesinfo

Advisory: GHSA-hgxh-48m3-3gq7
Status: Confirmed

CVE: CVE-2023-1412 (🔍)
GCVE (CVE): GCVE-0-2023-1412
GCVE (VulDB): GCVE-100-225060

Entryinfo

Created: 04/06/2023 10:10
Updated: 04/23/2023 09:08
Changes: 04/06/2023 10:10 (53), 04/23/2023 09:08 (11)
Complete: 🔍
Cache ID: 216::103

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