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CVE-2022-3320— Bypassing Cloudflare Zero Trust policies using warp-cli set-custom-endpoint command

Quick assessment

Affected
Cloudflare WARP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cloudflare WARP（Cloudflare Vpn）是美国Cloudflare公司的一个用于安全连接的客户端应用软件。 Cloudflare WARP Zero Trust Secure Web Gateway存在安全漏洞，该漏洞源于攻击者可以通过使用warp-cli set-custom-endpoint 子命令绕过其配置策略使攻击者实现WARP客户机断开连接，并允许绕过Zero Trust注册端点上的管理限制。

CVSS 6.7 · Medium EPSS 0.40% · P32

Possible ATT&CK Techniques 2 AI

T1071.001 · Web Protocols T1562.001
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I. Basic Information for CVE-2022-3320

Vulnerability Information
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Vulnerability Title
Bypassing Cloudflare Zero Trust policies using warp-cli set-custom-endpoint command
Source: CVE Program / CVE List V5
Vulnerability Description
It was possible to bypass policies configured for Zero Trust Secure Web Gateway by using warp-cli 'set-custom-endpoint' subcommand. Using this command with an unreachable endpoint caused the WARP Client to disconnect and allowed bypassing administrative restrictions on a Zero Trust enrolled endpoint.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Cloudflare WARP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cloudflare WARP（Cloudflare Vpn）是美国Cloudflare公司的一个用于安全连接的客户端应用软件。 Cloudflare WARP Zero Trust Secure Web Gateway存在安全漏洞，该漏洞源于攻击者可以通过使用warp-cli set-custom-endpoint 子命令绕过其配置策略使攻击者实现WARP客户机断开连接，并允许绕过Zero Trust注册端点上的管理限制。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cloudflare WARP 0 ~ 2022.8.857.0 -
Cloudflare WARP 0 ~ 2022.8.936 -
Cloudflare WARP 0 ~ 2022.8.861.0 -

II. Public POCs for CVE-2022-3320

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III. Intelligence Information for CVE-2022-3320

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Vendor Advisories for CVE-2022-3320 (1)

Same Patch Batch · Cloudflare · 2022-10-28 · 6 CVEs total

CVE-2022-3321 6.7 MEDIUM Lock WARP switch feature bypass on WARP mobile client for iOS
CVE-2022-3322 6.7 MEDIUM Lock WARP switch bypass on WARP mobile client using iOS quick action
CVE-2022-3337 6.7 MEDIUM Lock WARP switch bypass by removing VPN profile on iOS mobile client
CVE-2022-3512 6.7 MEDIUM Lock WARP switch bypass using warp-cli 'add-trusted-ssid' command
CVE-2022-3616 5.4 MEDIUM OctoRPKI crash when maximum iterations number is reached

IV. Related Vulnerabilities

Same product: WARP
Same vendor: Cloudflare
Same weakness: CWE-862

V. Comments for CVE-2022-3320

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