CVE-2023-1862 Remote access to warp-svc.exe in Cloudflare WARP
Remote attackers can access WARP service controls and configuration data via IPC pipes if network restrictions and authentication settings are permissive.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-1862?
CVE-2023-1862 is a high-severity missing authorization vulnerability in Cloudflare WARP Client, published on 20 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cloudflare WARP client for Windows (up to v2023.3.381.0) allowed a malicious actor to remotely access the warp-svc.exe binary due to an insufficient access control policy on an IPC Named Pipe. This would have enabled an attacker to trigger WARP connect and disconnect commands, as well as obtaining network diagnostics and application configuration from the target's device. It is important to note that in order to exploit this, a set of requirements would need to be met, such as the target's device must've been reachable on port 445, allowed authentication with NULL sessions or otherwise having knowledge of the target's credentials.
Weakness: CWE-284
Which versions are affected by CVE-2023-1862?
It affects 1 product.
Products include Cloudflare Warp.
How do I fix CVE-2023-1862?
No fix has been published for CVE-2023-1862 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2023-1862 being exploited?
There is no known exploitation of CVE-2023-1862 in the wild and no public exploit code.
Other vulnerabilities in Cloudflare WARP Client
- CVE-2022-4428 support_uri validation missing in WARP client for Windows
- CVE-2022-2225 Zero Trust Secure Web Gateway policies bypass using WARP client subcommands
- CVE-2023-2754 Plaintext transmission of DNS requests in Windows 1.1.1.1 WARP client
- CVE-2023-0652 Local Privilege Escalation in Cloudflare WARP Installer (Windows)
- CVE-2023-1412 Local Privilege Escalation Vulnerability in WARP's MSI Installer