CVE-2023-1862
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.75%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.3 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- EPSS
- 0.75% probability · 53th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-284
- Affected
- cloudflare/warp
- Source
- cna@cloudflare.com
References
- https://developers.cloudflare.com/warp-client/get-started/windows/Product
- https://github.com/cloudflare/advisories/security/advisories/GHSA-q55r-53c8-5642Vendor Advisory
- https://install.appcenter.ms/orgs/cloudflare/apps/1.1.1.1-windows-1/distribution_groups/releaseRelease Notes
- https://developers.cloudflare.com/warp-client/get-started/windows/Product
- https://github.com/cloudflare/advisories/security/advisories/GHSA-q55r-53c8-5642Vendor Advisory
- https://install.appcenter.ms/orgs/cloudflare/apps/1.1.1.1-windows-1/distribution_groups/releaseRelease Notes
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.