CSRF in Microsoft Windows
CVE-2022-41924
A vulnerability identified in the Tailscale Windows client allows a malicious website to reconfigure the Tailscale daemon `tailscaled`, which can then be used to remotely execute code. In the Tailscale Windows client, the local API was bound to a local TCP socket, and communicated with the Windows client GUI in cleartext with no Host header verification. This allowed an attacker-controlled website visited by the node to rebind DNS to an attacker-controlled DNS server, and then make local API requests in the client, including changing the coordination server to an attacker-controlled coordination server. An attacker-controlled coordination server can send malicious URL responses to the client, including pushing executables or installing an SMB share. These allow the attacker to remotely execute code on the node. All Windows clients prior to version v.1.32.3 are affected. If you are running Tailscale on Windows, upgrade to v1.32.3 or later to remediate the issue.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.018 (77.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.018 · change: +0.002
Affected products
- Microsoft Windows
- Tailscale — versions < 1.32.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- emily.id.au/tailscale (Technical Description, Exploit, Third Party Advisory)
- github.com/tailscale/tailscale/security/advisories/GHSA-vqp6-rc3h-83cp (Third Party Advisory)
- tailscale.com/security-bulletins/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2022-41924?
- CVE-2022-41924 is a critical-severity vulnerability in Microsoft Windows, classified under Origin Validation Error. CVSS score: 9.6/10. Published 2022-11-23.
- How severe is CVE-2022-41924?
- Critical severity. CVSS v3 base score is 9.6 out of 10.
- Is CVE-2022-41924 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.