CVE-2022-41925

 

Published at: - 23-11-2022 08:15

Last modified: - 23-11-2022 08:15

Total changes: - 1

Description

A vulnerability identified in the Tailscale client allows a malicious website to access the peer API, which can then be used to access Tailscale environment variables. In the Tailscale client, the peer API was vulnerable to DNS rebinding. This allowed an attacker-controlled website visited by the node to rebind DNS for the peer API to an attacker-controlled DNS server, and then making peer API requests in the client, including accessing the node’s Tailscale environment variables. An attacker with access to the peer API on a node could use that access to read the node’s environment variables, including any credentials or secrets stored in environment variables. This may include Tailscale authentication keys, which could then be used to add new nodes to the user’s tailnet. The peer API access could also be used to learn of other nodes in the tailnet or send files via Taildrop. All Tailscale clients prior to version v1.32.3 are affected. Upgrade to v1.32.3 or later to remediate the issue.

Common Vulnerability Scoring System (CVSS)

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Verification logic

 

Reference

• https://github.com/tailscale/tailscale/security/advisories/GHSA-qccm-wmcq-pwr6
• https://emily.id.au/tailscale
• https://tailscale.com/security-bulletins/#ts-2022-005

 

Keywords

NVD

 

CVE-2022-41925

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures