CyberRota Analysis
AI-GeneratedA vulnerability exists in etcd versions prior to 3.5.33, 3.6.14, and 3.7.1, allowing users with READ permission on a specific key to access watch events for all keys lexicographically greater than or equal to that key when using the Watch gRPC API. This flaw arises from improper handling of permissions, potentially exposing sensitive data in clusters with authentication enabled. Organizations utilizing etcd for distributed systems should prioritize updating to the patched versions to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.5.33, 3.6.14, and 3.7.1, a user granted READ permission on a single exact key can use the Watch gRPC API with clientv3.WithFromKey() to receive watch events for every key lexicographically greater than or equal to the permitted key. In server/etcdserver/api/v3rpc/watch.go, the open-ended RangeEnd sentinel is rewritten before the RBAC permission check in server/auth/range_perm_cache.go function isRangeOpPermitted, causing the request to be treated as an exact-key watch. Range/Get and DeleteRange requests are not affected, and the issue affects only clusters with authentication enabled. This issue is fixed in versions 3.5.33, 3.6.14, and 3.7.1.