Package Instance

Denial of Service (DoS) in HashiCorp Consul
HashiCorp Consul and Consul Enterprise could crash when configured with an abnormally-formed service-router entry. Introduced in 1.6.0, fixed in 1.6.6 and 1.7.4.
### Specific Go Packages Affected
github.com/hashicorp/consul/agent/consul/discoverychain

HashiCorp Consul Incorrect Access Control vulnerability
HashiCorp Consul 1.4.0 through 1.5.0 has Incorrect Access Control. Keys not matching a specific ACL rule used for prefix matching in a policy can be deleted by a token using that policy even with default deny settings configured.

### Specific Go Packages Affected
github.com/hashicorp/consul/acl

Improper Input Validation in HashiCorp Consul
HashiCorp Consul and Consul Enterprise did not appropriately enforce scope for local tokens issued by a primary data center, where replication to a secondary data center was not enabled. Introduced in 1.4.0, fixed in 1.6.6 and 1.7.4.
### Specific Go Packages Affected
github.com/hashicorp/consul/agent

Denial of Service (DoS) in HashiCorp Consul
HashiCorp Consul and Consul Enterprise up to 1.6.2 HTTP/RPC services allowed unbounded resource usage, and were susceptible to unauthenticated denial of service. Fixed in 1.6.3.

### Specific Go Packages Affected
github.com/hashicorp/consul/agent/consul

Privilege Escalation in HashiCorp Consul
HashiCorp Consul and Consul Enterprise 1.2.0 up to 1.8.5 allowed operators with operator:read ACL permissions to read the Connect CA private key configuration. Fixed in 1.6.10, 1.7.10, and 1.8.6.

Allocation of Resources Without Limits or Throttling in Hashicorp Consul
HashiCorp Consul and Consul Enterprise include an HTTP API (introduced in 1.2.0) and DNS (introduced in 1.4.3) caching feature that was vulnerable to denial of service.

### Specific Go Packages Affected
github.com/hashicorp/consul/agent/config

### Fix
The vulnerability is fixed in versions 1.6.6 and 1.7.4.

Denial of service in HashiCorp Consul
HashiCorp Consul Enterprise versions 1.7.0 up to 1.7.8 and 1.8.0 up to 1.8.4 includes a namespace replication bug which can be triggered to cause denial of service via infinite Raft writes. Fixed in 1.7.9 and 1.8.5.

HashiCorp Consul can use cleartext agent-to-agent RPC communication
HashiCorp Consul 0.5.1 through 1.4.0 can use cleartext agent-to-agent RPC communication because the `verify_outgoing` setting is improperly documented. NOTE: the vendor has provided reconfiguration steps that do not require a software upgrade.

Incorrect Permission Assignment for Critical Resource	in Hashicorp Consul
HashiCorp Consul and Consul Enterprise failed to enforce changes to legacy ACL token rules due to non-propagation to secondary data centers. Introduced in 1.4.0, fixed in 1.6.6 and 1.7.4.
### Specific Go Packages Affected
github.com/hashicorp/consul/agent/structs

Incorrect Authorization in HashiCorp Consul
HashiCorp Consul and Consul Enterprise 1.4.1 through 1.6.2 did not uniformly enforce ACLs across all API endpoints, resulting in potential unintended information disclosure. Fixed in 1.6.3.