CVE-2021-37219: Github.com/hashicorp/consul HashiCorp Consul Privilege Escalation Vulnerability Vulnerability
HIGHCVE-2021-37219 is a HIGH (CVSS 8.8) hashicorp consul privilege escalation vulnerability vulnerability (CWE-295: Improper Certificate Validation) affecting Github.com/hashicorp/consul libraries in the Go ecosystem. The issue involves hashicorp consul privilege escalation vulnerability. Remediation is available by upgrading affected packages to version 1.10.2, 1.9.9, 1.8.15.
CVE-2021-37219 at a Glance
Security Impact
CVSS: 8.8
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
How to Fix CVE-2021-37219
To remediate this vulnerability, upgrade all affected Github.com/hashicorp/consul dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade github.com/hashicorp/consul to 1.10.2Upgrade github.com/hashicorp/consul to 1.9.9Upgrade github.com/hashicorp/consul to 1.8.15Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/hashicorp/consulHow to Check if You Are Affected
To determine whether your application is affected by CVE-2021-37219, inspect your project dependencies for Github.com/hashicorp/consul:
inspect dependencies for github.com/hashicorp/consulAnalyze the terminal output to locate any version of Github.com/hashicorp/consul in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.10.2), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-295: Improper Certificate Validation, where the product does not validate, or incorrectly validates, a certificate. In Github.com/hashicorp/consul, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2021-37219 Affected Github.com/hashicorp/consul Versions
3 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/hashicorp/consul
|
Go |
≥ 1.10.1
< 1.10.2
All 1 versions
1.10.1
|
1.10.2
|
|
github.com/hashicorp/consul
|
Go |
≥ 1.9.0
< 1.9.9
|
1.9.9
|
|
github.com/hashicorp/consul
|
Go |
< 1.8.15
|
1.8.15
|
References
Frequently Asked Questions
What is CVE-2021-37219?
Which Github.com/hashicorp/consul versions are affected?
What version fixes CVE-2021-37219?
Is github.com/hashicorp/consul affected?
What is the CVSS score of CVE-2021-37219?
What CWE is associated with CVE-2021-37219?
How can I check Go dependencies for CVE-2021-37219?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-ccw8-7688-vqx4",
"modified" : "2022-08-10T23:49:51Z",
"published" : "2021-09-08T20:14:48Z",
"aliases" : [ "CVE-2021-37219" ],
"summary" : "HashiCorp Consul Privilege Escalation Vulnerability",
"details" : "HashiCorp Consul and Consul Enterprise 1.10.1 Raft RPC layer allows non-server agents with a valid certificate signed by the same CA to access server-only functionality, enabling privilege escalation. Fixed in 1.8.15, 1.9.9 and 1.10.2.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/hashicorp/consul"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.10.1"
}, {
"fixed" : "1.10.2"
} ]
} ],
"versions" : [ "1.10.1" ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/hashicorp/consul"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.9.0"
}, {
"fixed" : "1.9.9"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/hashicorp/consul"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "1.8.15"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-37219"
}, {
"type" : "WEB",
"url" : "https://github.com/hashicorp/consul/pull/10925"
}, {
"type" : "WEB",
"url" : "https://github.com/hashicorp/consul/commit/3357e57dac9aadabd476f7a14973e47f003c4cf0"
}, {
"type" : "WEB",
"url" : "https://github.com/hashicorp/consul/commit/473edd1764b6739e2e4610ea5dede4c2bc6009d1"
}, {
"type" : "WEB",
"url" : "https://github.com/hashicorp/consul/commit/ccf8eb1947357434eb6e66303ddab79f4c9d4103"
}, {
"type" : "WEB",
"url" : "https://discuss.hashicorp.com/t/hcsec-2021-22-consul-raft-rpc-privilege-escalation/29024"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/hashicorp/consul"
}, {
"type" : "WEB",
"url" : "https://security.gentoo.org/glsa/202207-01"
}, {
"type" : "WEB",
"url" : "https://www.hashicorp.com/blog/category/consul"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-295" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2021-09-08T18:12:59Z",
"nvd_published_at" : "2021-09-07T12:15:00Z"
}
}