CVE-2021-32701: Github.com/ory/oathkeeper Incorrect Authorization Vulnerability
HIGHCVE-2021-32701 is a HIGH (CVSS 7.5) incorrect authorization vulnerability (CWE-863: Incorrect Authorization) affecting Github.com/ory/oathkeeper libraries in the Go ecosystem. The issue involves incorrect authorization in ory oathkeeper. Remediation is available by upgrading affected packages to version 0.38.12-beta.1.
CVE-2021-32701 at a Glance
Security Impact
CVSS: 7.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
How to Fix CVE-2021-32701
To remediate this vulnerability, upgrade all affected Github.com/ory/oathkeeper 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/ory/oathkeeper to 0.38.12-beta.1Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/ory/oathkeeperHow to Check if You Are Affected
To determine whether your application is affected by CVE-2021-32701, inspect your project dependencies for Github.com/ory/oathkeeper:
inspect dependencies for github.com/ory/oathkeeperAnalyze the terminal output to locate any version of Github.com/ory/oathkeeper in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.38.12-beta.1), 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-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Github.com/ory/oathkeeper, 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-2021-32701 Affected Github.com/ory/oathkeeper Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/ory/oathkeeper
|
Go |
≥ 0.38.0-beta.2
< 0.38.12-beta.1
|
0.38.12-beta.1
|
References
Frequently Asked Questions
What is CVE-2021-32701?
Which Github.com/ory/oathkeeper versions are affected?
What version fixes CVE-2021-32701?
Is github.com/ory/oathkeeper affected?
What is the CVSS score of CVE-2021-32701?
What CWE is associated with CVE-2021-32701?
How can I check Go dependencies for CVE-2021-32701?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-vfvf-6gx5-mqv6",
"modified" : "2021-06-23T20:38:29Z",
"published" : "2021-06-24T20:16:02Z",
"aliases" : [ "CVE-2021-32701" ],
"summary" : "Incorrect Authorization in ORY Oathkeeper",
"details" : "ORY Oathkeeper is an Identity & Access Proxy (IAP) and Access Control Decision API that authorizes HTTP requests based on sets of Access Rules. When you make a request to an endpoint that requires the scope `foo` using an access token granted with that `foo` scope, introspection will be valid and that token will be cached. The problem comes when a second requests to an endpoint that requires the scope `bar` is made before the cache has expired. Whether the token is granted or not to the `bar` scope, introspection will be valid. A patch will be released with `v0.38.12-beta.1`. Per default, caching is disabled for the `oauth2_introspection` authenticator. When caching is disabled, this vulnerability does not exist. The cache is checked in [`func (a *AuthenticatorOAuth2Introspection) Authenticate(...)`](https://github.com/ory/oathkeeper/blob/6a31df1c3779425e05db1c2a381166b087cb29a4/pipeline/authn/authenticator_oauth2_introspection.go#L152). From [`tokenFromCache()`](https://github.com/ory/oathkeeper/blob/6a31df1c3779425e05db1c2a381166b087cb29a4/pipeline/authn/authenticator_oauth2_introspection.go#L97) it seems that it only validates the token expiration date, but ignores whether the token has or not the proper scopes. The vulnerability was introduced in PR #424. During review, we failed to require appropriate test coverage by the submitter which is the primary reason that the vulnerability passed the review process.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/ory/oathkeeper"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0.38.0-beta.2"
}, {
"fixed" : "0.38.12-beta.1"
} ]
} ],
"database_specific" : {
"last_known_affected_version_range" : "<= 0.38.11-beta.1"
}
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/ory/oathkeeper/security/advisories/GHSA-qvp4-rpmr-xwrr"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-32701"
}, {
"type" : "WEB",
"url" : "https://github.com/ory/oathkeeper/pull/424"
}, {
"type" : "WEB",
"url" : "https://github.com/ory/oathkeeper/commit/1f9f625c1a49e134ae2299ee95b8cf158feec932"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-863" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2021-06-23T20:38:29Z",
"nvd_published_at" : "2021-06-22T20:15:00Z"
}
}