CVE-2021-22565: Github.com/google/exposure notifications verification server Insufficient Granularity Of Access Control Vulnerability
MODERATECVE-2021-22565 is a MODERATE (CVSS 6.5) insufficient granularity of access control vulnerability (CWE-284: Improper Access Control) affecting Github.com/google/exposure notifications verification server libraries in the Go ecosystem. The issue involves insufficient granularity of access control in github.com/google/exposure-notifications-verification-server. Remediation is available by upgrading affected packages to version 1.1.2.
CVE-2021-22565 at a Glance
Security Impact
CVSS: 6.5
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:N/I:L/A:L).
How to Fix CVE-2021-22565
To remediate this vulnerability, upgrade all affected Github.com/google/exposure notifications verification server 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/google/exposure-notifications-verification-server to 1.1.2Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/google/exposure-notifications-verification-serverHow to Check if You Are Affected
To determine whether your application is affected by CVE-2021-22565, inspect your project dependencies for Github.com/google/exposure notifications verification server:
inspect dependencies for github.com/google/exposure-notifications-verification-serverAnalyze the terminal output to locate any version of Github.com/google/exposure notifications verification server in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.1.2), 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-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In Github.com/google/exposure notifications verification server, 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-2021-22565 Affected Github.com/google/exposure notifications verification server Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/google/exposure-notifications-verification-server
|
Go |
< 1.1.2
|
1.1.2
|
References
Frequently Asked Questions
What is CVE-2021-22565?
Which Github.com/google/exposure notifications verification server versions are affected?
What version fixes CVE-2021-22565?
Is github.com/google/exposure-notifications-verification-server affected?
What is the CVSS score of CVE-2021-22565?
What CWE is associated with CVE-2021-22565?
How can I check Go dependencies for CVE-2021-22565?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-wx8q-rgfr-cf6v",
"modified" : "2021-12-10T18:30:24Z",
"published" : "2021-11-10T18:20:11Z",
"aliases" : [ "CVE-2021-22565" ],
"summary" : "Insufficient Granularity of Access Control in github.com/google/exposure-notifications-verification-server",
"details" : "### Impact\nUsers or API keys with permission to expire verification codes could have expired codes that belonged to another realm if they guessed the UUID.\n\n### Patches\nv1.1.2+\n\n### Workarounds\nThere are no workarounds, and there are no indications this has been exploited in the wild. Verification codes can only be expired by providing their 64-bit UUID, and verification codes are already valid for a very short period of time (thus the UUID rotates frequently).\n\n### For more information\nContact exposure-notifications-feedback@google.com",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/google/exposure-notifications-verification-server"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "1.1.2"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/google/exposure-notifications-verification-server/security/advisories/GHSA-wx8q-rgfr-cf6v"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-22565"
}, {
"type" : "WEB",
"url" : "https://github.com/google/exposure-notifications-verification-server"
}, {
"type" : "WEB",
"url" : "https://github.com/google/exposure-notifications-verification-server/releases/tag/v1.1.2"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-284" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2021-11-09T21:03:07Z",
"nvd_published_at" : "2021-12-09T13:15:00Z"
}
}