CVE-2020-26254: Omniauth apple Omniauth-apple Allows Attacker To Fake Vulnerability
HIGHCVE-2020-26254 is a HIGH (CVSS 7.7) omniauth-apple allows attacker to fake vulnerability (CWE-290: Authentication Bypass by Spoofing) affecting Omniauth apple libraries in the RubyGems ecosystem. The issue involves omniauth-apple allows attacker to fake their email address during authentication. Remediation is available by upgrading affected packages to version 1.0.1.
CVE-2020-26254 at a Glance
Security Impact
CVSS: 7.7
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:C/C:N/I:H/A:N).
How to Fix CVE-2020-26254
To remediate this vulnerability, upgrade all affected Omniauth apple 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 omniauth-apple to 1.0.1Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for omniauth-appleHow to Check if You Are Affected
To determine whether your application is affected by CVE-2020-26254, inspect your project dependencies for Omniauth apple:
inspect dependencies for omniauth-appleAnalyze the terminal output to locate any version of Omniauth apple in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.1), 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-290: Authentication Bypass by Spoofing, where this attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks. In Omniauth apple, 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-2020-26254 Affected Omniauth apple Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
omniauth-apple
|
RubyGems |
< 1.0.1
|
1.0.1
|
References
Frequently Asked Questions
What is CVE-2020-26254?
Which Omniauth apple versions are affected?
What version fixes CVE-2020-26254?
Is omniauth-apple affected?
What is the CVSS score of CVE-2020-26254?
What CWE is associated with CVE-2020-26254?
How can I check RubyGems dependencies for CVE-2020-26254?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-49r3-2549-3633",
"modified" : "2023-05-16T16:06:03Z",
"published" : "2020-12-08T14:18:19Z",
"aliases" : [ "CVE-2020-26254" ],
"summary" : "omniauth-apple allows attacker to fake their email address during authentication",
"details" : "### Impact\n\nThis vulnerability impacts applications using the [omniauth-apple](https://github.com/nhosoya/omniauth-apple) strategy of OmniAuth and using the `info.email` field of OmniAuth's [Auth Hash Schema](https://github.com/omniauth/omniauth/wiki/Auth-Hash-Schema) for any kind of identification. The value of this field may be set to any value of the attacker's choice including email addresses of other users.\n\nFor example, an application using omniauth-apple with the following code will be impacted:\n```ruby\ndef omniauth_callback\n auth_hash = request.env['omniauth.auth']\n @authenticated_user = User.find_by(email: auth_hash.info.email)\nend\n```\n\nApplications not using `info.email` for identification but are instead using the `uid` field are not impacted in the same manner. Note, these applications may still be negatively affected if the value of `info.email` is being used for other purposes.\n\n### Patches\n\nApplications using affected versions of omniauth-apple are advised to upgrade to omniauth-apple version 1.0.1 or later.\n\n### Workarounds\n\nIf unable to upgrade to a patched version, monkey patching `OmniAuth::Strategies::Apple#email` as follows is advised as a workaround:\n\n```ruby\nmodule OmniAuth\n module Strategies\n class Apple\n def email\n id_info['email']\n end\n end\n end\nend\n```",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "RubyGems",
"name" : "omniauth-apple"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "1.0.1"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/nhosoya/omniauth-apple/security/advisories/GHSA-49r3-2549-3633"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-26254"
}, {
"type" : "WEB",
"url" : "https://github.com/nhosoya/omniauth-apple/commit/b37d5409213adae2ca06a67fec14c8d3d07d9016"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/nhosoya/omniauth-apple"
}, {
"type" : "WEB",
"url" : "https://github.com/nhosoya/omniauth-apple/blob/master/CHANGELOG.md#101---2020-12-03"
}, {
"type" : "WEB",
"url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/omniauth-apple/CVE-2020-26254.yml"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-290" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2020-12-08T14:17:26Z",
"nvd_published_at" : "2020-12-08T15:15:11Z"
}
}