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Security Advisories: GSA_kwCzR0hTQS1ydzU0LTY4MjYtYzhqNc4AA34O

yiisoft/yii2-authclient's Oauth2 PKCE implementation is vulnerable

Impact

What kind of vulnerability is it? Who is impacted?

Original Report:

The Oauth2 PKCE implementation is vulnerable in 2 ways:

  1. The authCodeVerifier should be removed after usage (similar to 'authState')
  2. There is a risk for a "downgrade attack" if PKCE is being relied on for CSRF protection.

Patches

Has the problem been patched? What versions should users upgrade to?

2.2.15

Workarounds

Is there a way for users to fix or remediate the vulnerability without upgrading?

not known yet.

References

Are there any links users can visit to find out more?

Permalink: https://github.com/advisories/GHSA-rw54-6826-c8j5
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1ydzU0LTY4MjYtYzhqNc4AA34O
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 5 months ago
Updated: 4 months ago


CVSS Score: 6.8
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Identifiers: GHSA-rw54-6826-c8j5, CVE-2023-50714
References: Repository: https://github.com/yiisoft/yii2-authclient
Blast Radius: 21.3

Affected Packages

packagist:yiisoft/yii2-authclient
Dependent packages: 194
Dependent repositories: 1,361
Downloads: 4,626,950 total
Affected Version Ranges: < 2.2.15
Fixed in: 2.2.15
All affected versions: 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.1.0, 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.1.5, 2.1.6, 2.1.7, 2.1.8, 2.2.0, 2.2.1, 2.2.2, 2.2.3, 2.2.4, 2.2.5, 2.2.6, 2.2.7, 2.2.8, 2.2.9, 2.2.10, 2.2.11, 2.2.12, 2.2.13, 2.2.14
All unaffected versions: 2.2.15