Auth bypass in Auth0 Passport-Wsfed-Saml2
CVE-2022-23505
Passport-wsfed-saml2 is a ws-federation protocol and SAML2 tokens authentication provider for Passport. In versions prior to 4.6.3, a remote attacker may be able to bypass WSFed authentication on a website using passport-wsfed-saml2. A successful attack requires that the attacker is in possession of an arbitrary IDP signed assertion. Depending on the IDP used, fully unauthenticated attacks (e.g without access to a valid user) might also be feasible if generation of a signed message can be triggered. This issue is patched in version 4.6.3. Use of SAML2 authentication instead of WSFed is a workaround.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.008 (53.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000
Affected products
- Auth0 Passport-Wsfed-Saml2 — versions < 4.6.3
Weakness classification (CWE)
References
- github.com/auth0/passport-wsfed-saml2/security/advisories/GHSA-ppjq-qxhx-m25f (Third Party Advisory)
Frequently asked questions
- What is CVE-2022-23505?
- CVE-2022-23505 is a medium-severity vulnerability in Auth0 Passport-Wsfed-Saml2, classified under Improper Authentication. CVSS score: 5.3/10. Published 2022-12-13.
- How severe is CVE-2022-23505?
- Medium severity. CVSS v3 base score is 5.3 out of 10.