CVEvulnerability
CVE-2015-9235
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2018-05-29
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 9.8 CRITICAL — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-20, CWE-327
Description
In jsonwebtoken node module before 4.2.2 it is possible for an attacker to bypass verification when a token digitally signed with an asymmetric key (RS/ES family) of algorithms but instead the attacker send a token digitally signed with a symmetric algorithm (HS* family).
Affected configurations
• auth0 jsonwebtoken (< 4.2.2)
Related
References
- https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/ Broken Link, Vendor Advisory
- https://github.com/auth0/node-jsonwebtoken/commit/1bb584bc382295eeb7ee8c4452a673a77a68b687 Patch, Third Party Advisory
- https://nodesecurity.io/advisories/17 Third Party Advisory
- https://www.timmclean.net/2015/02/25/jwt-alg-none.html Exploit, Third Party Advisory
- https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/ Broken Link, Vendor Advisory
- https://github.com/auth0/node-jsonwebtoken/commit/1bb584bc382295eeb7ee8c4452a673a77a68b687 Patch, Third Party Advisory
- https://nodesecurity.io/advisories/17 Third Party Advisory
- https://www.timmclean.net/2015/02/25/jwt-alg-none.html Exploit, Third Party Advisory