6.5med
CVE-2016-10555
Forgeable Public/Private Tokens in jwt-simple
Also known as GHSA-vgrx-w6rg-8fqf
Published 8 y ago · modified 4 mo ago · JSON
CVSS
6.5
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
4.8%
percentile 92%
Public exploits
0
none known
Summary
Since "algorithm" isn't enforced in jwt.decode()in jwt-simple 0.3.0 and earlier, a malicious user could choose what algorithm is sent sent to the server. If the server is expecting RSA but is sent HMAC-SHA with RSA's public key, the server will think the public key is actually an HMAC private key. This could be used to forge any data an attacker wants.
Exploit prediction (EPSS)
4.82% probability of exploitation in the next 30 days, higher than 92% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| NVD | 3.0 | 6.5 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:P/A:N |
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | jwt-simple | <0.3.1 | 0.3.1 |
Affected products
- HackerOne jwt-simple node module
Classification
References
- nodesecurity.io /advisories/87 · x_refsource_MISC, x_transferred
- github.com /hokaccha/node-jwt-simple/pull/14 · x_refsource_MISC, x_transferred
- auth0.com /blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/ · x_refsource_MISC, x_transferred
- github.com /hokaccha/node-jwt-simple/pull/16 · x_refsource_MISC, x_transferred
- nvd.nist.gov /vuln/detail/CVE-2016-10555 · advisory
- github.com /hokaccha/node-jwt-simple/commit/957957cfa44474049b4603b293569588ee9ffd97 · web
- auth0.com /blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries · web
- npmjs.com /advisories/87 · web
Sources
- CVE List: CVE-2016-10555
- GitHub Advisory: GHSA-vgrx-w6rg-8fqf
- NVD: CVE-2016-10555
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