Improper input validation in HackerOne Jwt-Simple Node Module
CVE-2016-10555
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.049 (91.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.049 · newest: 0.049 · change: -0.000
Affected products
- HackerOne Jwt-Simple Node Module — versions <=0.3.0
- Jwt-Simple Project
Weakness classification (CWE)
Public proof-of-concept exploits
References
- nodesecurity.io/advisories/87 (Third Party Advisory)
- github.com/hokaccha/node-jwt-simple/pull/14 (Third Party Advisory, Issue Tracking)
- auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/ (Third Party Advisory, Broken Link)
- github.com/hokaccha/node-jwt-simple/pull/16 (Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2016-10555?
- CVE-2016-10555 is a medium-severity vulnerability in HackerOne Jwt-Simple Node Module, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2018-05-31.
- How severe is CVE-2016-10555?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2016-10555 known to be exploited?
- 27 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.