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.

Affected products

Jwt-Simple

Jwt-simple Project Jwt-simple

≤ 0.3.0

Fix

Available

CVSS 3.0

6.5 MEDIUM

EPSS

4.9% (91th percentile)

Weakness

CWE-310, CWE-20

NVD status

Modified

Published

2018-05-31