Vulnerability CVE-2017-12974
Published: 2017-08-20

Description:
Nimbus JOSE+JWT before 4.36 proceeds with ECKey construction without ensuring that the public x and y coordinates are on the specified curve, which allows attackers to conduct an Invalid Curve Attack in environments where the JCE provider lacks the applicable curve validation.

Type:

CWE-347

 (Improper Verification of Cryptographic Signature)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Connect2id -> Nimbus jose+jwt 

 References:
https://bitbucket.org/connect2id/nimbus-jose-jwt/commits/f3a7a801f0c6b078899fed9226368eb7b44e2b2f
https://bitbucket.org/connect2id/nimbus-jose-jwt/issues/217/explicit-check-for-ec-public-key-on-curve
https://bitbucket.org/connect2id/nimbus-jose-jwt/src/master/CHANGELOG.txt
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