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Elliptic Curve Key Disclosure in go-jose

Critical severity GitHub Reviewed Published Jun 23, 2021 to the GitHub Advisory Database • Updated Feb 16, 2023

Package

gomod github.com/square/go-jose (Go)

Affected versions

< 1.0.4

Patched versions

1.0.4
gomod gopkg.in/square/go-jose.v1 (Go)
< 1.0.4
1.0.4

Description

go-jose before 1.0.4 suffers from an invalid curve attack for the ECDH-ES algorithm. When deriving a shared key using ECDH-ES for an encrypted message, go-jose neglected to check that the received public key on a message is on the same curve as the static private key of the receiver, thus making it vulnerable to an invalid curve attack.

References

Reviewed May 20, 2021
Published to the GitHub Advisory Database Jun 23, 2021
Last updated Feb 16, 2023

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS score

0.174%
(55th percentile)

Weaknesses

CVE ID

CVE-2016-9121

GHSA ID

GHSA-86r9-39j9-99wp

Source code

No known source code
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